CN1246517C - Ion-sensitive water-dispersible polymers, method of making same and product using same - Google Patents

Abstract

The present invention is directed to ion-sensitive, water-dispersible polymers. The present invention is also directed to a method of making ion-sensitive, water-dispersible polymers and their applicability as binder compositions. The present invention is further directed to fiber-containing fabrics and webs comprising ion-sensitive, water-dispersible binder compositions and their applicability in water-dispersible personal care products.

Description

Ion-sensitive water-dispersible polymers, its manufacture method and use its goods

Technical field

The present invention relates to the ion-sensitive water-dispersible polymers formulation.The invention still further relates to the method and they purposes of making the ion-sensitive water-dispersible polymers formulation as the adhesive composition of disposable product.The invention further relates to the disposable product that contains the ion-sensitive water-dispersible adhesive composition, as hygenic towelette.

Background technology

For many years, the handling problem of disposable discarded object is being perplexed always can provide disposable product, as those industry of diaper, hygenic towelette, incontinence clothing and feminine care.Although on addressing this problem, obtained important advance,, one of weak link is to produce the cellulosic thin slice of the bonding of economy (fibrous web), it is dissolving or disintegration easily in water, but still has enough working strengths.Referring to, for example, U.K. patent disclosure specification 2,241,373 and USP4,186,233.Do not have this series products, if do not remove, the user is flushed to toilet with described product and comes the ability of the described product of waste treatment to reduce greatly.In addition, described product ability of disintegration in landfill is very limited, because if any, the major part in the biodegradable or photodegradable product component is by plastic encapsulation or by plastic bonding together, plastics are through just degraded for a long time.Therefore, if described plastics generation disintegration in the presence of water, because plastic encapsulation or breaking of bonding would be degraded intraware.

Disposable product can be discarded by dashing to abandon in the toilet as diaper, feminine care products and adult's urinary incontinence care product.Usually this based article contains bodyside liner, and it must pass through fluid fast, as urine or menses, so that described fluid is absorbed by the absorbent core of product.Typically, described bodyside liner can be the cellulosic thin slice of bonding, and it has numerous characteristics ideally, as softness and flexible.The cellulosic thin slice of bodyside liner is typically laid many general random fibers and is bonded them together the thin slice that forms bonding with adhesive composition by wet-laying or dry method (air) and forms.The adhesive composition in past has been brought into play this function well.Yet, the cellulosic thin slice that contains these compositions tend to be can not disperse and having problems in the health department at home typical.

The adhesive composition of developing recently, the adhesive composition than the past has more dispersibility, and has more the feature of environmental protection.A kind of polymeric material that in water, has retrograde solubility that contains in the adhesive composition.These adhesive compositions are insoluble in the warm water, but dissolve in cold water, as seeing in toilet.Well-known is that many polymer demonstrate cloud point or retrograde solubility character in water-bearing media.These polymer are used for various uses by narration in several publications, comprise that (1) is as evaporation delayed-action activator (JP 6207162); (2) as the responsive to temperature type composition, owing to can be used as temperature indicator (JP 6192527) with change color that relevant temperature changes relevant acumen, (3) as opaque under specified temp and be cooled to be lower than described specified temp after the thermo-sensitive material (JP51003248 and JP 81035703) of bleach; (4) as the wound dressing (JP 6233809) that has good absorption and remove easily; (5) as the material (USP5, on April 23rd, 509,913,1996 was issued to Richard S.Yeo, and transferred the possession of in Kimberly-Clarke company) that can dash in the personal care product that discards.

Other nearest adhesive of being considered comprises ion-sensitive type one class adhesive.Several pieces of US and the European patent that transfer Lion company (Tokyo) disclose the ion-sensitive type polymer that contains acrylic acid and acrylic acid alkyl or aryl ester.Referring to USP5,312,883,5,317,063 and 5,384,189, these disclosures are introduced into for reference, and European patent No.608460A1.At USP5, in 312,883, terpolymer is disclosed as dashing the proper adhesive of abandoning nonwoven sheet.The disclosed acrylic type terpolymer that contains acrylic acid, butyl acrylate and the 2-ethylhexyl acrylate of part neutralization is that some places are used for dashing the proper adhesive of abandoning nonwoven sheet in the whole world.Yet because the existence of a small amount of sodium acrylate in the terpolymer of part neutralization, these adhesives can't be dispersed in to contain and surpass about 15ppm Ca ²⁺And/or Mg ²⁺Water in.Surpass about 15ppm Ca when being placed into to contain ²⁺And/or Mg ²⁺In the time of in the water of ion, use the nonwoven sheet of above-mentioned adhesive will keep TENSILE STRENGTH greater than 30g/in, can the described thin slice of negative effect " dispersiveness ".The failure mechanism that is proposed is that each calcium ion is in molecule or intermolecularly combine two carboxylate radicals.Associate in the molecule and cause that described polymer chain twines, and finally causes polymer precipitation.Intermolecular association produces crosslinked.No matter the generation molecule is interior or intermolecular association, described terpolymer is insoluble to contain and surpasses about 15ppmCa ²⁺And/or Mg ²⁺Water in.Because the strong interaction between the carboxylate radical of calcium ion and terpolymer, dissociating of compound almost is impossible, because this association is irreversible.So, be exposed to high Ca ²⁺And/or Mg ²⁺Above-mentioned polymer in the concentration solution will be not dispersed in the water, even calcium concentration descends.This has limited polymer as the application that can dash abandoning property adhesive, because have hard water in most of area of the U.S., it contains above 15ppmCa ²⁺And/or Mg ²⁺

Transferring the patent application to be examined of Kimberly-Clarke, be US patent application serial number No.09/223, the disclosed content of 999 (on December 31st, 1998 filed an application) is introduced into for reference, discloses the improvement of acrylic ternary copolymer of the above-mentioned patent of Lion company.Specifically, US patent application serial number No.09/223,999 disclose the acrylic ternary copolymer of azochlorosulfonate acid anion modification, with unmodified Lion polymer phase ratio, it at harder water (for example up to 200ppm Ca ²⁺And/or Mg ²⁺) in have improved dispersiveness.Yet, the acrylic ternary copolymer of the azochlorosulfonate acid anion modification of the ion-sensitive type polymer of above-mentioned Lion company referenced patent and patent application to be examined, when being used as the adhesive of personal care product such as hygenic towelette, the sheet material wettability that typically has minimizing, the sheet material stiffness that increases, the sheet material viscosity that increases, the adhesive spray property of minimizing and high product cost.

Another acquiring way of dispersible personal care product is disclosed in the USP5 of the Kao company of Tokyo, in 281,306.This patent disclosure the cleaning sheet material of water disintegratable, i.e. hygenic towelette, it comprises with the water-soluble binder treated water dispersibility fiber with carboxyl.Described cleaning sheet usefulness contains the water-compatible organic solvent of 5%-95% and the cleaning agent of 95%-5% water is handled.Preferred organic is a propylene glycol.Described cleaning sheet has kept wet strength and has been not dispersed in the organic solvent type cleaning agent, but is dispersed in the water.

Though many patent disclosures be used for water and can disperse maybe to dash the various ions of the material of abandoning and the composition of thermo-responsive type, but still need dispersible goods, it has softness, flexible, three dimensions and resilience; Have core sucting action and structural intergrity in the presence of body fluid under body temperature; Dash real fiber dispersion after abandoning with having, so that fiber does not twine tree root or bending in sewage pipe at toilet.In addition, known ion-sensitive type polymer, as those and Kimberly-Clarke of Lion company wait to examine those of patent application, under high-rate of shear, have higher viscosity, make use by spraying become can not or unrealistic.And, need comprise soft hard water zone at whole world all regions in the prior art, have dashing of water dispersible and abandon goods.In addition, also need water-dispersible adhesive, do not reduce the wettability of the product that uses them and be sprayable, so that be applied over and be penetrated in the product easily and equably.At last, also need water-dispersible can dash the hygenic towelette abandon, it is stable in storage process and in use keeps the wet strength of desired level, and availablely contains moisturizing compositions less or that be substantially free of organic solvent and carry out wetting.This type of product needed has a rational cost but does not influence security of products and some things that environmental factor and product in the past can't be realized.

Summary of the invention

The present invention relates to ion-sensitive type polymer formulation material, it be developed can solve with document in used ion-sensitive type polymer the problems referred to above relevant of describing with other polymer.Ion-sensitive type polymer formulation material of the present invention has " triggering character ", so that described polymer is insoluble to the ion moisturizing compositions (the monovalent salt solution of 0.3% to 10% concentration according to appointment) of the ion that contains specific type and concentration, but water, comprise divalent salt solutions, as have the hard water of 200ppm at the most (1,000,000/part) calcium and magnesium ion, can dissolve during dilution.Different with some ion-sensitive type polymer formulation material, because the ionomer effect of calcium ion, it has lost dispersiveness in hard water, and polymer formulation material of the present invention is for calcium and/or magnesium ion relative insensitivity.Therefore, containing dashing of polymer formulation material of the present invention abandons goods kept dispersiveness in hard water.In addition, ion-sensitive type polymer formulation material of the present invention can have the improvement performance of shear viscosity of spray property or minimizing and so on, the product stiffness of improved products wettability or reduction and the character of viscosity.

Polymer formulation material of the present invention can be used as the air-laid of the application such as the bodyside liner in various personal care products, fluid distribution materials, fluid suck material (prominent rising) or covering blank and the adhesive and the construction package of wet-laid non-woven fabric.Polymer formulation material of the present invention is suitable especially abandons personal care product as dashing, especially individual use as cleaning or processing skin, the hygenic towelette that cosmetics are removed stage makeup and costume, nail polish is removed, medical treatment and nursing is used, adhesive material, and the polishing piece that is used for stiff dough cleaning, car care, this is comprising the polishing piece that contains cleaning agent, disinfectant etc.Can dash and abandon goods and storing and being kept perfectly property or wet strength between the operating period, and it can divide or disperse after discarded in toilet under salinity is reduced to critical level the time.The suitable substrate of handling usefulness contains flimsy material, as crimps or do not have a flimsy material that crimps, (coform) next to the shin goods, hydration entanglement thin slice, the felt of air-laid, fluff pulp, non-woven thin slice and their composite.The method of the pucker-free flimsy material that production is used in the present invention and the three-dimensional thin slice of molding can see the US patent application serial number of owning together 08/912,906, " Wet Resilient Webs and DisposableArticles Made Therewith ", people such as F.-J.Chen, on August 15th, 1997 filed an application; Be issued to people's such as Chiu USP5 July 4 nineteen ninety-five, 429,686; Be issued to the USP5 of S.J.Sudall and S.A.Engel, 399,412 March 21 nineteen ninety-five; Be issued to people's such as Wendt USP5 on September 30th, 1997,672,248; Be issued to people's such as Farrington USP5 with on March 4th, 1997,607,551; All these are introduced into for reference with full content.The flimsy material structure of the molding of above patent especially helps the cleaning action that provides good in hygenic towelette.Good cleaning action can also be by providing the texture degree and promoting by embossing on textured fabric etc., molding, wetting and thorough air drying in other base material.

The material of air-laid can be by containing the air-flow of fiber and other optional material, with the condition of substantially dry, is metered into the silk thread (wire) that levels typical moves and forms with on the silk screen (screen).The appropriate system and the device that the mixture of fiber and thermoplastic are carried out air-laid are disclosed in for example USP4,157,724 (Persson), the Re.USP31 that on June 12nd, 1979 announced and announced on December 25th, 1984 again, 775; USP4,278,113 (Persson) announced on July 14th, 1981; USP4,264,289 (DAY) announced on April 28th, 1981; USP4,352,649 (people such as Jacobsen), October 5 nineteen eighty-two; USP4,353,687 people such as () Hosler announce October 12 nineteen eighty-two; USP4,494,278 people such as () Kroyer announced on January 22nd, 1985; USP4,627,806 (Jansens) were announced on December 9th, 1986; USP4,650,409 people such as () Nistri announced on March 17th, 1987; And USP4,724,980 (Farley) announced on February 16th, 1988; And USP4,640,810 people such as () Laursen announced on February 3rd, 1987.

The invention also discloses by the polymer formulation material that uses above-mentioned uniqueness and how to make the water dispersible non-weaving cloth as adhesive composition, contain and cover blank (lining), suck (prominent rising) material and hygenic towelette, it is stable in having the fluid that first kind of ion form, and described ratio of components is in this way significantly greater than the monovalent ion under the specific concentration of seeing in typical hard water.The non-weaving cloth that is obtained can dash owing to the ion-sensitive type that is customized becomes and abandons and water-dispersible, and it can be triggered, but need not to consider the hardness of water in the U.S. and global WC pans.Dispersible goods according to the present invention can also have softness and flexible improvement character.This based article also has the viscosity of reduction.In some instances, described polymer formulation material (handling this based article with them) can have the improvement character of spray property, convenience except using changes into cost savings, and they have also improved distribution of polymer and the ability that is penetrated in the product on product.

The present invention further discloses the improved moisturizing compositions that is used for hygenic towelette.The hygenic towelette that uses polymer formulation material of the present invention is stable in storage process and has in use kept the wet strength of desired level and with containing less or to be substantially free of the moisturizing compositions or the cleaning agent of organic solvent wetting.

After having read the embodiment that describes in detail below disclosed and appended figure and claim, these feature and advantage of the present invention will become fully aware of.

Description of drawings

Fig. 1 is a curve map of having described wet strength data and the ionic environment and the soak time correlation of three kinds of adhesive formulation.

Fig. 2 shown when the fabric of thin slice that comprises 68gsm cork air-laid and ion-sensitive type adhesive is soaked in the solution that contains calcium ion, and how wet tensile is passed and the chart (CDWT that represents to soak a period of time with g/2.54cm) that changes in time.

Fig. 3 will take from Fig. 2 Lion SSB-3b product two data groups (being designated as code 3300) with according to 75/25 ratio blending Dur-O-Set ^The sulfonated salts sensitive binder of RB polymer compares.

The specific embodiment

Abandon or the effective ion-sensitive type formulation of water-dispersible personal care product in order to become to be suitable for dashing, described formulation should be (1) functionalization ideally; Promptly under the condition of control, keep wet strength and dissolve apace or be dispersed in soft water or the hard water, as the water in global WC pans and sink; (2) safety (nontoxic); (3) relatively economical.Except that above-mentioned factor, when being used as the adhesive composition of nonwoven substrates such as hygenic towelette, the ion-sensitive type formulation should have (4) machinability on commercial scale ideally, promptly on large-scale basis, apply quickly, as by spraying, therefore require adhesive composition under high shear, to have lower viscosity; (5) provide the wettability of the sheet or the base material of acceptable level; (6) provide the improved products feel, and the viscosity that reduces flexible as improved products.Described moisturizing compositions (handling hygenic towelette of the present invention with it) can provide more aforesaid advantages, in addition, can provide in the following one or multinomial: (7) improved skin nursing, as skin irritation or other benefit that reduces, (8) tactile properties of Gai Shaning, and (9) provide the balance in the use that good cleaning effect is provided by the friction on skin with between lubricating.Ion-sensitive type polymer formulation material of the present invention and the goods that make with it.Especially the hygenic towelette that contains the following special moisturizing compositions of listing can satisfy many or whole in the above-mentioned standard.Certainly, there is no need to require within the scope of the invention all products all to have whole advantages of the preferred embodiment of the invention.

Polymer formulation material of the present invention can be from single ignitionability polymer such as ion-sensitive type polymer of planting, or from the combination of two or more different polymer, as the ignitionability polymer with help adhesive, forms.Ideally, at least a polymer of polymer formulation material of the present invention is the ion-sensitive type polymer.The ion-sensitive type polymer is well known in the prior art and contains its water-soluble type and amount and any polymer of changing along with the ion that exists in water.The ion-sensitive type polymer that can be used among the present invention comprises, but be not limited to Lion polymer discussed above, as the Lion acrylic ternary copolymer, transfer the acrylic ternary copolymer of azochlorosulfonate acid anion modification of the unexamined patent application 09/223,999 of the global company of Kimberly-Clarke; Also transfer the global company of Kimberly-Clarke 04 day May in 2000 application (be defined as KC No.15851 with title for " ion-sensitive hard water dispersible polymers and application thereof "; J ﹠amp; A No.11302-0481; Express MailLabel No.EL498682165US) the acrylic acid free copolymer of unexamined US patent application serial number No.; And, other ion-and chemistry-sensitive polymer, comprise people such as being issued to Mumick on March 28th, 2000 and also transfer the USP6 of the global company of Kimberly-Clarke, 043,317 polymer; The disclosure of these documents is all introduced for reference.

Other known ignitionability polymer contains temperature sensitive and polymer temperature-sensitive, and those polymer that become dispersibility in the presence of the dispersing aid in the water that is put into water closet or other water source, as at USP5,948, discuss in 710 (were issued to people such as Pomplun on September 7th, 1999 and transfer the global company of Kimberly-Clarke), it points out to make polymer to become degradable another approach in water is by utilizing variations in temperature.Some polymer shows the cloud point temperature.As a result, these polymer will precipitate from solution under distinct temperature (its cloud point) and separate out.These polymer can be used for forming fiber, and it is insoluble in the water that is higher than uniform temperature, but they become solvable in the water of lower temperature, and so degradable.As a result, might select or a kind of polymer of blend, it is not degraded in as urine at body fluid under at body temperature or near body temperature (37 ℃), but is under a kind of temperature that is lower than body temperature when putting into, and it will be degraded when for example being in the water under the room temperature (23 ℃).An example of this base polymer is a polyvinyl methyl ether, and it has 34 ℃ cloud point.When this polymer is exposed to 37 ℃ body fluid as when urine, it is not degraded when this temperature is higher than its cloud point (34 ℃).Yet if described polymer is placed in the water that is under the room temperature (23 ℃), As time goes on, it will be got back in the solution when it is exposed in the water that is under the temperature lower than its cloud point now.Therefore, described polymer will begin degraded.The blend of polyvinyl methyl ether and copolymer also can be considered.Other cold water soluble polymer contains poly-(vinyl alcohol) graft copolymer that the Japanese synthesis of chemicals Co., Ltd by Osaka, Japan provides, and it is encoded to Ecomaty AX2000, AX10000 and AX300G.The ion-sensitive type polymer

The above referenced unexamined patent application of ion-sensitive type Lion polymer and the global company of Kimberly-Clarke and the ion-sensitive type polymer of US patent can be used among the present invention.Transfer the unexamined patent application 09/223 of the global company of Kimberly-Clarke, the acrylic ternary copolymer of 999 azochlorosulfonate acid anion modification is desirable, because it is different with the polymer of Lion company and other polymer of in technical literature, enumerating, the polymer of the patent application 09/223,999 of unexamined dissolves in to have and is lower than about 10ppm Ca ²⁺And/or Mg ²⁺To about 200ppm Ca ²⁺And/or Mg ²⁺Water in.The polymer of the patent application of unexamined can at utmost reduce the potential strong interaction between the anion of polymer and the CATION in water after preparation.This strong interaction can be by R.G.Pearson at " JACS (Journal of the American Chemical Society) ", 85 volumes, the hard-soft acid-alkali theory that proposes in 3533 pages (1963); Or N.S.Isaacs is at textbook " Physical Organic Chemistry (Physical Organic Chemistry) ", Longman science and technology publishing house, John Wiley ﹠amp; Sons, Inc., explain in (1987) in New York.The strong mutually influence of hard anion and hard CATION.The also strong mutually influence of soft anion and soft CATION.Yet soft anion and hard CATION be weak interaction and vice versa each other.In the Lion polymer, the carboxylate anion of sodium acrylate is hard anion, it and the hard CATION Ca that exists in the water of medium hardness and high rigidity ²⁺And/or Mg ²⁺The strong interaction taken place.By replacing carboxylate anion with softer anion such as azochlorosulfonate acid anion, the anion of ion ignitionability polymer and in the water of medium hardness and high rigidity the interaction between the existing hard CATION will reduce.

Term used herein " soft water " is meant that divalent ion content is lower than the water of about 10ppm.Term used herein " moderately hard water " is meant that divalent ion content is about 10 to about 50ppm water.Term used herein " high hardness water " is meant that divalent ion content surpasses about 50ppm and arrives the water of about 200ppm at the most.Be used to form the hydrophobic/hydrophilic balance and the composition of the combination of the polymer of formulation and polymer by control, can produce ion-sensitive type polymer formulation material with required use adhesion strength and the water dispersible in water.Described ion-sensitive type polymer can be a copolymer, as terpolymer.

Ion-sensitive type acrylic copolymer of the present invention can contain can radical polymerization synthetic copolymer and the specifically acrylic monomers of terpolymer and any combination of acrylate (alkyl acrylate) monomer.Suitable acrylic monomers includes, but are not limited to, acrylic acid and methacrylic acid.Suitable acrylic monomers comprises, but be not limited to, have the acrylate of cycloalkyl of the alkyl of 1-18 carbon atom or 3-18 carbon atom and methacrylate and preferably, acrylate and/or methacrylate with cycloalkyl of the alkyl of 1-12 carbon atom or 3-12 carbon atom can use separately or be used in combination.Other suitable monomers includes, but are not limited to, acrylamide and Methacrylamide type monomer, and as acrylamide, N,N-DMAA, N-ethyl acrylamide, N-N-isopropylacrylamide, and n-methylolacrylamide; N-acetyl-pyrrolidine ketone; The N-vinyl formamide; Hydroxyalkyl acrylates and hydroxyalkyl methacrylates are as hydroxyethyl methylacrylate and hydroxyethyl acrylate.Acrylic monomers and acrylate monomer that other is suitable are disclosed in USP5,317,063 (transferring Lion company, the Tokyo), and its disclosure is all introduced for reference here.Particularly preferred acrylic ternary copolymer is LION SSB-3b, can obtain from Lion company.(in selective embodiment, described ion-sensitive type polymer is formed from the monomer that is different from acrylic acid or its derivative, or contains less acrylic acid, methacrylic acid and their salt.)

The relative quantity of monomer in acrylic copolymer of the present invention will be with the polymer that is obtained in desired properties change.The mole % at the most about 70 mole %s of acrylic monomers in copolymer.More particularly, the mole % of acrylic monomers in copolymer is the about 50 moles of % of about 15-.The most specifically, the mole % of acrylic monomers in copolymer is the about 40 moles of % of about 25-.

More particularly, the example that is used for the present invention's acrylic copolymer comprises 10 weight %-90 weight %, the acrylic acid of 20 weight %-70 weight % and/or methacrylic acid and 90 weight %-10 weight % ideally, the alkyl of 80 weight %-30 weight % or have the acrylate of cycloalkyl of 3-18 carbon atom and/or the copolymer of methacrylate ideally with 1-18 carbon atom, 1-60 mole % in acrylic acid and/or the methacrylic acid wherein, 5-50 mole % is neutralized formation salt ideally; Or 30 weight %-75 weight %, the acrylic acid of 40 weight %-65 weight % ideally, 5 weight %-30 weight %, the acrylate and/or the methacrylate of the alkyl of 10 weight %-25 weight % ideally with 8-12 carbon atom, with 20 weight %-40 weight %, the acrylate of the alkyl of 25 weight %-35 weight % and/or the copolymer of methacrylate ideally with 2-4 carbon atom, wherein acrylic acid 1-50 mole %, 2-40 mole % is neutralized and forms salt ideally.

Acrylic copolymer of the present invention can have mean molecule quantity, and it changes with the final use of polymer.Acrylic copolymer of the present invention has about 10,000 to about weight average molecular weight of 5,000,000.More particularly, the weight average molecular weight of acrylic copolymer of the present invention is about 25,000 to about 2,000,000, or more particularly, about 200,000 to about 1,000,000.

Acrylic copolymer of the present invention can be according to various polymerizations, and solution polymerization process prepares ideally.The suitable solvent of polymerization includes, but are not limited to, lower alcohol such as methyl alcohol, ethanol and propyl alcohol; The mixed solvent of water and one or more above-mentioned lower alcohols; And the mixed solvent of water and one or more lower ketones such as acetone or methyl ethyl ketone.

In polymerization of the present invention, can use any polymerization initiator.The selection of specific initiator will be depended on many factors, comprising but be not limited to described polymerization temperature, solvent and employed monomer.The suitable polymerization initiators that is used for the present invention includes, but not limited to 2,2 '-azodiisobutyronitrile, 2,2 '-azo two (2-methylbutyronitrile), 2,2 '-azo two (2, the 4-methyl pentane nitrile), 2,2 '-two (2-amidine propane) dihydrochloride of azo, 2,2 '-azo two (N, N '-dimethylene isobutyl amidine), potassium peroxydisulfate, ammonium persulfate, and aqueous hydrogen peroxide solution.The amount of polymerization initiator is about 0.01-5 weight % ideally, based on the gross weight of existing monomer.

Described polymerization temperature can be according to employed polymer solvent, and monomer and initator change, but generally is to arrive in about 90 ℃ of scopes at about 20 ℃.About 8 hours of the normally about 2-of polymerization time.

Comprise with the monomer that contains one or more sulfonate radicals according to the acrylic copolymer of azochlorosulfonate acid anion modification of the present invention being introduced in hydrophilic monomer in the acrylic copolymer of the present invention, as acrylic or methacrylic acid.The azochlorosulfonate acid anion of these monomers is softer than carboxylate anion because the negative electrical charge of azochlorosulfonate acid anion they three oxygen atoms and bigger sulphur atom on delocalization, opposite with only two oxygen atoms in carboxylate anion and less carbon atom.Contain the multivalent ion that exists in these monomers of softer azochlorosulfonate acid anion and the hard water, especially Ca ²⁺And Mg ²⁺Interaction between the ion is less.The suitable monomer that contains sulfonate radical comprises, but be not limited to, 2-acrylamido-2-methyl isophthalic acid-propane sulfonic acid (AMPS), organic or inorganic salt with 2-acrylamido-2-methyl isophthalic acid-propane sulfonic acid, as the alkaline-earth metal and the organic amine salt of 2-acrylamido-2-methyl isophthalic acid-propane sulfonic acid, the sodium salt (NaAMPS) of 2-acrylamido-2-methyl isophthalic acid-propane sulfonic acid particularly.The additional suitable monomer that contains sulfonate radical comprises, but be not limited to, 2-methyl-2-propene sulfonic acid, vinyl sulfonic acid, styrene sulfonic acid, methacrylic acid 2-sulfopropyl ester and acrylic acid 3-sulfopropyl ester, with their organic or inorganic salt, as alkaline-earth metal and organic amine salt, as alkyl ammonium hydroxide, wherein said alkyl is C ₁-C ₁₈In order to keep the hydrophobic/hydrophilic balance of ion-sensitive type polymer, one or more hydrophobic monomers are joined in the polymer.

The acrylic copolymer of ion-sensitive type azochlorosulfonate acid anion of the present invention modification can be produced from the monomer class that comprises following monomer: acrylic acid, methacrylic acid, or its combination; 2-acrylamido-2-methyl isophthalic acid-propane sulfonic acid (AMPS) and its organic or inorganic salt are as its sodium salt (NaAMPS); Butyl acrylate; And 2-ethylhexyl acrylate.Ideally, the acrylic copolymer of ion-sensitive type azochlorosulfonate acid anion of the present invention modification is produced from following monomer: acrylic acid; AMPS, NaAMPS or its combination; Butyl acrylate; And 2-ethylhexyl acrylate.Ideally, these monomers are to be present in the acrylic copolymer of azochlorosulfonate acid anion modification with following mole %: acrylic acid, and about 35 moles of % are to being lower than 80 moles of %; AMPS or NaAMPS arrive about 20 moles of % greater than 0 mole of %; Butyl acrylate arrives about 65 moles of % greater than 0 mole of %; And 2-ethylhexyl acrylate, arrive about 45 moles of % greater than 0 mole of %.More particularly, these monomers are to be present in the acrylic copolymer of azochlorosulfonate acid anion modification with following mole %: acrylic acid, about 50 moles of % to 67 mole of %; AMPS or NaAMPS arrive about 10 moles of % greater than 0 mole of %; Butyl acrylate, about 15 moles of % are to about 28 moles of %; And 2-ethylhexyl acrylate, about 7 moles of % are to about 15 moles of %.The most specifically, these monomers are to be present in the acrylic copolymer of azochlorosulfonate acid anion modification with following mole %: acrylic acid, and about 57 moles of % are to about 66 moles of %; AMPS or NaAMPS, about 1 mole of % is to about 6 moles of %; Butyl acrylate, about 15 moles of % are to about 28 moles of %; And 2-ethylhexyl acrylate, about 7 moles of % are to about 13 moles of %; Especially, about 60 moles of % acrylic acid, about 5 moles of %AMPS or NaAMPS, about 24.5 moles of % butyl acrylates and about 10.5 moles of % 2-ethylhexyl acrylates.

If AMPS is a kind of as in the described monomer, in the hope and the described acid constituents of at least a portion.Any inorganic base or organic base can be used as the neutralizer described acid constituents that neutralizes.The example of neutralizer includes, but not limited to inorganic base, as NaOH, and potassium hydroxide, lithium hydroxide and sodium carbonate, and amine, as monoethanolamine, diethanol amine, diethylaminoethanol, ammonia, trimethylamine, triethylamine, tripropyl amine (TPA), morpholine.Preferred neutralizer contains NaOH, potassium hydroxide, or its combination.

Sulfonate radical modified copolymer with brine sensitivity also can be produced by the sulfonation of existing polymer such as copolymer or acrylic acid derivation terpolymer.The method of sulfonated polymer is to know in the prior art.The production method of sulfonation or sulfated polymers is disclosed in USP3,624,069 (being issued to Schwclger in November, 1971); USP4,419,403 (being issued to Varona December 6 nineteen eighty-three); USP5,522,967 (being issued to Shet on June 4th, 1996); USP4,220,739 (being issued to Walles on September 2nd, 1980), USP5,783,200 (being issued to people such as Motlcy on July 21st, 1998), and following patent: USP2,400,720; 2,937,066; 2,786,780; 2,832,696; 3,613,957 and 3,740,258, all these are hereby incorporated by reference.The principle of sulphation and sulfonation (for example, handle via sulfamic acid, with thionyl chloride or chlorosulfonic acid reaction, or be exposed to sulfur trioxide) be by Samuel Shore and D.R.Berger at " Alcohol and Ether Alcohol Sulfates " at＜anion surfactant Anionic Surfactants, part 1, editor Warner M.Linfield, New York: Marcel Dekker, Inc., 1976, in the 135-149 page or leaf; With by Ben E.Edwards, " The Mechanlsms of Sulfonation and Sulfation ",＜anion surfactant Anionic Surfactants 〉, part 1, editor Warner M.Linfield, New York: Marcel DekkerInc., 1976, disclosed approach in the 111-134 page or leaf, both are hereby incorporated by reference.

In another embodiment of the present invention, above-mentioned ion-sensitive type polymer formulation material is as dashing the adhesive material of abandoning and/or can not dashing the goods of abandoning.In order to become the adhesive material of abandoning in the goods that dashes effectively in the whole U.S., ion-sensitive type polymer formulation material of the present invention keeps stable and keep their integrality under drying or the monovalent ion situation at low concentration, but containing divalent ion, especially becoming solvable in the water of calcium and magnesium ion up to about 200ppm.Ideally, the ion-sensitive type polymer formulation material of the present invention that contains acrylic copolymer is insoluble to contain at least about one or more of 0.3 weight % and contains in the salting liquid of inorganic and/or organic salt of monovalent ion.More desirably, the ion-sensitive type polymer formulation material of the present invention that contains acrylic copolymer is insoluble to one or more that contain the about 5.0 weight % of 0.3 weight %-that have an appointment and contains in the salting liquid of inorganic and/or organic salt of monovalent ion.Even more desirably, the ion-sensitive type polymer formulation material of the present invention that contains acrylic copolymer is insoluble to one or more that contain the about 3.0 weight % of 1 weight %-that have an appointment and contains in the salting liquid of inorganic and/or organic salt of monovalent ion.Suitable monovalent ion includes, but not limited to Na ⁺Ion, K ⁺Ion, Li ⁺Ion, NH ₄ ⁺Ion, low molecular weight quaternary ammonium compound (for example, on any side group, having those that are less than 5 carbon atoms) and its combination.

In another embodiment, the ion-sensitive type polymer formulation material of the present invention that contains the acrylic copolymer of azochlorosulfonate acid anion modification is insoluble to contain at least about one or more of 1 weight % and contains in the salting liquid of inorganic and/or organic salt of monovalent ion.More desirably, the ion-sensitive type polymer formulation material of the present invention that contains the acrylic ternary copolymer of azochlorosulfonate acid anion modification is insoluble to one or more that contain the about 5.0 weight % of 1 weight %-that have an appointment and contains in the salting liquid of inorganic and/or organic salt of monovalent ion.Even more desirably, the ion-sensitive type polymer formulation material of the present invention that contains the acrylic ternary copolymer of azochlorosulfonate acid anion modification is insoluble to one or more that contain the about 3.0 weight % of 1.0 weight %-that have an appointment and contains in the salting liquid of inorganic and/or organic salt of monovalent ion.Suitable monovalent ion includes, but not limited to Na ⁺Ion, K ⁺Ion, Li ⁺Ion, NH ₄ ⁺Ion, low molecular weight quaternary ammonium compound (for example, on any side group, having those that are less than 5 carbon atoms) and its combination.

Based on the nearest research of being undertaken by american chemical society, the water hardness that spreads all over the U.S. will be along with CaCO ₃Concentration from for soft water near zero to the about 500ppmCaCO for utmost point hard water ₃(about 200ppm Ca ²⁺Ion) changes a lot between.In order to ensure the polymer formulation material water dispersible in whole country (with the whole whole world), ion-sensitive type polymer formulation material of the present invention is wished to dissolve in and is contained the Ca up to about 50ppm ²⁺And/or Mg ²⁺In the water of ion.More desirably, ion-sensitive type polymer formulation material of the present invention dissolves in and contains the Ca up to about 100ppm ²⁺And/or Mg ²⁺In the water of ion.More desirably, ion-sensitive type polymer formulation material of the present invention dissolves in and contains the Ca up to about 150ppm ²⁺And/or Mg ²⁺In the water of ion.Even more desirably, ion-sensitive type polymer formulation material of the present invention dissolves in and contains the Ca up to about 200ppm ²⁺And/or Mg ²⁺In the water of ion.

Various polymer/surfactant systems can be used for providing ion-sensitive type Lion polymer and unexamined patent application 09/223, the acrylic ternary copolymer identical functions of 999 ion-sensitive type azochlorosulfonate acid anion modification does not need to be limited to sulfonic group or carboxy moiety.This type of other system is described as follows.

Contain phosphonate group, phosphonothiolic acid base or other organophosphor group as can with Ca ⁺⁺" soft " anionic phosphorylation polymer of setting up mispairing (mismatch) can be used as ion-sensitive type polymer of the present invention.This comprises modified cellulose or cellulose derivative and relevant natural gum, because have monovalent salt or other electrolyte and become insoluble.In one embodiment, the soluble cellulose derivative, as CMC, be phosphorylation and give insolublely, and can be effective as ion-sensitive type polymer formulation material, but can be scattered in the running water when time at high ionic strength or suitably in the solution of pH.In another example, the amino phosphinic acids group that belongs to anion or both sexes can add on the polymer.Amino phosphinic acids group can come addition by the condensation of hypophosphites and primary amine.The reaction of chloromethyl phosphinic acids and amine also can access useful anionic group, as Guenther W.Wasow at " Phosphorous-Containing Anionic Surfactants ", Anionic Surfactants:OrganicChemistry, editor Helmut W.Stache, New York: Marcel Dekker, 1996, described in the 589-590 page or leaf.The entire chapter digest that comprises the 551-629 page or leaf of above-mentioned books provides with preparation to have the relevant additional instruction of the polymer of useful phosphorus group and therefore is introduced into for reference.

Other method of preparation phosphorylated cellulose fiber is that everybody knows.These methods can be used for CMC, and it can be used as adhesive then.Method for example is disclosed in USP3, on June 19th, 739,782,1973 announces, and is issued to Bernardin.Synthetic or the natural polymer that cellulose and process modification have other " soft " anionic group can be used as ion-sensitive type polymer of the present invention.

Provide the natural polymer of useful anionic group to can be used among the present invention already.This base polymer contains agar and antler glue, and they have a plurality of ester sulfate groups.If necessary, these further modification with have additional anionic group (for example, sulfonation, phosphorylation, etc.).

Have two or more different soft anionic groups, as having sulfonic group and phosphonate group simultaneously, polymer also can be used among the present invention, wherein the relative quantity of different anions can be through overregulating to optimize intensity, ion-sensitive and the dispersiveness of polymer.This also contains zwitterionic and compounds both sexes.Especially polyampholyte can surpass or be lower than dissolving easily under the situation of described isoelectric point, but is insoluble at the isoelectric point place, for the trigger mechanism based on electrolyte concentration and pH provides potentiality.The example of polyampholyte comprises, but be not limited to, the copolymer of methacrylic acid and allyl amine, the copolymer of methacrylic acid and 2-vinylpyridine, have side and hang the polysiloxanes ionomer of amphiprotic group, with the polymer that directly forms from zwitterionic monomer salt, ion pair as people's such as Salamone comonomer (IPC), all be disclosed in PolymericSurfactans by Irja Piirma, New York: Marcel Dekker, Inc., 1992, the 251-254 page or leaf is introduced into for reference.

Protein can be saltoutd, and optional have additional soft ionic group through modification, can be used as ion-sensitive type polymer of the present invention.

System can be used among the present invention as those that contain alginic acid derivative or natural sulfonated polymer, the calcium ion of its middle and high concentration (being much higher than the 250ppm that may run into or lower level in hard water) is dissolved adhesive not, but even allows hard water sufficiently dilute calcium ion to give the adhesive dispersibility.Therefore, although wishing ion-sensitive type adhesive of the present invention is insoluble in the solution that contains the monovalent metallic ion that is higher than critical concentration, useful in some embodiments ion-sensitive type adhesive is insoluble in the solution that contains the bivalent metal ion that is higher than critical concentration, but, when reducing to about 200ppm or more particularly reduce to about 100ppm, bivalent metal ion concentration becomes solvable, make that have the ion-sensitive type polymer keeps good wet strength as the fiber base material of adhesive in the solution of the bivalent metal ion that contains high concentration, and in the water of hard water or middle hardness, become water-dispersible.Therefore, the paper handkerchief forfeiture wet strength that described trigger mechanism-cause is prewetted and even in hard water, become can dash abandon-can be owing to monovalence or bivalent metal ion, the especially dilution of alkali metal ion for monovalent ion, is preferred as sodium.Natural polymer and natural gum can be used as ion sensitive binder, are described in Industrial Gums by R.L.Whistler and J.N.BeMiller, New York: Academic Press, Inc. in 1973, is introduced into for reference.The natural polymer that becomes strong or form gel in the presence of calcium ion is described below.

Alginic acid is (in order there to be good dispersiveness, it need present sodium alginate and calcium alginate form, based on the performance of when using adhesive to be used for tablet, being reported-) referring to Whistler and BeMiller 62 pages, it is as alginic acid, calcium alginate or be insoluble generally as the salt of most of polyvalent metal, but is solubility as sodium alginate or conduct with low molecular weight amine or the formed salt of quaternary ammonium compound (p.67), can be used among the present invention.Can use this material, especially when zinc is undissolvable metal ion.

Other useful polymer contains antler glue and Iridophycan, all is the sea grass derivative that contains ester-sulfuric ester.

Natural polymer (containing cellulose interior) and synthetic polymer can both provide anionic group, and as sulfonic group, phosphonate group, and carboxyl can form the bridged linkage that is connected to other molecule in the presence of the ion of adequate types and concentration.When described ion concentration significantly changed, as by cleaning article of the present invention is put into water closet, described goods became low-intensity and disintegration.

The ion-sensitive type polymer contains and can be dispersed in the aqueous environment under the rated condition, but is not dispersed in whole aqueous environments those.Example comprises the material that alkali is dispersible or salt is insoluble.For example, (Eastman Chemical Company, Kingsport TN) can be dispersed in the deionized water, but be insoluble in the saline solution Eastman AQ copolyesters.They have been proposed to be used in the goods such as diaper of absorb body fluids.The out of Memory of relevant these polymer is provided at european patent application 773,315-A1, " nonwoven sheet of moisture soluble polyamide reaches by its goods Nonwoven Web Comprising Water Soluble Polyamides and ArticlesConstructed Therefrom that constitutes ", on May 14th, 1997 published, S.U.Ahmed.

Useful polyampholyte contains polyacrylamide type copolymer, and it is extremely sensitive for sodium chloride concentration.

USP3,939,836 (its disclosure is introduced into for reference) have been described the alkali metal salt of Cellulose sulfate ester resin, it makes fabric possess good baked tensile strength, when intensity major part as described in described fabric is when being typically the salting liquid of body fluid as blood, menstrual fluid or urine and contacting is kept and is dispersed in the water easily.Described resin has 0.10 to 0.45 sulfuric ester substitution value.At USP4, in 419,403 (its disclosure is hereby incorporated by reference), cellulosic colloidal attitude sulfuric ester is a water-dispersible adhesive efficiently, wherein adhesive the has ratio much higher sulfuric ester substitution value of ' 836 patent.The adhesive of ' 403 patents forms gel in the presence of potassium ion.Other patent relevant with dispersible polymers and hygenic towelette comprises USP4,117,187; 5,417,977; 4,309,469; 5,317,063; 5,312,883; 5,384,189; 5,543,488; 5,571,876; 5,709,940; 5,718,790, their disclosure is hereby incorporated by reference.

Help binder polymer

As mentioned above, polymer formulation material of the present invention is to plant being combined to form of ion-sensitive type polymer or two or more different polymer from list, and wherein at least a polymer is the ion-sensitive type polymer.Second kind of polymer can be to help binder polymer.Help the type and the amount of binder polymer should make that when mixing the described binder polymer suitable height that helps is dispersed in the described ion-sensitive type polymer with the ion-sensitive type polymer phase; That is, wish that the ion-sensitive type polymer is that to help binder polymer be discontinuous phase for continuous phase and hope.Ideally, the described binder polymer that helps can also satisfy several additional standards.For example, helping binder polymer can have glass transition temperature is Tg, and it is lower than the glass transition temperature of ion-sensitive type polymer.In addition or in addition, it can be water-fast helping binder polymer, maybe can reduce the shear viscosity of ion-sensitive type polymer.The described adhesive that helps, with solid masses with respect to the ignitionability polymer, for below about 45% or 45%, below specifically about 30% or 30%, below more particularly about 20% or 20%, again below more particularly about 15% or 15% and the most about 10% or 10% following level exist, scope for example be about 1% to about 45% or about 25% arrive about 35%, and about 1% to about 20% or about 5% to about 25%.Help low that the amount of adhesive should be enough, so that help water-insoluble cohesive body of the potential formation of adhesive (bond) or film, help adhesive to keep to produce enough crosslinked discontinuous phase like this, or form insoluble cohesive body, damaged the dispersiveness of processed base material.In one embodiment, ion-sensitive type polymer formulation material of the present invention poly-(ethane-acetic acid ethyenyl ester) that contain the acrylic ternary copolymer of the 75 weight % that have an appointment and about 25 weight % helps adhesive.

Ideally, yet and not necessarily, describedly help adhesive will reduce the ion-sensitive type polymer when combining with the ion-sensitive type polymer phase shear viscosity, so that ion-sensitive type polymer and help the blend of binder polymer to be sprayed to a kind of degree.The sprayable described polymer that is meant can be applied on the non-woven fiber base material by spray method, and distribution of polymer on whole base material and polymer be penetrated into and make the polymer formulation material put in the base material equably in the base material.

The described binder polymer that helps can present emulsion form latex form.The surfactant system that uses in described latax should require it not disturb the dispersiveness of described ion-sensitive type polymer basically.

In some embodiments, ion-sensitive type polymer and the described combination that helps binder polymer and are only compared with the goods of described ion-sensitive type polymer, reduction have been adopted the stiffness of their goods.Have now found that, when in order to form hygenic towelette with described ion-sensitive type polymer, acrylic ternary copolymer as the azochlorosulfonate acid anion modification, put on nonwoven substrates, when going up as the layer of the air-laid of wood pulp, described non-woven sheet material has undesirable stiffness, and this is harmful to the feel of dry products or the disposal (handling) of drying slice in processing procedure, when the brittle break motility of dry substrate.By described ion-sensitive type polymer and the described binder polymer that helps are combined, can reduce the stiffness of this based article.

The binder polymer that helps of the present invention has mean molecule quantity, and it changes with the final use of polymer.It is ideally, described that to help binder polymer to have weight average molecular weight be about 500,000 to about 200,000,000.It is more desirably, described that to help binder polymer to have weight average molecular weight be about 500,000 to about 100,000,000.

Many or the whole binder polymer that helps that satisfies in the aforesaid standards comprises, but be not limited to, poly-(ethane-acetic acid ethyenyl ester), poly-(styrene-butadiene), poly-(styrene-propene acid), vinylacrylic acid terpolymer, chloroprene rubber, the polyester latex, acrylic emulsion latex, polyvinyl chloride, ethylene-vinyl chloride copolymer, carboxylic acid vinyl acetate latex etc., they all can be non-crosslinked (for example, lacking N hydroxymethyl acrylamide or other crosslinking agent), crosslinked, or potentiality crosslinked (that is, having crosslinking agent to exist after the preparation), but not crosslinked basically in final products.

Particularly preferred noncrosslinking poly-(ethane-acetic acid ethyenyl ester) is from National Starch andChemical Co., the Dur-O-Set that Bridgewater, NJ are purchased ^RB.Particularly preferred noncrosslinking poly-(styrene-butadiene) is can be from Mallard Creek Polymers, Charlotte, the Rovene that NC obtains ^4817.Particularly preferred noncrosslinking poly-(styrene-propene acid) is can be from Rohm andHaas, Philadclphia, the Rhoplex that PA obtains ^NM 1715K.

When using latex to help adhesive or any potentiality is crosslinkable when helping adhesive, described latex should stop the water-insoluble basically cohesive body of formation, and it bonds together fiber base material and the dispersiveness of interference products.Therefore, described latex can not contain crosslinking agent, as NMA, or does not contain the catalyst of described crosslinking agent or both.Additionally, can add the inhibitor that disturbs crosslinking agent or disturb catalyst, so that even crosslinked destroyed when goods are heated to normal crosslinking temperature.This type of inhibitor can comprise free radical scavenger, methylnaphthohydroquinone, tert-butyl catechol, pH regulator agent such as potassium hydroxide etc.For some latex crosslinking agents, as N-methylol-acrylamide (NMA), for example, the pH of raising can disturb crosslinked under normal crosslinking temperature (for example, about more than 130 ℃ or 130 ℃) as the pH more than 8 or 8.Also additionally, contain latex and help the goods of adhesive can remain on the temperature that can take place under the crosslinked temperature range, crosslinked so that the existence of crosslinking agent can not cause, or make the degree of cross linking keep enough low, thus the dispersiveness of goods is without prejudice.Also additionally, the amount of crosslinkable latex can keep below threshold level, even so that have crosslinkedly, described goods still keep dispersibility.For example, a spot of crosslinkable latex is dispersed in the ion-sensitive type adhesive as discrete particle can allow dispersiveness, even when full cross-linked.For the back one embodiment, the amount of latex can be lower than about 20 weight % and, more particularly, be lower than about 15 weight %, with respect to the ion-sensitive type adhesive.

Latex compounds is no matter crosslinkable whether, needs not to be the described adhesive that helps.Disperseed the SEM microphoto of ion sensitive binder film of the success of useful non-crosslinked latax to show therein, latex helps adhesive particle to remain in the ion-sensitive type adhesive as discrete entity, might partly be used as filler.Can believe that other material can play similar effect, be included in the mineral or the particulate filler that disperse in the ion-sensitive type adhesive, the optional surfactant/dispersant of adding to some extent that contains.For example, in the embodiment of an imagination, Presperse, Inc. (Piscataway, NJ) free flow pattern Ganzpearl PS-8F particle, styrene/ethylene base benzene copolymer with about 0.4 micron particles can be present in machinery, sense of touch and the optical property to improve described ion-sensitive type adhesive in the ion-sensitive type adhesive with the amount of about 2-10 weight %.Other filler shape material comprises metal, glass, carbon, mineral, the particulate of quartz and/or plastics such as acrylic acid or phenolic resins, framboid, or microballon, and the hollow particle of the inert atmosphere that has had at inner sealing.Example comprises the EXPANCEL phenolic resins microsphere (significantly expanding) that obtains from the Expanccl of Sweden when heating, or the acrylic resin microsphere that is known as PM 6545 that obtains from Pennsylvanian Pq Corp..Blowing agent comprises the carbon dioxide that is dissolved in the ion-sensitive type adhesive, also can provide helpful discontinuity as bubble in the matrix of ion-sensitive type adhesive, allows dispersion gas phase in the ion-sensitive type adhesive as helping adhesive.Usually, not miscible with adhesive any compatibility material especially itself has the material of bonding or cementing property, can be as helping adhesive, if not providing, will cause mainly with the covalent bonds fiber in the mode of the water dispersible that disturbs product with this state.Yet, additional benefits also is provided, as the injection viscosity that reduces, those materials be especially preferred.The bonding adhesive that helps, as do not conform to crosslinking agent or contain the latex of a spot of crosslinking agent, being considered to especially to help provides good result under the treatment conditions (containing dry at elevated temperatures) at wide region.

As mentioned above, help the Tg of binder polymer can be lower than the Tg of ion-sensitive type polymer, it has been considered to improve the flexible of processed base material, especially under drying regime.What provide in following table 1 is some the contrast of glass transition temperature in the preferred polymers that can be used among the present invention.

The glass transition temperature of table 1. selective polymer

Polymer	Glass transition temperature-Tg
		The acrylic ternary copolymer of azochlorosulfonate acid anion modification (drying)	55℃
The acrylic ternary copolymer of azochlorosulfonate acid anion modification (wetting)	-22℃
		Rhoplex NW 1715K (drying)	-6℃
Rovene 4817 (drying)	-4℃
		Elite (drying)	10℃
Elite 22 (drying)	-15℃

In another embodiment, ion-sensitive type polymer formulation material of the present invention contains gather (ethane-acetic acid ethyenyl ester) of the acrylic ternary copolymer of azochlorosulfonate acid anion modification of the about 95 weight % of the 55-that has an appointment and the about 45 weight % of about 5-.More desirably, ion-sensitive type polymer formulation material of the present invention contains the acrylic ternary copolymer of azochlorosulfonate acid anion modification of the 75 weight % that have an appointment and poly-(ethane-acetic acid ethyenyl ester) of about 25 weight %.

As mentioned above, the useful binder polymer that helps can contain many lataxes that are purchased, and comprises from Rovene ^Series (from Charlotte, the styrene-butadiene latexes that the Mallard Creek Polymers of N.C. obtains), the Rhoplex  latex of Rohm and Haas Company and the Elite of National Starch ^Those that select in the latex.Polymer emulsion or dispersion contain the little polymer beads that is dispersed in the water usually, as are typically spherical crosslinkable ethene-vinyl acetate copolymer, and with surface active ingredient such as low molecular weight emulsifier or high molecular protecting colloid stabilisation in addition.These liquid adhesives can pass through known method in the prior art field of the adhesive treatment of supatex fabric thin slice, comprise the coating of spraying or foams, exuberant roll gap dipping, methods such as curtain coating, be applied on the thin slice or other base material of air-laid, in addition dry subsequently.Generally, can consider various types of latex compounds and other resin or emulsion, comprising the vinyl acetate copolymer latex, as the 76RES 7800 of Union Oil Chemicals Divisions and the Resyn of National Starch andChemical company ^25-1103, Resyn ^25-1109, Resyn ^25-1119 and Resyn ^25-1189, ethane-acetic acid ethyenyl ester copolymer emulsion is as the Airflex of Air Products andChemicals Inc. ^Vinyl-vinyl acetate copolymer, acrylic acid-vinyl acetate copolymer emulsion is as the Rhoplex of Rohm and Haas Company ^AR-74, the Synthemul of ReichholdChemicals Inc. ^97-726, the Resyn of National Starch and Chemical company ^25-1140,25-1141,25-1142 and Resyn-6820, vinylacrylic acid terpolymer latex is as 76 RES 3103 of Union Oil Chemical Division and the Resyn of National Starchand Chemical company ^251110, the acrylic emulsion latex is as the Rhoplex of Rohm and HaasCompany ^B-15J, Rhoplex ^P-376, Rhoplex ^TR-407, Rhoplex ^E-940, Rhoplex ^TR934, Rhoplex ^TR-520, Rhoplex ^HA-24 and Rhoplex ^The Hycar of NW1825 and B.F.Goodrich Chemical Group ^2600X322, Hycar ^2671, Hycar ^2679, Hycar ^26120 and Hycar ^2600X347, styrene-butadiene latexes is as 76 RES 4100 and 76 RES 8100 of Union Oil Chemicals Division, the Tylac of Reichhold Chemical Inc. ^Resin emulsion 68-412, Tyla ^Resin emulsion 68-067,68-319,68-413,68-500,68501 and the DL6672A of Dow Chemical Company, DL6663A, DL6638A, DL6626A, DL6620A, DL615A, DL617A, DL620A, DL640A, DL650A; And elastomer latex, as the neoprene of Serva Biochemicals; The polyester latex is as the Eastman AQ 29D of Eastman Chemical Company; The vinyl chloride latex is as the Gelon of B.F.Goodrich Chemical Group ^352; The ethylene-vinyl chloride copolymer emulsion is as the Airflex of Air Products and Chemicals ^Ethylene-vinyl chloride; Polyvinyl acetate ester homopolymer emulsion is as the Vinac of Air Products and Chemicals ^Carboxylic acid vinyl acetate emulsion resin is as the Synthemul of Reichhold Chemicals Inc. ^Synthetic resin emulsion 40-502, the Polyco of 40-503 and 97-664 and Rohm and Haas Company ^2149,2150 and 2171.Polysiloxane emulsion and adhesive also can be considered.

Help binder polymer can contain surface active cpd, it improves the wettability of base material after the using of binder combination.

In certain embodiments, the wettability of the dry substrate of handling with ion-sensitive type polymer formulation material may become problem, because becoming in dry run towards the gas phase directional selectivity, the hydrophobic parts of ion-sensitive type polymer formulation material is orientated, produced hydrophobic surface, when with after-applied moisturizing compositions, be difficult to wetting it, unless surfactant is joined in the described moisturizing compositions.Surfactant in helping binder polymer or other surface active ingredient can improve the wettability of the base material that the drying handled with ion-sensitive type polymer formulation material crosses.Surfactant in helping binder polymer is remarkable interfering ion sensitive polymer formulation not.Therefore, described adhesive should maintain the good integrality and the tactile properties of the pre-hygenic towelette of surfactant existence.

In one embodiment, be enough to realize that with respect to lacking to help binder polymer and contain consumption Comparatively speaking other of ion-sensitive type polymer formulation material of given TENSILE STRENGTH are equal to pre-hygenic towelette, effectively help binder polymer to replace the part of described ion-sensitive type polymer formulation material and allow have low stiffness, better tactile properties (for example lubricity or smoothness) or low-cost in the middle of at least one pre-hygenic towelette in realize given strength level.

Other helps binder polymer

(Burghausen, dry emulsion powder (DEP) adhesive Germany) is as the VINNEK of adhesive for Wacker Polymer Systems ^System can be used in some embodiments of the present invention.These are redispersible, the free-pouring binder powders that form from liquid emulsion.Little polymer beads from dispersion can be provided in the protectiveness matrix of water-soluble protecting colloid with the powder particle form.The surface of powder particle prevents to tie cake by the platelet of mineral crystal.As a result, in case be in the liquid dispersion, polymer beads now with flow freely, dry powdered form obtains, it can be scattered in again in the water or the increase by moisture become swelling, sticky particle.These particles can by in the air-laid process with fiber laydown they, add 10%-30% moisture subsequently and cause the particle swelling and adhere on the fiber, and finally be applied in the high bulkiness non-weaving cloth.This can be called " chewing gum effect ", is meant in a single day the drying in thin slice, inviscid fiber become the viscosity as chewing gum after getting wet.Obtained for polar surfaces and other surperficial good adhesive property.These adhesives can be used as the free mobility particle that forms from latax and obtain, described latax in addition dry and with agent treated to gather in preventing under drying regime.They can be embedded in air and in the air-laid process with under the fiber laydown, or by electrostatic means, by direct contact, be applied in the base material by gravity feed arrangement and alternate manner.They can be before or after the adhesive drying, is employed lacking under the situation of adhesive.Contact with moisture as liquid or vapor form that latex particle will be taken place will be rehydrated, and cause their swellings and adhere on the fiber.Dry and (for example be heated to high temperature, be higher than 160 ℃) cause that adhesive particle becomes crosslinked and resistance to water, but drying can cause the formation of film and the bonding of fiber to a certain degree under lower temperature (for example at 110 ℃ or lower), but can seriously not damage the water dispersible of pre-hygenic towelette.Therefore, can believe, can use the described product that is purchased, help the curing of binder polymer, as limit dry time and temperature, reduce the amount of crosslinking agent to provide certain bonding but non-significant cross linking by control.

As Dr.Klaus Kohlhammer at " New Airlaid Binders ", NonwovensReport International, in September, 1999, issue 342,20-22, pointed in the 28-31 page or leaf, the dry emulsion binder powders has following advantage, they can be easily introduced in the forming process of thin slice in the thin slice non-woven or air-laid, with described material is put on existing base material on opposite, permission is for helping the bigger control of being distributed with of binder polymer.Therefore, thin slice non-woven or air-laid can have the dry emulsion adhesive already therein after preparation, is got wet when applying ion-sensitive type polymer formulation material solution subsequently, and the dry emulsion powder becomes viscosity and the bonding that helps base material in view of the above.Additionally, described dry emulsion powder can be embedded in base material by filtration mechanism after base material is with ion-sensitive type adhesive treatment and drying, and described dry emulsion powder becomes viscosity after using moisturizing compositions in view of the above.

In another embodiment, described dry emulsion powder is dispersed in the ion-sensitive type polymer formulation material solution by the following method: powder is sprayed on the thin slice as ion-sensitive type polymer formulation material solution or by adding and disperseing described dry emulsion powder particle in ion-sensitive type polymer formulation material solution, described after this mixture is by spraying, being applied on the thin slice by the foams coating method or by other technology known in the prior art.

Binder formulation and the fabric that contains it

Polymer formulation material of the present invention can be used as adhesive.Binder formulation of the present invention can be administered on any fiber base material.Described adhesive is particularly suitable in the water-dispersible product.Suitable fiber base material includes, but not limited to non-woven and woven fabric.In many embodiments, personal care product especially, the woven fabric of preferred substrate right and wrong.Term used herein " supatex fabric " is meant a kind of like this fabric, and it has a kind of structure that each root fiber or long filament are randomly arranged in felted (containing paper) mode.Supatex fabric can be from produced in several ways, and these methods include but not limited to, air-laid method, wet-laying method, hydration entanglement (hydroentangling) method, cut staple napping and adhesive method and solvent spinning method.

Described adhesive composition can be applied on the fiber base material by any known method of application.The appropriate method of applied adhesives material includes, but not limited to printing, spray, electrostatic spraying, coating, exuberant roll gap coating, the metering pressure roller, dipping or by any other technology.The amount of adhesive composition can be measured and be evenly distributed in the fiber base material or unevenly and is distributed in the fiber base material.Described adhesive composition is distributed in the whole fiber base material or it is distributed in many little intensive zones.In most embodiment, the even distribution of adhesive composition is desirable.

For the ease of being applied in the fiber base material, described adhesive is soluble in water, or is dissolved in nonaqueous solvents such as methyl alcohol, ethanol, and in the acetone etc., wherein water is preferred solvent.The amount that is dissolved in the adhesive in the described solvent will change with employed polymer and fabric applications.Ideally, described binder solution contains the adhesive composition solid of about at the most 25 weight %.More desirably, described binder solution contains the adhesive composition solid of the 10-20 weight % that has an appointment, the adhesive composition solid of especially about l2 weight %.Plasticizer, spices, colouring agent, antifoaming agent, bactericide, preservative agent, surfactant, thickener, filler, opacifier, tackifier, antitack agent and similar additive can be introduced in the solution of adhesive component, if necessary.

In case described adhesive composition is applied in the described base material, described base material is dried by any common mode.In case it is dry, when comparing with the TENSILE STRENGTH of the base material of untreated wet-laying or dry-laying, the fiber base material of described bonding demonstrates improved TENSILE STRENGTH, and, when in being placed into soft or hard water, also being stirred with higher multivalent ion concentration, also have the ability " collapse " apace, or disintegration.For example, compare with the baked tensile strength of the base material that is untreated that does not contain adhesive, the baked tensile strength of fiber base material can improve at least 25%.More particularly, compare with the baked tensile strength of the base material that is untreated that does not contain adhesive, the baked tensile strength of fiber base material can improve at least 100%.Even more particularly, compare with the baked tensile strength of the base material that is untreated that does not contain adhesive, the baked tensile strength of fiber base material can improve at least 500%.

Desirable feature of the present invention is, works as existence, and " adding " when the amount of the adhesive composition on the fiber base material that is obtained has been represented the only fraction of weight of whole base material, just can realize the improvement of TENSILE STRENGTH.The amount of " adding " can change according to concrete application; Yet best " add " amount can obtain a kind of fiber base material, and it has integrality in use and disperses apace during stirring in water.For example, the adhesive component about 65 weight % of about 5-of base material gross weight typically.More particularly, adhesive component is the about 35 weight % of about 10-of base material gross weight.Even more particularly, adhesive component is the about 22 weight % of about 17-of base material gross weight.

Supatex fabric of the present invention has good use TENSILE STRENGTH, and ion-trigger.Ideally, for using acrylic ternary copolymer and greater than those formulations of about 1 weight %NaCl, mixture with monovalent ion, those formulations for the acrylic ternary copolymer that uses the azochlorosulfonate acid anion modification, supatex fabric of the present invention is wear-resisting and has kept main TENSILE STRENGTH that in the aqueous solution the described aqueous solution contains the mixture greater than about 0.3 weight %NaCl or monovalent ion.Also have, described supatex fabric can be dispersed in very soft to medium-hard again in the water of high rigidity.Because back one character, supatex fabric of the present invention is suitable for disposable product most, as cotton wool, diaper, adult's urinary incontinence product and paper handkerchief (hygenic towelette) dry and that prewet, they are thrown away in the lavatory of pumping equipment after using Anywhere global.

The fiber that forms above fabric can comprise that natural fabric, synthetic fiber and its combination make from various materials.The selection of fiber depends on, for example, and the final use of being estimated and the fiber cost of finished product fabric.For example, suitable fiber base material can include, but not limited to natural fabric such as cotton, flax, jute, hemp, cashmere, wood pulp or the like.Similarly, the cellulose fibre of regeneration, as viscose silk and bemsilk, modified cellulose fibre is as cellulose acetate, or synthetic fiber, as from polypropylene, polyethylene, other TPO, polyester, polyamide, independent or resulting those fibers that are bonded to each other such as polyacrylic acid can use equally.If desired, also can use one or more blending thing in the above fiber.In the middle of wooden paper pulp fiber, any known paper fibre all can use, and comprises cork and hardwood fiber.Fiber for example can be chemical pulping or mechanical feedback, bleaching or unbleached, original or the recirculation reuse, high pulping or low pulping, or the like.Mercerising is handled, and the toughness reinforcing or crosslinked fiber of chemistry also can use.

Synthetic cellulose fibre type comprises all types of artificial silks and from other fiber that viscose glue or chemically-modified cellulose obtain, comprises the cellulose of regenerated cellulose and solvent spinning, as Lyocell.Can use chemically treated native cellulose fibre, as make the paper pulp that mercerising is handled, the fiber that chemistry is toughness reinforcing or crosslinked, or sulfonation fiber.The fiber of recirculation, and pristine fibre also can both use.Cellulose and other cellulose derivative by microorganisms can both be used.Term used herein " cellulosic " is meant that cellulose as any material of main component and specifically, contains cellulose or the cellulose derivative of at least 50 weight %.Therefore, term comprises cotton, typical wood pulp, non-wooden cellulose fibre, cellulose acetate, cellulose triacetate, artificial silk, the wood pulp of thermomechanometry, the chemical method wood pulp, the chemical wood pulp of unsticking knot, milkweed (milkweed), or bacteriogenic cellulose.Fibre length is important for producing fabric of the present invention.Abandon in the goods as dashing at some examples, fibre length is prior.The minimum length of fiber depends in order to form the fiber base material method selected.For example, when forming fiber base material by the napping method, the length of fiber should be normally at least about 42mm, in order to ensure uniformity.When fiber base material forms by air-laid or wet-laying method.Though the fiber that has greater than the length of 50mm is within the scope of the invention, described ideally fibre length can be about 0.2-6mm, but it has been determined that, when the length that will mainly measure is inserted Ke Chong when abandoning in the fabric greater than the fiber of about 15mm, although fiber dispersion is with separately in water, but their length is tended to form fiber and " is twisted rope ", this be in family's toilet, dash when abandoning undesirable.So.Though the fiber of all lengths all is suitable in the present invention, but for these products, wish that described fibre length is about 15mm or still less, desirable fiber has the length that is lower than about 15mm, to make fiber can not tend to " roping " when abandoning when they are dashed by toilet, fiber scatter when contact water each other easily.Described fiber, especially synthetic fiber also can be wrinkling.

Fabric of the present invention forms with single or multiple lift.For multilayer, these layers usually on the position with and put or face-to-face relation be provided with and these layers in all or part of be bonded in adjacent layer.Nonwoven sheet of the present invention also can be many independent nonwoven sheets form, wherein independent nonwoven sheet can single or multiple lift forms.Comprise under the situation of multilayer at nonwoven sheet that wherein the whole thickness of nonwoven sheet can carry out the adhesive coating or each single layer carries out the adhesive coating forms finished product with combining according to juxtaposition relationship with other layer then nonwoven sheet individually.

In an example, fabric substrate of the present invention can be incorporated into cleaning products and body liquid absorptive product, as cotton wool, diaper, adult-incontinence articles, surgical bandage, flimsy material, hygenic towelette, or the like in.These products can contain absorbent core, and the latter comprises one or more layers absorbent fibrous material.Described core also can contain one or more layers fluid permeability element, as fibr tissue, and tulle, plastic wire, or the like.These can be used as packaging material usually so that the component of core is kept together.In addition, described core can comprise impervious element of fluid or barrier element, to stop fluid by core with on the outer surface of product.Ideally, described barrier element also is a water dispersible.Film with polymer of identical with above-mentioned water-dispersible adhesive basically composition is particularly suitable for this purpose.According to the present invention, described polymer composition can be used for forming each in the said goods assembly, comprising each layer of absorbent core, and the element of fluid penetrable, impervious element of packaging material and fluid or barrier element.

Adhesive formulation of the present invention be used in particular for the boning fiber of supatex fabric of air-laid.The material of these air-laids can be used for various water-dispersible personal care products' bodyside liner, fluid distribution materials, and fluid sucks material, as prominent (surge) material that rises, absorbability wrap sheet and covering blank.The material of air-laid is particularly useful for as the paper handkerchief (hygenic towelette) of prewetting.The basic weight of the nonwoven sheet of air-laid can be about 200 gram/every square metre (" gsm ") of about 20-, has the DENIER of about 0.5-10 and the length of about 6-15 millimeter for cut staple.Prominent rising or the bulkiness of better resilience of imbedibility material require and Geng Gao, the cut staple that therefore has about 6 DENIER or bigger DENIER number is used to make these products.Prominent rise or the required final densities of imbedibility material is between about 0.10g/cc at about 0.025 gram/every cubic centimetre (" g/cc ").Fluid distribution materials can have higher density, and for using than the fiber of low denier about 0.10 in the required scope of about 0.20g/cc, the fiber that needs most has and is lower than about 1.5 DENIER.The fibre density that paper handkerchief has usually is that about 0.025 gram/cubic centimetre arrives about 150gsm to about 0.2 gram/cubic centimetre and basic weight for about 20gsm; The about 90gsm of specifically about 30-and the most specifically, about 60gsm is to about 65gsm.

Supatex fabric of the present invention also can be incorporated into this type of body fluid absorbent articles, as cotton wool, and diaper, surgical bandage is in the flimsy material etc.In an example, described adhesive requires not dissolve when being contacted by body fluid, because the concentration of monovalent ion in body fluid is higher than the needed level of dissolving; Promptly greater than 0.3 weight % and/or greater than 1 weight %.Supatex fabric has kept its structure, softness and demonstrating for the gratifying toughness of practical application.Yet, when with the multivalent ion with about 200ppm at the most (as Ca ²⁺And Mg ²⁺Ion) in the water of concentration when contact,, adhesive can disperse as the adhesive of the acrylic ternary copolymer that contains the azochlorosulfonate acid anion modification.Similarly, when with have be lower than about 10ppm multivalent ion (as Ca ²⁺And Mg ²⁺When ion) water of concentration contacted, the adhesive that contains the acrylic ternary copolymer of azochlorosulfonate acid anion modification can disperse.Described nonwoven fabric structure easily breaks then and is dispersed in the water.

In an example of the present invention, the use TENSILE STRENGTH of supatex fabric is to strengthen by forming supatex fabric with the binding material that contains ion-sensitive type polymer formulation material of the present invention and subsequently one or more monovalencies and/or multivalent salts being put in the supatex fabric.Described salt can be applied in the supatex fabric by those any methods known to the skilled in the prior art field, and described method includes but not limited to: will be ejected on the fabric on the pressed powder paint fabric and with salting liquid.The amount of salt can change with concrete application.Yet, be applied to the salt solid of the about typically 0.1 weight % of amount of the salt in the fabric, based on the gross weight of fabric to about 10 weight %.The fabric of saliferous of the present invention can be used in many fabric applications, comprising but be not limited to women underwear liner, surgical bandage, and diaper.

Technical staff in the prior art field is appreciated that binder formulation of the present invention and fiber base material can be used for the preparation of various products ideally, comprising but be not limited to, be designed the absorbent personal care that contacts with body fluid.This series products can only contain the fiber base material of individual layer, maybe can contain aforesaid each combination of elements body.Though binder formulation of the present invention and fiber base material are particularly suitable for the personal care product, described binder formulation and fiber base material can be used for the various consumer goods ideally.

Compare when using separately with terpolymer, the combination of the acrylic ternary copolymer of acrylic ternary copolymer of the present invention or azochlorosulfonate acid anion modification and noncrosslinking poly-(ethane-acetic acid ethyenyl ester) has obtained improved result.For example, when ion-sensitive type polymer formulation material of the present invention is used for the adhesive composition of hygenic towelette, described hygenic towelette has improved wettability but does not lose dispersiveness for staining for the first time (insult), and this allows paper handkerchief substrate easily to be drenched with practical (commercial) speed by hygenic towelette solution.Ion-sensitive type polymer formulation material of the present invention also reduces the stiffness of dry substrate, the motility (runnability) of improvement sheet material of dry and other fragility in the further conversion process of product, reduce the viscosity of paper handkerchief and/or improve the spray property of ion-sensitive type adhesive, thus improve adhesive in substrate distribution and penetrate.

Different with other known in prior art field adhesive composition, ion-sensitive type polymer formulation material of the present invention can be used as adhesive, and need not to use the temperature of rising.Although dry or dewater and can be used for realizing adhesive well distributed in sheets of fibres, the temperature itself that raises is not crucial, not can be used as adhesive because adhesive does not need to have crosslinked or other chemical reaction of overactivity energy.On the contrary, the interaction with solubility reactive compound (typically being salt) is enough to cause that adhesive becomes activity (insoluble) or " saltouing ".Therefore, if desired, drying steps can be avoided, or substitutes with low temperature water removal operation such as drying at room temperature or freeze drying.The temperature that raises helps drying usually, but dry can carrying out for driving under the low a kind of temperature of the required temperature of cross-linking reaction than normal.Therefore, the peak temperature that base material touched or base material ran into can be to be lower than following any in these: 180 ℃, and 160 ℃, 140 ℃, 120 ℃, 110 ℃, 105 ℃, 100 ℃, 90 ℃, 75 ℃ and 60 ℃, scope for example for the thin slice peak temperature is about 50 ℃ to about 110 ℃, or about 70 ℃ to about 140 ℃.Certainly, can use higher temperature, but in most of examples, be unwanted.Although help the binder polymer system, as the latax that is purchased, also can contain and be suitable for the crosslinking agent that under 160 ℃ or higher temperature, reacts, keep lower peak temperature for preventing that it is useful producing high strength in helping binder polymer, because cross the water dispersible that high strength can hinder pre-hygenic towelette.

The moisturizing compositions of hygenic towelette and the hygenic towelette that contains it

A useful especially embodiment of the present invention is from above-mentioned ion-sensitive type adhesive composition and pre-hygenic towelette of fibrous material production or hygenic towelette.For paper handkerchief, described fibrous material can be the form of weaving or supatex fabric; Yet supatex fabric is better.Described supatex fabric is from than staple fibre ideally, forms as wooden paper pulp fiber.The minimum length of fiber depends in order to form the supatex fabric method selected.Although supatex fabric forms by wet method or dry method, described fibre length is suitably about 0.1 millimeter to 15 millimeters.Ideally, when it did not bond together by adhesive or binding material, supatex fabric of the present invention had lower wet cohesive strength.When this type of supatex fabric is bonded in a time-out by adhesive composition, it loses its adhesion strength in running water and in the water of sewer, and described fabric is dashed easily the stirring that provides is provided is broken and move through described downcomer.

The finished product paper handkerchief can individual packaging, and is suitable to folded state, with the big envelope form of protection against the tide or to have held the container package of any requisite number purpose sheet, these sheet materials carry out water-tight package with the moisturizing compositions that is applied to paper handkerchief.The coiled material that the finished product paper handkerchief also can be used as independent sheet material is packaged in the moisture-proof container, and the latter keeps any requisite number purpose sheet material on reel with the moisturizing compositions that is applied on the paper handkerchief.Reel can be centreless with hollow or solid.The reel of centreless comprises the coiled material that has hollow centre or do not have solid center, can produce with known centreless reel reel machine, comprises SRPIndustry, Inc. (San Jose, CA) those; Shimizu Manufacturing (Japan) and at USP 4,667, disclosed equipment in 890 (on May 26th, 1987 announced, and was issued to Gietman).The centreless reel (rolls) of solid coiling can provide more products for given volume and can adjust by enough various distributors.

With respect to the weight of dry fabric, described ideally paper handkerchief can contain the moisturizing compositions of the 10%-that has an appointment about 400%, more desirably about 100% to about 300% moisturizing compositions and even more desirably about 180% to about 240% moisturizing compositions.The desirable characteristics that has kept it in warehouse-in, transportation, retail display and consumer store in the time that paper handkerchief involves.Therefore, the shelf life can be bimester to two year.

Being used for holding the various impermeable encapsulated member of the wet material of packing such as paper handkerchief and towelette etc. and storing utensil is that the prior art field is known.Any in these can be used for packing pre-hygenic towelette of the present invention.

Ideally, pre-hygenic towelette of the present invention comes wetting with moisture moisturizing compositions, and it has one or more following character:

(1) compatible with above-mentioned ion-sensitive type adhesive composition of the present invention;

(2) can make pre-hygenic towelette in transportation, storage and (the containing distribution) process of use, keep its wet strength, and the dispersiveness in water closet;

(3) do not cause skin irritation;

(4) reduce the viscosity of paper handkerchief and unique tactile properties is provided, slide and " washing lotion shape sense of touch " as skin; With

(5) be used as medium so that produce " cleaning of preserving moisture " and other skin health benefit.

Described moisturizing compositions should and generally not contain other solvent in addition that dewaters as the solvent of adhesive, particularly do not contain organic solvent, though the spices solubilizer such as the polysorbate 20 of a small amount of (＜1%) can exist, and depend on the spices and the salinity of moisturizing compositions.Ideally, based on the gross weight of moisturizing compositions, described moisturizing compositions contains the organic solvent that is lower than about 10 weight %, as propylene glycol or other glycols, polyhydroxy-alcohol or the like.More desirably, described moisturizing compositions contains the organic solvent that is lower than about 4 weight %.Even more desirably, described moisturizing compositions contains the organic solvent that is lower than about 1 weight %.Described moisturizing compositions can be substantially free of organic solvent.

One aspect of the present invention is a moisturizing compositions, and it contains activation and use intensity that compound, the latter keep the water-dispersible adhesive till the activating compounds dilute with water, and in view of the above, the intensity of water-dispersible adhesive falls into a decline.Described water-dispersible adhesive can be any in ion-sensitive type adhesive composition of the present invention or any other ion-sensitive type adhesive composition.Reactive compound in moisturizing compositions can be a salt, as sodium chloride, or any other compound, it uses and stores intensity for the water-dispersible adhesive composition provides, and can in water, dilute, permission is triggered to weak state as the dispersion of the matrix of binder polymer.Ideally, described moisturizing compositions contains the reactive compound that is lower than about 10 weight %, based on the gross weight of moisturizing compositions.Specifically, described moisturizing compositions can contain the reactive compound of 0.3 weight % to about 5 weight % of having an appointment.Even more particularly, described moisturizing compositions can contain the reactive compound of 2 weight % to about 4 weight % of having an appointment.

Moisturizing compositions of the present invention can further contain various additives and the water-dispersible adhesive compatible with reactive compound, as long as the intensity and the Distributed Function of paper handkerchief are without prejudice.Appropriate addn in moisturizing compositions includes, but are not limited to following additive: the skin nursing additive; Odor control agent; Reduce the detackifier of the viscosity of adhesive; Microsome; Antimicrobial; Preservative agent; Wetting agent and cleaning agent such as washing agent, surfactant and some polysiloxanes; Emollient; Improve the surface touch modifier of sense of touch (for example lubricity) on the skin; Spices; Spices solubilizer; Opacifier; Fluorescent bleaches; The UV absorbent; Medicine; With the pH regulator agent, as malic acid or potassium hydroxide.

The skin nursing additive

A kind of additive represented in term used herein " skin nursing additive ", and it provides one or more benefits for the user, the minimizing of the possibility of other skin lesion that causes as diaper rash and/or by excremental enzyme.These enzymes, particularly trypsase, chymotrypsin and elastoser are the proteolytic enzymes that produces in the intestines and stomach of digest food.For the baby, for example, ight soil tend to be many water and also contain bacterium and a certain amount of undegradable digestive ferment with other material.These enzymes, if them and any noticeable a period of time of contact skin, discovery can cause stimulation (itself is uncomfortable) and easily make skin by infected by microbes.As countermeasure, the skin nursing additive comprises, but is not limited to, below with enzyme inhibitor and the sequestering agent described.Described moisturizing compositions can contain the skin nursing additive that is lower than about 5 weight %, based on the gross weight of moisturizing compositions.More particularly, described moisturizing compositions can contain the skin nursing additive of 0.01 weight % to about 2 weight % of having an appointment.Even more particularly, described moisturizing compositions can contain the skin nursing additive of 0.01 weight % to about 0.05 weight % of having an appointment.

Many skin nursing additives can join moisturizing compositions and the present invention or the pre-hygenic towelette that wherein contained in.In one embodiment of the invention, the skin nursing additive of particle form is added as the excreta enzyme inhibitor, and potential benefit is provided in the minimizing of diaper rash that is caused by the excreta enzyme and skin injury.USP6,051,749 (on April 18th, 2000 was issued to people such as Schulz, and its full content is hereby incorporated by reference) discloses the close organic clay in weaving or nonwoven sheet, allegedly can be used for suppressing excremental enzyme.This type of material can be used among the present invention, comprises one or more the product in long-chain quaternary organic ammonium compounds and the following clay: imvite, bentonite, beidellite, hectorite, saponite, and humite.

Enzyme inhibitor that other is known and sequestering agent can be used as the skin nursing additive in the moisturizing compositions of the present invention, comprising suppressing trypsase and other digestion or those inhibitor of excreta enzyme and the inhibitor of urease.For example, enzyme inhibitor and antimicrobial can be used to prevent the formation of smell in the body fluid.For example, urease inhibitor, it is also allegedly played a role in odor adsorption, be disclosed in world patent application No.98/26808 by T.Trinh, " Absorbent Articles withOdor Control System ", on June 25th, 1998 published, and its full content is hereby incorporated by reference.This type of inhibitor can be incorporated in moisturizing compositions of the present invention and the pre-hygenic towelette and contain transition metal ions and their soluble-salt, as silver, and copper, zinc, iron and aluminium salt.The enzyme inhibition of also can supplying urea of described anion, as borate, phytic acid root or the like.There is the compound of potential value to include, but not limited to silver chlorate, silver nitrate, mercurous acetate, mercury chloride, mercuric nitrate, copper metaborate, bromic acid copper, copper bromide, copper chloride, cupric bichromate, copper nitrate, Cupric salicylate, copper sulphate, zinc acetate, Firebrake ZB, phytic acid zinc, zinc bromate, zinc bromide, zinc chlorate, zinc chloride, zinc sulfate, cadmium acetate, cadmium borate, cadmium bromide, cadmium chlorate, caddy, formic acid cadmium, caomium iodate, cadmium iodide, cadmium permanganate, cadmium nitrate, cadmium sulfate, and chlorauride.

Be disclosed as other salt and comprise iron and aluminium salt, especially nitrate and bismuth salt with urease inhibition activity.Other urease inhibitor is open by Trinh, comprising hydroxamic acid and its derivative; Thiocarbamide; Azanol; The salt of phytic acid; The extract of the plant of various kinds comprises various tannins, for example carob tannic acid and their derivative such as chlorogenic acid derivative; Natural acid such as ascorbic acid, citric acid and their salt; Phenyl phosphoryl diamine/diaminourea phosphoric acid phenylester; Metal aryl phosphamide compound comprises the replacement phosphordiamidite compounds; The phosphamide that on nitrogen, does not replace; Boric acid and/or its salt especially comprise, borax, and/or organic boronic compound; Disclosed compound in european patent application 408,199; Sodium, copper, manganese, and/or the dithiocar-bamate of zinc; Quinones; Phenols; Thiuram; Substituted rhodanine acetate; The alkylation benzoquinones; Formarnidine disulphide; 1:3-diketone maleic anhydride; Succinamide; Phthalic anhydride; Mountain Yu acid (pehenic acid); / N, N-dihalo--2-imidazolone type (imidazolidinones); N-halogen-2-oxazoline ketone (oxazolidinones); Sulfo-and/or acyl group phosphoric triamide, and/or their substitutive derivative, sulfo-pyridine-N-oxides, sulfo-pyridine and sulfo-pyrimidine; The sulfur derivatives of the oxidation of diaminourea phosphinyl compound; The cyclotriphosphazatriene derivative; The adjacent diaminourea phosphinyl derivative of oxime; The bromo-nitro compound; S-aryl and/or alkyl diamide complexes base phosphinylidyne thiol ester (diamidophosphorothiolates); Diaminourea phosphinyl derivative; Single and/or many phosphoryl diamine; 5-replacement-benzoxathiol-2-ketone; N (diaminourea phosphinyl) aryl carboxylic acid amides; Alkoxyl-1, the 2-benzothaizin compound; Or the like.

Many other skin nursing additives can be incorporated in moisturizing compositions of the present invention and the pre-hygenic towelette, include but not limited to opacifier and UV absorbent, the acne finishing agent, medicine, sodium bicarbonate (microcapsules that contains it), vitamins and their derivative such as vitamin A or E, botanical such as witch hazel extract and aloe leachate, allantoin, emollient, disinfectant, the alkyd that is used for wrinkle control or anti-aging effect, sun-screening agent, deliquescing (tanning) promoter, skin whitener, deodorant and anti-perspirant, the ceramide that helps skin and other benefit, astringent is mended humectant, nail polish remover, pest repellant, antioxidant, preservative agent, antiphlogistic or the like, precondition is that described additive is compatible with ion-sensitive type adhesive composition especially of the present invention with relevant ion-sensitive type adhesive composition (that is before, in being diluted to water, they can not cause the greater loss of intensity under the hygrometric state of pre-hygenic towelette, allow the dispersiveness in water simultaneously).

The utility of skin nursing and other use is listed in 1999 2 volumes of McCutcheon: Functional Materials, MC Publishing Company, Glen Rock, NJ.The many useful botanical of skin nursing can be by Active Organics, Lewisville, and Texas provides.

Smell control additive

The suitable smell control additive that is used for moisturizing compositions of the present invention and pre-hygenic towelette comprises, but is not limited to zinc salt; Talcum powder; The spices of sealing (contain microcapsules, big wafer and be encapsulated in spices in liposome, vessicles or the microemulsion); Chelating agent is as ethylenediamine tetra-acetic acid; Zeolites; Activated silica, active carbon pellet or fiber; The activated silica particulate; Polycarboxylic acid is as citric acid; Cyclodextrin and cyclodextrine derivatives; Chitosan or chitin and their derivative; Oxidant; Antimicrobial contains and has supported silver-colored zeolites (for example, by being positioned at Beverly, the BF Technologies company of Massachusetts is with trade mark HEALTHSHIELD ^TMThose products of selling); Triclosan (triclosan); Diatomite; With their mixture.Except the smell of control from health or bodily waste, the smell control strategy can also be used to shield or control any smell of processed base material.Ideally, described moisturizing compositions can contain the smell control additive that is lower than about 5 weight %, based on the gross weight of moisturizing compositions.More desirably, described moisturizing compositions can contain the smell control additive of 0.01 weight % to about 2 weight % of having an appointment.Even more desirably, described moisturizing compositions can contain the smell control additive of 0.03 weight % to about 1 weight % of having an appointment.

In one embodiment of the invention, moisturizing compositions and/or pre-hygenic towelette contain the cyclodextrin of derivatization, and as the hydroxypropyl in solution, it is retained on the skin after wiping and the odor adsorption layer is provided.In other example, odor source is by applying smell control additive and be removed or neutralizing, and for example by means of chelating agent, it combines the needed metal group of function for the many proteases that usually produce smell and other enzyme.The effect and the smelly danger of minimizing product nausea of the described metal group meeting of chelating interferases.

The people such as former reason S.Lee that chitosan or chitin derivatives are applied to nonwoven sheet and cellulose fibre are described in " Antimicrobial and Blood Repellent Finishes forCotton and Nonwoven Fabrics Based on Chitosan and Fluoropolymers ", Textile Research Journal, 69 (2); 104-112, in February, 1999.

Detackifier

Although the salinity that raises can reduce the viscosity of ion-sensitive type adhesive, the alternate manner that viscosity reduces usually is desirable.Therefore, detackifier can be used in the moisturizing compositions to reduce the viscosity of described ion-sensitive type adhesive, if necessary.Suitable detackifier contains in the prior art field known being reduced in the adhesive shaped polymer maybe can reduce viscosity between two adjacent fiber sheets that any mass treatment of the viscosity sense of touch of adhesive shaped polymer on the skin is crossed.Detackifier can be as the solid particle of dried forms, is applied as suspension or as the slurry of particle.Deposition can be by spraying, coating, static is long-pending attached, impact, filtering (that is, pressure differential load the gas phase of particle by base material, by filtration mechanism deposited particles thing) or the like realizes, with put on the part of substrate surface on one or more surfaces that can put on base material equably or with pattern (for example, repeat or random patterns).Described detackifier can exist on the thickness of whole base material, but concentrates on one or two surface, and mainly only exists on one or two surface of base material.

Specific detackifier includes, but not limited to powder, as talcum powder, and calcium carbonate, mica; Starch is as cornstarch; Lycopodium powder; Mineral filler is as titanium dioxide; Silica flour; Aluminium oxide; Common metal oxide; Bake powder (baking powder); Diatomite; Or the like.Polymer and other additive with low-surface-energy also can use, comprising various fluorinated polymers, polysiloxane additives, TPO and thermoplastic, wax, known detackifier in paper industry comprises compound with alkyl side chain as having 16 or those compounds of carbon atom more, or the like.Be used as the compound of the releasing agent of mould and candle manufacturing, and dry lubricant can be considered also with the releasing agent of fluoridizing.

In one embodiment, described detackifier contains polytetrafluoroethylene (PTFE), as by Miller-Stephenson (Danbury, CT) the PTFE telomer (KRYTOX that is used for PTFE releasing agent dry lubricant MS-122DF that sells as spray product ^DF) compound.For example, the PTFE particle can be applied on the side of base material by spraying before the coiling of pre-hygenic towelette.In one embodiment, before the coiling coil paper, detackifier only is administered on the surface of base material.

Ideally, described moisturizing compositions can contain the detackifier that is lower than about 25 weight %, based on the gross weight of moisturizing compositions.More desirably, described moisturizing compositions contains the 0.01 weight % that has an appointment to the detackifier of about 10 weight %, and more particularly about 5% or still less.Even more specifically, described moisturizing compositions can contain the detackifier of 0.05 weight % to about 2 weight % of having an appointment.

Except being used as detackifier, starch compound also can improve the intensity property of pre-hygenic towelette.For example, have been found that, the starch granules of gelling not, as the hydrophily tapioca, when when existing, can allow the same intensity of pre-hygenic towelette maintenance under than the lower salinity of possible the situation that does not have starch to exist with respect to about 1 weight % of the weight of moisturizing compositions or the level more than the 1 weight %.Therefore, for example, the level of needed 4% salt contrast when not having starch, 2% salt that given intensity can be used in the presence of salt in the moisturizing compositions is realized.Starch can be by using in the suspension that starch is joined LAPONITE, to improve the dispersiveness of starch in moisturizing compositions.

The microparticle thing

Moisturizing compositions of the present invention can the further modification by adding solid particle or microparticle thing.Suitable particle includes, but not limited to mica, silica, aluminium oxide, calcium carbonate, kaolin, talcum, and zeolites.Described particle can be with stearic acid or other additive treating, to strengthen attraction or the bridge joint of particle to adhesive composition, if necessary.Simultaneously, the bi-component microparticle objects system that is used as retention agent usually in paper industry also can use.This type of bi-component microparticle objects system contains the colloidal particles phase usually, as silica microparticle be used for particle is bridged to water-soluble cationic polymer on the fiber of formed thin slice.The existence of particle in moisturizing compositions can play a part one or more useful, increases the opacity of pre-hygenic towelette as (1); (2) rheological equationm of state of the described pre-hygenic towelette of modification or reduce its viscosity; (3) tactile properties of improvement paper handkerchief; Or (4) carry required reagent to skin through pelleted substrate such as porous carrier or microcapsules.Ideally, described moisturizing compositions can contain the particle that is lower than about 25 weight %, based on the gross weight of moisturizing compositions.More particularly, described moisturizing compositions can contain the particulate matter of 0.05 weight % to about 10 weight % of having an appointment.Even more particularly, described moisturizing compositions can contain the particulate matter of 0.1 weight % to about 5 weight % of having an appointment.

Microcapsules and other are carried medium

Microcapsules and other carry medium also to can be used for moisturizing compositions of the present invention so that skin conditioner to be provided; Medicine; Comfortable promoting agent is as the eucalyptus plant extracts; Spices; Skin conditioner; Smell control additive; Vitamins; The powder thing; And other additive of user's skin.Specifically, described moisturizing compositions can contain microcapsules or other conveying medium of about at the most 25 weight %, based on the gross weight of moisturizing compositions.More particularly, described moisturizing compositions can contain microcapsules or other the conveying medium of 0.05 weight % to about 10 weight % of having an appointment.Even more particularly, described moisturizing compositions can contain microcapsules or other the conveying medium of 0.2 weight % to about 5.0 weight % of having an appointment.

It is to be well known in the prior art field that microcapsules and other are carried medium.For example, POLY-PORE ^(Chemdal Corp., Arlington Heights IL), are to contain agent delivery soft, hollow spheres to E200, and described spheroid contains carries the additive of medium weight more than 10 times.It is reported and POLY-PORE ^The known additives that E200 uses together includes, but not limited to benzoyl peroxide, salicylic acid, retinol, retinyl palmitate, methoxy cinnamic acid octyl group ester, tocopherol, polysiloxane compound (DC435), and mineral oil.Another useful conveying medium is with POLY-PORE ^The spongy material that L200 sells, it it is reported uses with polysiloxanes (DC 435) and mineral oil.Other known delivery system comprises cyclodextrin and their derivative, liposome, polymeric sponge and spray-dired starch.

The additive that is present in the microcapsules separates with other reagent with environment in the moisturizing compositions, and till paper handkerchief was applied on the skin, microcapsules broke and the loaded article of carrying it to skin or on other surface in view of the above.

Preservative agent and antimicrobial

Moisturizing compositions of the present invention also can contain preservative agent and/or antimicrobial.Several preservative agents and/or antimicrobial as Mackstat H 66 (can be from McIntyre Group, Chicago, IL is purchased), have been found that preventing to obtain good effect on bacterium and the fungus growth.Preservative agent that other is suitable and antimicrobial include, but are not limited to DMDM hydantoins (for example, Glydant Plus ^TM, Lonza, Inc., Fair Lawn, NJ), butyl carbamic acid iodine propinyl ester, Kathon (Rohm andHass, Philadelphia, PA), and methyl p-hydroxybenzoate, Nipasol, 2-bromo-2-nitropropane-1, the 3-glycol, benzoic acid, or the like.Ideally, described moisturizing compositions contains preservative agent and/or the antimicrobial that is lower than about 2 weight % (pressing active group), based on the gross weight of moisturizing compositions.More desirably, described moisturizing compositions can contain preservative agent and/or the antimicrobial of 0.01 weight % to about 1 weight % of having an appointment.Even more desirably, described moisturizing compositions can contain preservative agent and/or the antimicrobial of 0.01 weight % to about 0.5 weight % of having an appointment.

Wetting agent and cleaning agent

Various wetting agents and/or cleaning agent can be used for moisturizing compositions of the present invention.Suitable wetting agent and/or cleaning agent include, but not limited to washing agent and nonionic, both sexes and anion surfactant, especially amino acid type surfactant.Compare with other anion surfactant, the amino acid type surfactant system, as deriving those from amino acids L-glutamic acid and other natural acid, provide and the pH compatibility of application on human skin and good cleansing power, be simultaneously comparison safety and improved sense of touch and humidifying performance be provided.A function of surfactant is to improve the wetting effect of dry substrate with moisturizing compositions.Another function of surfactant is can disperse the bathroom dirt when pre-hygenic towelette contact dirt zone, and strengthens the absorbability that their (dirts) enter into base material.Described surfactant can further assist in cosmetics and remove stage makeup and costume, general personal cleanliness, and stiff dough cleans, smell control, or the like.

A kind of examples of commercial of amino acid type surfactant is the acyl glutamate of being sold with trade name Amisoft by Ajinomoto company (Tokyo).Ideally, described moisturizing compositions contains wetting agent and/or the cleaning agent that is lower than about 3 weight %, based on the gross weight of moisturizing compositions.More desirably, described moisturizing compositions can contain wetting agent and/or the cleaning agent of 0.01 weight % to about 2 weight % of having an appointment.Even more desirably, described moisturizing compositions can contain wetting agent and/or the cleaning agent of 0.1 weight % to about 0.5 weight % of having an appointment.

Though amino acid type surfactant is particularly useful for moisturizing compositions of the present invention, various surfactants can be used for the present invention.Suitable nonionic surface active agent includes, but not limited to oxirane and condensation product by the formed hydrophobicity of the condensation of expoxy propane and propylene glycol (lipophilicity) polyoxyalkylene base-material.The hydrophobic parts of these compounds has sufficiently high molecular weight, so that it has water-insoluble.The liquid attribute that the polyethylene glycol oxide structure division adds to the water-soluble and product that will improve the branch subpopulation on this hydrophobic parts is held a kind of like this degree, under described degree polyethylene glycol oxide content be condensation product gross weight about 50%.The example of the compound of this type comprises the Pluronic surfactant (BASF Wyandotte Corp.) that is purchased, especially wherein polypropylene oxide ether has those of the molecular weight of about 1500-3000 and about 35-55% that polyethylene glycol oxide content is described molecular wt, i.e. Pluronic L-62.

Other useful nonionic surface active agent includes, but not limited to C ₈-C ₂₂The condensation product of the oxirane of alkyl alcohols and 2-50 mole/every mol of alcohol.The example of the compound of this type comprises C ₁₁-C ₁₅The condensation product of secondary alkyl alcohols and 3-50 moles of ethylene oxide/every mol of alcohol, it can be used as Poly-Tergent SLF series from Olin Chemicals company or as TERGITOL ^Series is TERGITOL ^(it is by about 7 moles oxirane and C to 25-L-7 ₁₂-C ₁₅The alkanol condensation forms) be purchased from Union Carbide company.

Other nonionic surface active agent that can be used in the moisturizing compositions of the present invention comprises C ₆-C ₁₂Alkyl phenol is as the ethylene oxide ester class of (Nonylphenoxy) polyoxyethylene ether.Useful especially is oxirane and the prepared ester class of nonyl phenol condensation, i.e. IGEPAL with about 8-12 mole ^CO series (GAF Corp.).

Other ionic surfactant pack is drawn together, but is not limited to, as the condensation product of glucose (D-glucose) and straight or branched alcohol and the alkyl poly glucoside (APG) that derives.The glucosides of surfactant partly provides the hydrophilic section with high hydroxy density, and it strengthens water-soluble.In addition, the inherent stability of the acetal key of glucosides provides the chemical stability in alkaline system.In addition, different with some non-ionic surface active agents, alkyl poly glucoside does not have cloud point, make to need not the hydrotropic agent design of just can filling a prescription, and these be non-normal temperature and and easy biodegradable nonionic surface active agent.The surfactant of this type can be from Horizon Chemical with trade name APG-300, APG-350, and APG-500 and APG-500 obtain.

Polysiloxane-based is with respective pure form, or as microemulsion, the another kind of wetting agent that thick emulsion etc. obtain.A kind of nonionic surface active agent group of giving an example is silicone-glycol (silicone-glycol) copolymer.These surfactants can prepare on the free hydroxyl group that (rudimentary) alkylene oxide chain adds to the dimethyl polysiloxane alcohols and can obtain as Dow Corning190 and 193 surfactants (the CTFA title: dimethicone copolyol is the dimethyl silicone copolymer polyalcohol) from Dow Corning Corp by gathering.These surfactants, have or without any volatile silicone as solvent, be used to control the foam that produces by other surfactant and also be metal, pottery and glass surface increase light.

Anion surfactant also can be used for moisturizing compositions of the present invention.Owing to their high detergency become useful anion surfactant and the contain anionic detergent salt of alkyl substituent with 8-22 carbon atom, as water miscible higher fatty acids alkali metal soap, for example, Sodium myristate and sodium palmitate.The anion surfactant of preferred type comprises the water-soluble sulphation that contains hydrophobicity senior alkyl structure division (typically containing 8-22 the carbon atom of having an appointment) and the anionic alkali metal and the alkaline-earth metal washing agent salt of sulfonation, as senior alkyl list or the multinuclear arylsulphonate that has about 1-16 carbon atom in alkyl, example is to be that Bio-Soft D-40 (StepanChemical Co.) obtains as Bio-Soft series.

The anion surfactant of the kind that other is useful includes, but not limited to the alkali metal salt (methyl naphthalene sulfonic acid sodium, Petro AA, Petrochemical company) of alkyl naphthalene sulfonic acid; The single higher fatty acids glyceride of sulphation is as the sylvite of the sulphated monoglycerides of the sodium salt of the sulphated monoglycerides of coco-nut oil fatty acid and tallow fatty acid; The alkali metal salt (for example lauryl sodium sulfate and sodium stearyl sulfate) that contains the sulfated fatty alcohol of 10-18 the carbon atom of having an appointment; C ₁₄-C ₁₆-alpha-olefin sodium sulfonate is as Bio-Terge series (Stepan Chemical Co.); The alkali metal salt of sulphation ethylene oxide fatty alcohol (about 3 moles of ethylene oxide and C ₁₂-C ₁₅The sodium sulphate of the condensation product of n-alkanols or ammonium salt, i.e. theNeodol ethoxysulfates, Shell Chemical Co.); The alkali metal salt of the senior fatty ester of low molecular weight alkyl alcohol sulfonic acid, the fatty acid ester of the sodium salt of different thionic acid for example, the glycollic amide sulfate of fat; The fatty acid amide of aminoalkyl sulfonic acid, for example lauric amide of taurine; And many other anion organic surface active agents, as sodium xylene sulfonate, sodium naphthalene sulfonate, toluenesulfonic acid sodium salt and their mixture.

The anion surfactant of the kind that other is useful comprises 8-(the positive alkyl of 4--2-cyclohexenyl group)-sad, and wherein the cyclohexene basic ring is replaced by additional hydroxy-acid group.These compounds or their sylvite can obtain as Diacid 1550 or H-240 from Westvaco company.Usually, these anionic surfactant can be with their alkali metal salt, and ammonium or alkaline-earth metal salt form use.

The thick emulsion and the microemulsion of polysiloxane particle

Described moisturizing compositions can further contain the water microemulsion of polysiloxane particle.For example, USP6,037,407, " Process for the Preparation of Aqueous Emulsions ofSilicone Oils and/or Gums and/or Resins " announced, and disclosed the organopolysiloxane in the microemulsion in water on March 14th, 2000.Ideally, described moisturizing compositions contains the microemulsion of the polysiloxane particle that is lower than about 5 weight %, based on the gross weight of moisturizing compositions.More desirably, described moisturizing compositions contains the microemulsion of 0.02 weight % to the polysiloxane particle of about 3 weight % of having an appointment.Even more desirably, described moisturizing compositions contains the microemulsion of 0.02 weight % to the polysiloxane particle of about 0.5 weight % of having an appointment.

Polysiloxane emulsion generally can be applied in the pre-hygenic towelette by any known coating method.For example, pre-hygenic towelette can be got wet with the waterborne compositions of the polysiloxanes type component that contains water-dispersible or water miscibility (reactive compound in it and the moisturizing compositions is compatible).In addition, described paper handkerchief can contain the nonwoven sheet of the fiber with water-dispersible adhesive, and wherein thin slice is got wet with the washing lotion that contains polysiloxane type sulfosuccinate.The surfactant that described polysiloxanes type sulfosuccinate need not high-load just can provide gentle and effective the cleaning.In addition, polysiloxanes type sulfosuccinate provides the solubilising function, and it prevents oil-soluble constitents such as perfume composition, vitamin extract, the precipitation of plant extracts and volatile oil.

In one embodiment of the invention, described moisturizing compositions contains polysiloxane copolymer polyalcohol sulfosuccinate, as dimethyl silicone copolymer polyalcohol disodium sulfosuccinate and dimethyl silicone copolymer polyalcohol sulfosuccinic acid two ammoniums.Ideally, described moisturizing compositions contains the polysiloxanes type sulfosuccinate that is lower than about 2 weight % and the more desirably about 0.05 weight % polysiloxanes type sulfosuccinate to 0.3 weight %.

In another example of the product that contains polysiloxane emulsion, Dow Corning 9506 powder also can be present in described moisturizing compositions.Dow Corning 9506 powder are considered to contain dimethicone/vinyl-dimethyl polysiloxanes interpretation and are spherical powders, allegedly can be used for controlling skin oils (referring to " New Chemical Perspectives ", Soap and Cosmetics, 76 volumes, No.3, in March, 2000,12 pages).Therefore, the water-dispersible paper handkerchief, it carries the effectively powder of control skin oils, also within the scope of the invention.The principle of preparation polysiloxane emulsion is disclosed in WO97/10100, and on March 20th, 1997 published.

Emollient

Moisturizing compositions of the present invention also can contain one or more emollients.Suitable emollients includes, but not limited to PEG 75 lanolin, gluceth 20 benzoic acid methyl ester, benzoic acid C ₁₂-C ₁₅Arrcostab, the ethoxylation inhibitor or mild non-ionic detergent, with Lambent wax WS-L, Lambent WD-F, Cetiol HE (Henkel Corp.), Glucam P20 (Amerchol), Polyox WSR N-10 (UnionCarbide), Polyox WSR N-3000 (Union Carbide), Luviquat (BASF), Finsolv SLB101 (Finetex Corp.), ermine oil, allantoin, stearyl alcohol, Estol 1517 (Unichema) and Finsolv SLB 201 (Finetex Corp.) product sold.

Emollient also can be applied on the surface of goods before or after wetting with moisturizing compositions.This type of emollient is insoluble in the moisturizing compositions and can fixes, unless do the time spent when being subjected to external force.For example, vaseline type emollient can put on the surface in the pattern mode, and another surface is wetted with saturated described paper handkerchief after this.This type of product can provide clean surface and opposite skin treatment surface.

Cosmetic composition in this series products of the present invention and other products can contain plasticity or fluid emollient, as one or more liquid hydrocarbons (for example, vaseline), mineral wet goods, plant and animal fat (for example, lanolin, phospholipid and their derivative) and/or silicone materials, as the polysiloxane polymer of one or more alkyl replacements, comprise and be disclosed in USP5, silicone emollients in 891,126 (being issued to Osborn, III etc. on April 6th, 1999).Randomly, the hydrophilic surfactant active can combine with the plasticity emollient, improves the wettability of coated surfaces.In examples more of the present invention, can consider, the polysiloxane polymer that liquid hydrocarbon emollient and/or alkyl replace can with one or more from aliphatic acid or the emollient blending of fatty alcohol derived fatty acid ester or combine.

In an example of the present invention, described emollient material presents emollient blend form.Ideally, described emollient blend contains one or more liquid hydrocarbons (for example, vaseline), the mineral wet goods, plant and animal fat (for example, lanolin, the derivative of phospholipid and they), the combination of the polysiloxane polymer that replaces with silicone materials such as one or more alkyl.More desirably, described emollient blend contains liquid hydrocarbon (for example, vaseline) and dimethicone or the combination of the polysiloxane polymer that replaces with dimethicone and other alkyl.In examples more of the present invention, can consider, the blend of the polysiloxane polymer class that liquid hydrocarbon emollient class and/or alkyl replace can be further with one or more from aliphatic acid or the blending of fatty alcohol derived fatty acid ester emollient.Fatty acid distribution of coconut oil PEG-7 glyceryl ester, (Henkel Corp., Hoboken N.J) is purchased, and also can consider as Standamul HE.

Water-soluble, the self-emulsifying emollient oil that can be used in the moisturizing compositions of the present invention comprise polyoxy alkoxylate lanolin and polyoxy alkoxy fatty alcohols, and be as at USP4, disclosed in 690,821 (being issued to people such as Smith on September 1st, 1987).Suitable propylidene oxygen base and the ethyleneoxy group unit that contains mixing of described polyoxy oxyalkyl chain.Described lanolin derivative typically contains this type of lower alkoxy unit of 20-70 of having an appointment, and C ₁₂-C ₂₀-fatty alcohol is with the low alkyl group unit of about 8-15 derivatization in addition.A kind of this type of useful lanolin derivative be Lanexol AWS (PPG12-PEG-50, Croda, Inc., New York, N.Y.).Useful poly-(15-20) C ₂-C ₃-alcoxylates is PPG-5-Ceteth-20, be known as Procetyl AWS (Croda, Inc.).

According to an example of the present invention, described emollient materials has reduced the undesirable tactile properties of moisturizing compositions, if any.For example, emollient materials comprises dimethicone, can reduce the level of the viscosity that is caused by the ion-sensitive type adhesive in the moisturizing compositions or other component, therefore can be used as detackifier.

Ideally, described moisturizing compositions contains the emollient that is lower than about 25 weight %, based on the gross weight of moisturizing compositions.More particularly, described moisturizing compositions can contain the emollient that is lower than about 5 weight % and the most specifically be lower than about 2% emollient.More desirably, described moisturizing compositions can contain the emollient of 0.01 weight % to about 8 weight % of having an appointment.Even more desirably, described moisturizing compositions can contain the emollient of 0.2 weight % to about 2 weight % of having an appointment.

In one embodiment, moisturizing compositions of the present invention and/or pre-hygenic towelette contain emulsion oil-in-water, the latter is contained and is dispersed in containing of aqueous phase at least a emollient oil and the oil phase of at least a emollient waxes stabilizing agent, described water contains at least a polyalcohol emollient and at least a organic water-soluble washing agent, as at USP4,559,157 (announced on December 17th, 1985, be issued to people such as Smitl, its full content is introduced into for reference) in disclosed.

Surface touch modifier

Surface touch modifier is used for improving the sense of touch (for example, lubricity) at product use skin.The detackifier that suitable surface touch modifier includes, but not limited to be purchased; And softening agent, the softening agent as using in the prior art field of flimsy material manufacturing contains the quaternary ammonium compound with aliphatic acid side group, polysiloxanes, wax etc.The quaternary ammonium compound of character for example that can be used as softening agent is disclosed in USP3, is issued to people such as Hervey on January 12nd, 554,862,1971; USP4, on March 13rd, 144,122,1979 was issued to people such as Emanuelsson, and USP5 was issued to people such as Ampulski on November 12nd, 573,637,1996; And USP4, on October 9th, 476,323,1984 was issued to people such as Hellsten, and the content of all these patents is hereby incorporated by reference.Ideally, described moisturizing compositions contains the surface touch modifier that is lower than about 2 weight %, based on the gross weight of moisturizing compositions.More desirably, described moisturizing compositions can contain the surface touch modifier of 0.01 weight % to about 1 weight % of having an appointment.Even more desirably, described moisturizing compositions can contain the surface touch modifier of 0.001 weight % to about 0.05 weight % of having an appointment.

Spices

Many spices can be used for moisturizing compositions of the present invention.Ideally, described moisturizing compositions contains the spices that is lower than about 2 weight %, based on the gross weight of moisturizing compositions.More desirably, described moisturizing compositions can contain the spices of 0.01 weight % to about 1 weight % of having an appointment.Even more desirably, described moisturizing compositions can contain the spices of 0.01 weight % to about 0.05 weight % of having an appointment.

Spices solubilizer

In addition, many spices solubilizer can be used for moisturizing compositions of the present invention.Suitable spices solubilizer comprises, but be not limited to, polysorbate 20 (polysorbate 20), propylene glycol, ethanol, isopropyl alcohol, diethylene glycol monoethyl ether, dipropylene glycol, diethyl phthalate, triethyl citrate, Amcroxol OE-2 (Amcrchol Corp.), Brij 78 and Brij 98 (ICI surfactant), Arlasolve 200 (ICI surfactant), Calfax 16L-35 (Pilot Chemical Co.), CapmulPOE-S (Abitec Corp.), Finsolv SUBSTANTIAL (Finetex) etc.Ideally, described moisturizing compositions contains the spices solubilizer that is lower than about 2 weight %, based on the gross weight of moisturizing compositions.More desirably, described moisturizing compositions can contain the spices solubilizer of 0.01 weight % to about 1 weight % of having an appointment.Even more desirably, described moisturizing compositions can contain the spices solubilizer of 0.01 weight % to about 0.05 weight % of having an appointment.

Opacifier

Suitable opacifier includes, but not limited to titanium dioxide or other mineral or pigment and synthetic opacifier such as REACTOPAQUE ^Particle (can be from Sequa Chemicals, Inc., Chester, South Carolina is purchased).Ideally, described moisturizing compositions contains the opacifier that is lower than about 2 weight %, based on the gross weight of moisturizing compositions.More desirably, described moisturizing compositions can contain the opacifier of 0.01 weight % to about 1 weight % of having an appointment.Even more desirably, described moisturizing compositions can contain the opacifier of 0.01 weight % to about 0.05 weight % of having an appointment.

The pH regulator agent

The suitable pH regulator agent that is used for moisturizing compositions of the present invention includes, but not limited to malic acid, citric acid, and hydrochloric acid, acetate, NaOH, potassium hydroxide, or the like.Suitable pH scope can farthest reduce the amount of the skin irritation that the moisturizing compositions from the skin produces.Ideally, the pH scope of moisturizing compositions is about 3.5 to about 6.5.More desirably, the pH scope of moisturizing compositions is about 4 to about 6.Ideally, described moisturizing compositions contains the pH regulator agent that is lower than about 2 weight %, based on the gross weight of moisturizing compositions.More desirably, described moisturizing compositions can contain the pH regulator agent of 0.01 weight % to about 1 weight % of having an appointment.Even more desirably, described moisturizing compositions can contain the pH regulator agent of 0.01 weight % to about 0.05 weight % of having an appointment.

Though the formed many moisturizing compositions of one or more from said components can be used for hygenic towelette of the present invention, but in one embodiment, described moisturizing compositions contains following component, percetage by weight by moisturizing compositions provides, as shown in following table 2:

Each component of table 2. moisturizing compositions

The moisturizing compositions component:	Percetage by weight:
		Deionized water	About 86 to about 98
Reactive compound	About 1 to about 6
		Preservative agent	About at the most 2
Surfactant	About at the most 2
		Polysiloxane emulsion	About at the most 1
Emollient	About at the most 1
		Spices	About at the most 0.3
Spices solubilizer	About at the most 0.5
		The pH regulator agent	About at the most 0.2

In another example of the present invention, described moisturizing compositions contains following component, provide by the percetage by weight of moisturizing compositions, as shown in following table 3:

Each component of table 3. moisturizing compositions

The kind of moisturizing compositions component:	Specific moisturizing compositions component:	The component title:	Percetage by weight:
				Medium	Deionized water		About 86 to about 98
Reactive compound	Sodium chloride (Millport Ent., Milwaukee, WI)		About 1 to about 6
				Preservative agent	Glycerine, IPBC and DMDM hydantoins	Mackstat H-66 (McIntyre Group， Chicago，IL)	About at the most 2
Surfactant	Acyl glutamate	CS22(Ajinomoto， Tokyo，Japan)	About at the most 2
				Polysiloxane emulsion (detackifier/skin feel modifier)	Dimethiconol and TEA dodecyl benzene sulfonate	DC1785(Dow Corning，Midland， MI)	About at the most 1
Emollient	PEG-75 lanolin	Solulan L-575 (Amerchol， Middlesex，NJ)	About at the most 1
				Spices	Spices	Dragoco	0/708768 (Dragoco， Roseville，MN)	About at the most 0.3
Spices solubilizer	Polysorbate 20 (Polysorbate 20)	Glennsurf L20 (Glenn Corp.，St. Paul，MN)	About at the most 0.5
				The pH regulator agent	Malic acid transfer to pH 5 (Haarman ﹠ Reimer, Tetrboro, NJ)		About at the most 0.2

In another example of the present invention, described moisturizing compositions contains following component, provide by the percetage by weight of moisturizing compositions, as shown in following table 4:

The moisturizing compositions that table 4. is given an example

The kind of moisturizing compositions component:	Specific moisturizing compositions component:	The component title:	Percetage by weight:
				Medium	Deionized water		About 93
Reactive compound	Sodium chloride		About 4
				Preservative agent	Glycerine, IPBC and DMDM hydantoins	Mackstat H-66	About 1
Surfactant	Acyl glutamate	CS22/HCS 22P	About 1
				Polysiloxane emulsion	Dimethiconol and TEA	DC1784/DC1785	About 0.5
	Dodecyl benzene sulfonate
				Emollient	PEG-75 lanolin	Solulan L-575	About 0.25
Spices	Spices	Dragoco Fragrance	0/708768					About 0.05
				Spices solubilizer	Polysorbate 20 (Polysorbate 20)	Glennsurf L20	About 0.25
The pH regulator agent	Malic acid is adjusted to pH 5		About 0.07

Should be noted that above-mentioned moisturizing compositions of the present invention can be with any use in the above-mentioned ion-sensitive type adhesive composition of the present invention.Whether in addition, above-mentioned moisturizing compositions of the present invention can be used with any other adhesive composition, comprises conventional adhesive composition, or uses with any known fiber or absorbability base material, no matter be dispersible.

Intensity property

Unless otherwise mentioned, carry out tension test according to following rules.The test of desciccate should be used and ASTM-1117-80, and part 7 similar programs are carried out according to Tappi (the paper industry technological associations of paper pulp) condition (50% relative humidity, 73).Tension test is to carry out as the Thwing Albert 1256-100 cupping machine with RSA-2 10-kg load cell with constant crosshead speed cupping machine.It is wide and 6 inches long that sample is cut into the 3-inch, and be placed between the binder with 4-inch clamping length.Crosshead speed is 12 inch per minute clocks.Measure peak load (for TENSILE STRENGTH) and the percentage elongation under peak load (for stretching).For laterally (CD) tension test, sample cuts in the horizontal.For vertically (MD) tension test, sample is vertically cutting on (cross direction).

Before applying moisturizing compositions, for the tension test under the selected thin slice report drying regime.Vertical dry tensile strength is abbreviated as " MDDT " and horizontal dry tensile strength is abbreviated as " CDDT ".The result can be reported to kg/3-in or g/in of the unit of being scaled or g/2.54cm.

Based on the dry weight of the sample that is cut into appropriate size, (4% salting liquid does not have other additive to excessive moistening solution, is applied unless otherwise mentioned), reaches the solution additional amount of 250-400%.Moistening sample passes Atlas Lab Wringer (Atlas Electric Devices Company then immediately, Chicago, III., No.10404LW-l, zero load) so that the described solution that distributes is equably leniently removed excess solution to reach 200% final solution additional amount in the sample neutralization.Need several iterationses or several the wheel to reach the additional amount target that depends on sample.The sample of prewetting of completion be loaded into then prevent in the plastic bag before test dry.

Sample in the plastic bag of sealing, place reach balance a night after, use the sample of prewetting of former state to carry out laterally wet tension test (CDWT) or vertical wet tensile strength (MDWT) as mentioned above.

For the various tests relevant, have the size of 200mm * 120mm and the enough dark selected soak that can fill 700ml with the container that holds 1000ml with the loss of strength of the thin slice of prewetting that after touching new soln, is taken place.Depend on specimen size, the sample that is no more than 108 square inches is immersed in the soak of 700ml.Balance the sample of prewetting at one night be soaked in the soak, interference-free soaks one section official hour (typically 1 hour) then.After soak time finishes, carefully sample is taken out from soak, drop falls water and tests (that is, sample is placed in the cupping machine neutralization immediately and tests, and does not pass wringer) by the above immediately then.For highly dispersible material, sample usually can not take out from soak under the situation that does not have collapse.For corresponding solution, the tension values of soaking of this type of sample is registered as zero.

For the horizontal wet tensile strength test of deionized immersion, S-CDWT is immersed in sample and reaches 1 hour in the deionized water, tests then.For the horizontal wet tensile strength that hard water soaks, S-CDWT-M (M refers to bivalent metal ion), sample are dipped into the Ca that contains 200ppm that makes from calcium chloride and magnesium chloride ⁺⁺/ Mg ⁺⁺In the water of (2: 1 ratios), soaked 1 hour, test then.For the horizontal wet tensile strength of medium-hard water logging bubble, MS-CDWT-M, sample are soaked in the Ca that contains 50ppm ⁺⁺/ Mg ⁺⁺In the water of (by 2: 1 ratios), soaked 1 hour, test then.Test with increment or soak At All Other Times and to indicate to prevent and the obscuring of S-CDWT or S-CDWT-M test.

In one embodiment of the invention, by use the above-mentioned moisturizing compositions in table 3 and contain the kraft fibers of bleaching of the 80 weight % that have an appointment and the above-mentioned ion-sensitive type adhesive composition of the present invention of 20 weight % in the fibrous material of any air-laid produce hygenic towelette, wherein said percetage by weight is based on the gross weight of dry supatex fabric.In another embodiment of the present invention, by using the above-mentioned moisturizing compositions in table 3 and containing the cork fibrous of bleaching of 90 weight % and the fibrous material of air-laid of ion-sensitive type adhesive composition that contains acrylic ternary copolymer or be substantially free of the copolymer of acrylic monomers of 10 weight % is produced hygenic towelette, wherein said percetage by weight is based on the gross weight of dry supatex fabric.Be added to the amount of the moisturizing compositions in the supatex fabric,, be suitably about 180 weight % to about 240 weight % with respect to the weight of dry supatex fabric in these examples.

Ideally, hygenic towelette of the present invention has the use wet tensile (CDWT) of 100g/in at least and has the Ca of about 50ppm ²⁺And/or Mg ²⁺Soak the TENSILE STRENGTH (MS-CDWT-M) that was lower than about 30g/in in about 1 hour afterwards in the water of ion concentration.More desirably, hygenic towelette has the use wet tensile (CDWT) of 300g/in at least and has the Ca of about 50ppm ²⁺And/or Mg ²⁺Soak the TENSILE STRENGTH (MS-CDWT-M) that was lower than about 30g/in in about 1 hour afterwards in the water of ion concentration.In another example, hygenic towelette is suitable has the use wet tensile (CDWT) of 200g/in at least and has the Ca of about 200ppm ²⁺And/or Mg ²⁺Soak the TENSILE STRENGTH (S-CDWT-M) that was lower than about 20g/in in about 1 hour afterwards in the water of ion concentration.Even more desirably, hygenic towelette has the use wet tensile of 300g/in at least and has the Ca of about 200ppm ²⁺And/or Mg ²⁺Soak the TENSILE STRENGTH (S-CDWT-M) that was lower than about 20g/in in about 1 hour afterwards in the water of ion concentration.

Ideally, the hygenic towelette of handling with the adhesive material of the present invention that contains acrylic ternary copolymer has: when with 10%-400% (by weight) contain the hygenic towelette solution soaking of monovalent ion (NaCl) concentration that surpasses 0.3 weight % the time for 1 inch width sample use wet tensile of 100g/in at least on cross machine (crossmachine direction), and in deionized water, soak the TENSILE STRENGTH that was lower than about 30g/in in about 1 hour afterwards.More desirably, the hygenic towelette of handling with the adhesive material of the present invention that contains acrylic ternary copolymer has: when with 10%-400% (by weight) contain the hygenic towelette solution soaking of monovalent ion (NaCl) concentration that surpasses 0.3 weight % the time for 1 inch width sample use wet tensile of 200g/in at least on cross machine (cross machine direction), and in deionized water, soak and had the TENSILE STRENGTH that is lower than about 30g/in in about 1 hour afterwards.

In other example, the hygenic towelette of handling with the adhesive material of the present invention of the acrylic ternary copolymer that contains the azochlorosulfonate acid anion modification is suitable to have: when with 10%-400% (by weight) contain hygenic towelette solution soaking above monovalent ion (NaCl) concentration of 1 weight % the time for 1 inch width sample use TENSILE STRENGTH of 200g/in and have the Ca of about 50ppm at least on cross machine (cross machine direction) ²⁺And/or Mg ²⁺Soak in the water of ion concentration and had the TENSILE STRENGTH that is lower than about 30g/in in about 1 hour afterwards.Even more desirably, the hygenic towelette of handling with the adhesive material of the present invention of the acrylic ternary copolymer that contains the azochlorosulfonate acid anion modification has: when with 10%-400% (by weight) contain hygenic towelette solution soaking above monovalent ion (NaCl) concentration of 1 weight % the time for 1 inch width sample use TENSILE STRENGTH of 200g/in and have the Ca of about 200ppm at least on cross machine (cross machine direction) ²⁺And/or Mg ²⁺Soak in the water of ion concentration and had the TENSILE STRENGTH that is lower than about 30g/in in about 1 hour afterwards.

Abandon the product that hygenic towelette has high basic weight or wet strength and can have higher wet tensile strength than dashing.For example, product can have the basic weight that is higher than 70gsm as prewet towel or stiff dough cleaning wipes, arrives 150gsm as 80gsm.This series products can have 500g/in or bigger CDWT value, has about 150g/in or still less, and more particularly about 100g/in or still less and the most about 50g/in or S-CDWT value still less has similar scope for S-CDWT-M.

Dispersed

The early stage work of measuring the dispersiveness of thin slice (no matter dry or prewet) depends on the system that accepts shear action when wherein thin slice is in water usually, as measuring the time that the thin slice fragmentation is spent when being stirred by mechanical mixer.Constant acceptance is cut into design and is dashed the test that the product of abandoning provides unpractical and excessive optimism in toilet, and the degree of shearing in toilet is faint and extremely of short duration.In case described product has passed the neck of toilet and entered septic tank, shear rate can be ignored.In addition, described product to be in that dashed can not be fully moistening by the water from water closet when abandoning, or exactly, when apply dash the moment of abandoning when shearing the moisturizing compositions of product do not have time enough to be replaced by the water of water closet.Therefore, when in fact, when it may be not suitable for septic tank (septic) system, dispersed previous measurement result prompting product was dispersible.

For the reality evaluation of dispersiveness, can believe, in case need static relatively measurement to simulate product better by from the abundant low shearing that actual products is experienced when moistening of the water of toilet.Therefore, developed dispersed test method, it does not rely on to shear with it provides the improved procedure of evaluation product for the adaptability of septic tank system.In this method, the TENSILE STRENGTH of product is the original form with it, moistening form (above-described CDWT measure) and (in S-CDWT or the S-CDWT-M test any) measurement product soaks 1 hour in second solution after.Second solution can be used for " deionized dispersiveness " value mensuration deionized water or be used for the hard water (according to S-CDWT-M test) of the measurement of " hard water dispersiveness " value.In in two kinds of situations any, described dispersiveness is defined as: (1 deduct in second solution laterally wet tensile strength divided by the ratio of original horizontal wet tensile strength) * 100%.Therefore, if pre-hygenic towelette soaks 75% of the CD wet tensile strength that lost it in 1 hour afterwards in hard water, then the hard water dispersiveness is (1-0.25) * 100%=75%.Goods of the present invention can have 80% or higher, and more particularly 90% or higher, more specifically 95% or higher deionized water dispersiveness, and can have about 100% deionized water dispersiveness.Goods of the present invention can have 70% or higher, and more particularly 80% or higher, more specifically 90% or higher hard water dispersiveness, and can have about 100% deionized water dispersiveness.

Make the method for hygenic towelette

Pre-hygenic towelette of the present invention can be made with several method.In one embodiment, described ion-sensitive type polymer composition is applied in the fiber base material as the part of the aqueous solution or suspension, wherein needs follow-up drying to remove the bonding of anhydrating and promoting fiber.Especially, in dry run, described adhesive migration activates to the crosspoint of fiber and in these zones and is therefore to provide acceptable strength to base material by adhesive.For example, can adopt following step:

1. provide the absorbability base material that is not highly bonding (for example, the thin slice of Nian Jie air-laid not, the flimsy material net, carding fiber net, fluff pulp, etc.).

2. the ion-sensitive type polymer composition is applied in the described base material, typically with liquid, suspension, or foam forms.

3. will help binder polymer to be applied on the described base material.

4. dry described base material is to promote the bonding of described base material.

Described base material can be dry, the peaking base material temperature to be no more than 160 ℃, or 140 ℃, or 120 ℃, 110 ℃, or 100 ℃.In one embodiment, described base material temperature is no more than 80 ℃ or 60 ℃.

5. moisturizing compositions is applied on the described base material.

6. described product is placed and packed to moistening base material with roll web form or stack manner.

Help applying of binder polymer to carry out with applying simultaneously of adhesive composition, this is by both realize in advance, or helps binder polymer to be added before or after adhesive applies.Other step is suitable carries out shown in above in proper order.

The ion-sensitive type polymer composition is administered on the base material and can carries out by the following method: by spraying; Apply by foams; By being immersed in the bath; Pass through curtain coating; Measure (coating layer thickness) by coating with the rod that electric wire twines; Allow base material pass exuberant roll gap; By contacting with the moistening roller of metering in advance that scribbles binder solution; By base material being pressed against on the deformable carrier that contains the ion-sensitive type polymer composition such as sponge or the felt so that transfer on the base material; By printing, as intaglio printing, ink-jet or flexographic rotary printing; With any alternate manner known in the prior art field.

In the use of foams, mixture is foamed, and typically utilizes foaming agent, and is coated on equably on the base material, applies vacuum after this to take out foam from base material at applied adhesives or when helping binder polymer.Any known foam applications method can both be used, comprise USP4,018,647, the method (being issued to Wietsma on April 19th, 1977) of " Process for the Impregnation of a Wet Fiber Web with a Heat SensitizedFoamed Latex Binder ", its full content is introduced into for reference.Wietsma discloses a kind of method, and wherein Fa Pao latex carries out heat sensitization by adding heat sensitizer such as functionalized silicone compound (containing siloxanes oxyalkylene block copolymer and organopolysiloxane).The application that the specific examples of applicable heat sensitizer and they are used for the heat sensitization of latex is described in U.S. Patent No. 3,255,140; 3,255,141; 3,483,240 and 3,484,394, they all are hereby incorporated by reference.Allegedly compare with the existing method of the emulsion binder that applies foaming, the use of heat sensitizer has obtained having very soft and the product textile-like feel.

The addition of heat sensitizer depends on, especially, and the type of employed latex, needed setting temperature, machine speed and the temperature in the dryer section of machine, and generally be to arrive in about 3% (by weight) scope about 0.05, calculate with dry matter by dry weight based on latex; But also can use amount bigger or still less.Heat sensitizer can add with a kind of like this amount, makes latex under the temperature of the boiling point of water, for example at 35 ℃ to 95 ℃, or under the temperature in about 35 ℃ to 65 ℃ scopes, solidifies.

Be not wishing to be bound by theory, can believe, after the using of binder solution and the drying steps before the using of moisturizing compositions can be by adhesive being driven to the cementation that fiber intersection points is come reinforcing-fiber substrate when moisture is purged, yet therefore promoted effective utilization of adhesive, in selective method, drying steps listed above can be skipped, but the ion-sensitive type polymer composition is applied on the base material, need not too much middle drying and just can apply described moisturizing compositions.In a version of this method, the ion-sensitive type polymer composition adheres on the described fiber selectively, removes unnecessary water in optional pressing step, but does not have the remarkable loss of adhesive from the base material.In another version, before applying moisturizing compositions, do not dewater too much.In another selective method, described ion-sensitive type polymer composition and described moisturizing compositions are used simultaneously, and optional salt or other reactive compound of adding subsequently is with activation or further activate described adhesive.

The present invention illustrates by the following examples that further they are interpreted as limitation of the scope of the invention never in any form.On the contrary, can be expressly understood, by means of various other embodiments, improvement project and their equivalent, after the narration of reading here, under the prerequisite of the scope that does not break away from spirit of the present invention and/or claims, they can be expected by those technical staff of prior art itself.

" thickness " of thin slice used herein is with being connected to Mitutoyo DigimaticIndicator (Mitutoyo company, 31-19, Shiba 5-chome, Minato-ku, Tokyo 108, and what the 3-in acrylic plastics disk of mandrel Japan) was measured passes to measured sample with it with the net load of 0.05psi.When disk rests on the flat surface, Mitutoyo Digimatic Indicator zeroing.When having sample with the same at least big size of acrylic acid disk when being placed under the disk, the thickness reading can obtain from the digital reader of indicator.Water-dispersible base material of the present invention can have any suitable thickness, and 0.1mm is to 5mm according to appointment.For hygenic towelette, thickness can be at 0.2mm to about 1mm, and more particularly about 0.3mm is in the scope of about 0.7mm.Thickness can, for example,,, or, controlled by the tension force that control when forming roll web is reeled by pressurization after adhesive or moisturizing compositions have been used by applied compression roller in the thin slice forming process or afterwards.

The use of measuring platform (platen) method of thickness has obtained the average thickness on the macroscopic scale.Local thickness can change, if especially described product embossing or have the three-dimensional texture that gives in addition.

Embodiment 1

The preparation of the acrylic ternary copolymer of azochlorosulfonate acid anion modification

With acrylic acid (43.3g, 0.60 mole), AMPS (10.7g, 0.052 mole), butyl acrylate (35.2g, 0.27 mole), and 2-ethylhexyl acrylate (20g, 0.11 mole) is dissolved in acetone (70/30) mixture of 55g.With initator, 2,2-azodiisobutyronitrile (AIBN) (0.51g, 3.1 * 10 ^-3Mole), be dissolved in the acetone of 20ml.By with N ₂Bubbling reaches 20 minutes by monomer solution makes described solution deoxidation.In the 1000ml three neck round-bottomed flasks that condenser, two charging hoppers and magnetic stirring apparatus are housed, add acetone (70/30) mixture of 120g.Solvent is heated to backflow in nitrogen atmosphere.Monomer and initator added from charging hopper through 2 hours simultaneously.Allow polymerisation carry out other two hours, when this section period finished, charging hopper and condenser are distilled head and the mechanical agitation rod replaces to remove acetone.Keep the steady stream of N2 in still-process, simultaneous temperature is brought up to about 90 ℃ from about 65 ℃ gradually.When described distillation is finished, the deionized water of 400g is added to reduce the viscosity of polymer solution.Obtained not clarify but uniform solution.

Use the synthetic nine kinds of polymer (sample 1-9) altogether of above-described program.To be dissolved in NaOH (2.1g, 0.052 mole) in the 20ml water at room temperature add with in and AMPS component in the sample.The composition of sample 1-9 is summarised in the following table 5.

All percentages is to provide with mole %.

The acrylic ternary copolymer of table 5. azochlorosulfonate acid anion modification

Sample	％AMPS	％NaAMPS	％AA	％BA	％EIIA
							1	0.0	3.0	64.0	22.5	10.5
2	0.0	3.5	63.5	22.5	10.5
						3	0.0	3.9	62.1	24.6	9.4
4	0.0	4.0	57.0	26.5	12.5
						5	0.0	4.2	64.7	19.7	11.4
6	0.0	5.0	58.0	26.5	10.5
						7	0.0	4.0	63.0	21.5	11.5
8	0.0	5.0	59.0	25.5	10.5
						9	0.0	5.0	60.0	24.5	10.5

Embodiment 2

The preparation of acrylic ternary copolymer

By using at USP5, the polymerization procedure that provides among 312,883 the embodiment 2 is produced acrylic ternary copolymer.Use following monomer: acrylic acid (50g, 0.69 mole), butyl acrylate (25g, 0.20 mole), and 2-ethylhexyl acrylate (25g, 0.14 mole).Described polymer neutralizes with 0.1 molar sodium hydroxide.

Embodiment 3

The preparation of ion-sensitive type polymer formulation material

The polymer of preparation in table 5, sample 9 and above embodiment 2 mix with Dur-O-Set RB, form ion-sensitive type polymer formulation material of the present invention.The polymer formulation of preparation shown in the according to the form below 6 material.

Table 6. ion-sensitive type polymer formulation material

Sample	% terpolymer (embodiment 2)	% modification terpolymer (table 5, sample 9)	％EVA
				1	85.0	0.0	15.0
2	0.0	85.0	15.0
				3	65.0	0.0	35.0
4	0.0	65.0	35.0
				5	95.0	0.0	5.0
6	0.0	95.0	5.0
				7	55.0	0.0	45.0
8	0.0	55.0	45.0
				9	75.0	0.0	25.0
10	0.0	75.0	25.0

Embodiment 4

The dissolubility of ion-sensitive type polymer formulation material

The polymer formulation material of measuring embodiment 3 is to the sensitiveness of the bivalent cation that exists in hard water.The sample 1-10 of embodiment 3 is put into the Ca that has from＜10 to 200ppm variations ²⁺Several CaCl of concentration ₂In the solution.After soaking 1 hour, mark the solubility of each polymer.Solubility results provides in following table 7.

Table 7. solubility results

Sample	Solubility is pressed Ca 2+
					＜10 ppm	50ppm	100ppm	200ppm
	Sample
1		100	94	78	12
	Sample 2					100	100	98	91
Sample 3		100	60	36	2
	Sample 4					99	100	97	90
Sample 5		100	97	88	19
	Sample 6					100	100	99	90
Sample 7		89	42	31	0
	Sample 8					100	96	96	90
Sample 9		100	73	78	7
	Sample 10					100	100	100	90

Under each situation, more solvable from the film that the blend curtain coating that contains NaAMPS forms than the film that contains acrylic ternary copolymer, especially along with calcium ion concentration increases.

Embodiment 5

There is and do not have the test of the adhesion strength of crosslinked polymer formulation material

For the test of pilot-scale, we use the substrate of paper pulp type (CF 405 or the NB 416 pulp form Weyerhaeuser) air-laid that bonds together with the 2-5%bico fiber.Described bico fiber is to have the Type-255 of activation polyethylene sheath and polyester core (from KoSa Fibers ofSalisbury, NC obtains) or Danaklon fiber (from FiberVisions of Varde, Denmark obtains) with polyethylene sheath and polypropylene cores.Two types bico fiber is the 2-3 DENIER and is cut into 6mm length.By applying adhesive formulation on the both sides that 12-15 weight % solution are ejected into above-mentioned substrate.Deducting owing to after the thin slice fundamental strength that the bico fiber brings, be reported in the intensity of various condition subtegulums.Table 8 reported have different formulations substrate in 0.4 weight %NaCl intensity (CDWT) and in deionized water, soak intensity (S-CDWT) after 1 hour:

Table 8. TENSILE STRENGTH

Sample	The % terpolymer	％ EVA	The EVA crosslinkable	BW (gsm)	Adhesive additional amount (%)	Oven temperature (℃)	CDWT (g/in)	S-CDWT (g/in)
									1	85	15	Be	70	22	400	413	112
2	65	35	Be	70	22	400	467	375
									3	85	15	Be	71	23	400	444	116
4	85	15	Be	76	28	400	518	143
									5	85	15	Not	70	22	400	430	21
6	85	15	Be	73	25	350	336	60
									7	65	35	Be	67	18	350	332	237
8	65	35	Be	69	21	350	268	165
									9	85	15	Be	68	20	350	219	35
10	65	35	Be	67	19	350	199	74
									11	85	15	Not	69	21	350	226	20
12	65	35	Not	67	19	350	196	29

BW: basic weight

CDWT: cross machine wet tensile strength.

S-CDWT: in deionized water, soak 1 hour CDWT afterwards.

All above code is all fully drenched when staining for the first time, with respect to the adhesive formulation that contains 100% acrylic ternary copolymer.Simultaneously, contain the adhesive formulation of EVA, spray better, cause on base material improved greatly adhesive distribution and penetrate than 100% acrylic ternary copolymer.Significantly, those preparatons of crosslinkable are not that sample 5,11 and 12 has the S-CDWT that is lower than 30g/in.

Embodiment 6

Preparation has the adhesive formulation of forming shown in the following table 9.The adhesive formulation of 12 weight % solids contents is sprayed on the both sides of thin slice of air-laid.The thin slice of air-laid is based on paper pulp (CF 405, obtain from Weyerhaeuser).Table 9 show substrate in 0.9 weight %NaCl solution intensity (CDWT) and in deionized water, soak intensity (S-CDWT) after 1 hour.Also show sample in salting liquid after the aging time that reached for 16 weeks to the influence of intensity.When they are aging in salting liquid,,, join in the sample to prevent at on-chip fungus growth as Mackstat H66 with preservative agent.

The TENSILE STRENGTH of table 9. substrate

Sample	The % terpolymer	％ EVA	BW (gsm)	Adhesive additional amount (%)	Oven temperature (℃)	Ageing time (week)	CDWT (g/in)	S-CDWT (g/in)
									1	85	15	73	25	440	0	488	14
2	85	15	73	25	440	16	393	11
									3	65	35	64	25	440	0	358	16
4	65	35	64	25	440	12	369	21
									5	55	45	64	25	440	0	364	28
6	55	45	64	25	440	12	354	32

Result in the table 9 shows, even after extensively wearing out in the use salting liquid when Dur-O-Set RB is used as EVA, thin slice does not lose initial properties.If crosslinking agent is present among the EVA, sample is being obtained lower dispersiveness after aging several weeks.

Embodiment 7

Figure 1 illustrates the intensity property of NaAMPS modification terpolymer, it is at hard water (200ppm Ca at the most ⁺⁺/ Mg ⁺⁺Solution) also be dispersible in.Based on 75 weight %NaAMPS modified propylene acid ter-polymers (SSB) and 25 weight %EVA (Dur-O-Set ^RB) substrate use (1.5% or 4.0%NaCl solution in) in demonstrate very good intensity and can being dispersed in the utmost point hard water.SSB-4 was dispersed in the hard water in 10 minutes.SSB-5 was dispersed in the hard water in 3 hours.NaAMPS-SSB has more viscosity than Lion-SSB.

The TENSILE STRENGTH result of embodiment 5-7 uses the MTS tensile test equipment, and MTS 500/S device (MTS Systems, Research Park, North Carolina) is by using the Testworks of Windows software ^TM3.10 version obtains.The nominal 3-inch strip that replaces test usefulness uses the wide strip of 1-inch, is cut into 6 inchages.Clamping length between the binder that scribbles rubber of testing equipment is 3 inches.Test is to operate under the regulation crosshead speed of 12in/min.The MTS equipment of employing modified test program generally obtains and uses the suitable result of foregoing tension test program of wide sample of 3-inch and Thwing-Albert testing machine.

Embodiment 8

Help the interpolation of binder polymer in the ion-sensitive type polymer can reduce the shear viscosity of blend polymer, compare with the shear viscosity of independent ion-sensitive type polymer.Table 10 has illustrated and adding the various effects that help binder polymer according to the present invention in acrylic ternary copolymer (SSB-2).

The effect that table 10. is various to be helped binder polymer to add among the SSB-2 to be brought

Blend polymer	Nian Du @100sec -1
		18 weight %SSB-2 solids	Too high can't the measurement:＞100,000cps
15 weight % Sodium Polyacrylate solids (MW=250,000,50% neutralization ratio)	10,000cps
		The clean SSB-2 of 12 weight %	80cps
The blend of forming by 80 weight portion SSB-2 and 20 weight portion Rhoplex NW 1715K of 12 weight %	25cps
		The blend of forming by 80 weight portion SSB-2 and 20 weight portion Rovene of 12 weight %	28cps
The blend of forming by 80 weight portion SSB-2 and 20 weight portion Dur-O-Set RB of 12 weight %	20cps

Table 10 shows, Rhoplex ^NW 1715K, Rovene ^4817 and Dur-O-Set ^The interpolation of RB significantly reduces the shear viscosity of independent SSB-2 acrylic ternary copolymer.The reduction of viscosity is not the pure dilution owing to SSB-2, because the interpolation of Sodium Polyacrylate has caused the significantly improving of shear viscosity of SSB-2.

Embodiment 9

From Rhoplex ^NW 1715K, Rovene ^4817 and Dur-O-Set ^The dry solid bar of RB preparation.Prepare bar by a certain amount of polymer being poured in the rectangle silicone molds (the open rectangle silicone molds that 1cm is wide, 4cm is long and 3mm is dark).Polymer in the mould heats a night down at 60 ℃ then.Dry polymer in mould is placed in the container of the deionized water under about 23 ℃ that 30ml is housed then, places 1 hour.Bar is not dispersed in the deionized water.

From respectively with Rhoplex ^NW 1715K, Rovene ^4817 and Dur-O-Set ^Acrylic ternary copolymer (the NaAMPS of the azochlorosulfonate acid anion modification of RB blend ⁺SSB) preparation bar sample.Help binder polymer to prepare blend polymer from the acrylic ternary copolymer and the 25 weight % of 75 weight % azochlorosulfonate acid anion modifications.According to preparing the bar sample with the above same mode.The bar sample is added in the deionized water then.From the bar sample of following polymers blend preparation each was dispersed in the deionized water in 1 hour: i.e. NaAMPS ⁺SSB/Rhoplex NW1715K, NaAMPS ⁺SSB/Rovene 4817 and NaAMPS ⁺SSB/Dur-O-Set RB.

Embodiment 10

At the base material that is purchased the sheet form of preparation air-laid on the air-laid machine with width of 66.5 inches.DanWeb air-laid predecessor with two forming heads (forming heads) is used to produce the base material of the basic weight with about 60gsm.Use the WeyerhaeuserCF405 bleached softwood kraft fiber of paper pulp sheet form and fibration, the thin slice of formation air-laid on the motion silk screen of 200-300 feet per minute clock rate degree then in hammer-mill.The new thin slice that forms comes densification by the heating compression roll and transfers on second silk screen, and wherein the atomized spray of thin slice water is next moistening, has just applied before second compression roll that is used for the further densification of thin slice and has estimated 5% moisture additional amount.Described thin slice is transferred to then on the baking oven silk screen and on the top and is ejected on the exposed surface of thin slice with ion-sensitive type polymer formulation material mixture, applies 10% ion-sensitive type polymer formulation material solid with respect to the dried fibres quality of thin slice.

Ion-sensitive type polymer formulation material mixture contains the water as carrier of 12% adhesive solids, and wherein adhesive contains 75%SSB-4 as ion-sensitive type polymer formulation material and 25%Rhoplex ^NW-1715K latax (Rohm and Haas Corp.) is as helping binder polymer.

Be used in 95psi down operation by Spraying Systems Co. (Wheaton, Illinois) a series of Quick Veejet of Zhi Zaoing ^Nozzle, Nozzle No.730077 sprays.In the 5.5-inch, provide 13 these type of nozzles with 8 inches tip-silk screen distance (tip-to-wire distance) at the spray boom above the thin slice in the heart.This arrangement has realized spray-cone 100% overlapping of the ion-sensitive type polymer formulation material solution of this test.

After described thin slice was injected, it was transported in the through-flow baking oven with 225 ℃ of air with the dry adhesion agent solution.Described thin slice is transferred to the downside of another baking oven silk screen then, on it, there is another spray boom (spray boom) to pass, wherein more polyion sensitive polymer formulation solution is injected on the bottom side of thin slice to increase other 10 weight % solids, calculates with respect to the dried fibres quality of thin slice.Described thin slice passes two drying devices in succession of the through-flow air drying measure of 225 ℃ of air then, finishes the drying of thin slice.The pressure reduction of crossing over thin slice is about 10 inchess of water(in H.The length of three drier sections (from first to the 3rd) is respectively about 9,10 and 6 feet.

The thickness of thin slice is 1.14mm (this numerical value, the same with other physical property of report here, can wait according to fiber, basic weight to change) after the drying.(MDDT) intensity that stretches of vertically doing of thin slice is measured under 4.59kg/3in.(CDDT) intensity that stretches of laterally doing of thin slice is measured under 3.82kg/3in, has 8.98% CD to stretch.

Thin slice dry and that handled is trimmed to 60 inches width then, batches and be cut into subsequently the wide roll web of 4-inch, and it handles and form the coreless roll coil paper that is suitable as the shower paper napkin of prewetting then with moisturizing compositions.Before thin slice being coiled into size fit for service roll web, moisturizing compositions is ejected into equably on the side of the wide thin slice of 4-inch.Described moisturizing compositions is 4 weight %NaCl in deionized water.

Under 0.76kg/3in, measure in 4 weight % salt laterally wet (CDWT) intensity that stretches under water.The CDWT intensity of soaking is 0 effectively, and is the same with the CD TENSILE STRENGTH of soaking, and illustrates that sheet material is dispersible fully.

Embodiment 11

Formed sheet material is equal to the sheet material of embodiment 10, and just the fiber in the thin slice of air-laid is 75% softwood kraft and 25%PET fiber.The thickness of thin slice is 1.35mm after drying.(MDDT) intensity that stretches of vertically doing of thin slice is measured under 3.87kg/3in.(CDDT) intensity that stretches of laterally doing of thin slice is measured under 2.84kg/3in, has 11.31% CD to stretch.Under 0.82kg/3in, measure in 4 weight % salt laterally wet (CDWT) intensity that stretches under water.The CDWT intensity of soaking is 0 effectively, and is the same with the CD TENSILE STRENGTH of soaking.

Embodiment 12

According to the embodiment that embodiment 10 adds, just the Rovene latax is as helping binder polymer and basic weight and fibrous by changing shown in the table 11.The CDWT result who soaks all is 0, shows the loss fully of TENSILE STRENGTH.Other the results are shown in the table 11, and wherein Pulp/PET specifies in the ratio of cork and synthetic fiber in the base material, and BW is basic weight (gsm), and TH is that thickness (mm) and S-CDWT-M are containing the Ca of 200ppm ⁺⁺/ Mg ⁺⁺The wet tension test of immersion CD in one hour of the sample that soaks in the water of (by 2: 1 ratios).

The measurement of table 11. embodiment 3A-3F.

Experiment	Paper pulp/PET	BW	TH	MDDT	CDDT	CDWT	S-CDWT-M
								3A
	100/0	60.3	1.18	5.44	4.12	0.69	0
								3B	85/15	62.9	1.25	4.68	4.23	0.66	0
3C	75/25	55.6	1.04	5.48	4.06	0.66	0
								3D	75/25	59.3	1.19	4.87	3.96	0.81	0.17
3E	75/25	60.7	1.48	4.41	3.51	0.79	0.12
								3F	85/15	62.7	1.46	4.6	3.82	0.76	0

Non-zero S-CDWT-M value (soaking wet the stretching in hard water) is a non-zero for two tests with 25%PET fiber, and the synthetic fiber of prompting higher amount begin to damage water dispersible.

Embodiment 13

Prepare pre-hygenic towelette, just helping binder polymer is the modification Elite  latax that is substantially free of crosslinking agent that is provided by NationalStarch similar to Example 10ly.The basic weight of thin slice is 61.35,1.21 millimeters of thickness, MDDT 5.09kg/3in, MD stretches 7.89%, CDDT 3.90kg/3in, CD stretches 9.50%, CDWT 0.78kg/3in in 4% salt solution, CDWT stretches 32.96%, and deionized water (S-CDWT) and hard water (S-CDWT-M) among both one hour residual strength afterwards all be 0kg/3in.

Embodiment 14

Particle adds

The pre-hygenic towelette that contains the substrate of embodiment 10 with the moisturizing compositions preparation that contains the particle slurry.Described particle is selected from by Presperse, the following products that Inc. (Piscataway, New Jersey) sells:

Table 12. is selected for the Presperse of pre-hygenic towelette, the particle of Inc.

Title	Form	Characteristic
			MCP-45	Mica and polymethyl methacrylate	Fine powder, a kind of platelet that scribbles microsphere, 13-17 micron
Sericite SL-012	98% mica, 2% methyl polysiloxane (methicone)	Meticulous white powder, hydrophobic surface, 2-10 micron
			Rose talc	Talcum	White powder, the 10-12 micron
Permethyl 104A	Iso-octahexacontane (polyisobutene)
			Cashmir K-II	Mica (97%), silica bead (3%), 0.3 micron	Meticulous white powder scribbles the platelet of microsphere, 10-14 micron
Synthecite FNK-100	Synthetic fluorphogopite	Fine powder, the 10-15 micron
			Ganzpearl GMX-0610	The methyl methacrylate interpretation	Globular powder, the 4.5-8.5 micron
Ganzpearl GS-0605	Styrene/divinyl benzene copolymer	White powder, the 4.5-8.5 micron
			Ganzpearl PS-8F	Styrene/divinyl benzene copolymer	0.4 micron
Spheron N-2000	Amorphous silica	White powder, 2-15 micron, low oil absorbency
			Spheron L-1500	Amorphous silica	White powder, 3-15 micron, high oil absorbency

For each grain type in the table 12, prepared and had 0.5%, 1%, five 1000 gram batch of materials of the moisturizing compositions of the granule density of 2%, 5% and 10% (by weight).Prepare each batch of material (for 5 batch of materials, the described water yield is respectively 926.3g, 921.3g, 911g, 881g, and 831g) by the water deionized, that filter that in 1.15 liters of beakers, adds appropriate amount.Stir described jar content on being positioned over Ther mole yne Cimarec 2 agitators by 2.5-inch magnetic stirring bar, mixing speed be set to can be in the middle of 5 jars each in the maximum of strong center vortex is provided.Each batch of material contains: 4 weight % sodium chloride are added in the water as 40g salt; 1 weight % (10g) Amisoft ECS22-P acyl glutamic acid salt surfactant (Ajinomoto, Tokyo, Japan); 0.5 weight % (5g) DC polysiloxane emulsion (Dow Corning) is added in salt solution and the surfactant; 1 weight % (10g) Mackstat H, 66 preservative agents (McIntyreGroup, Chicago, Illinois); With the spices of 0.05 weight % (0.5g), it is at first sneaked in the polysorbate 20 (polysorbate 20) of 0.25 weight % (2.5g), sneaks into then in the solution that contains aforementioned composition; Powder (0.5 to 10 weight % or 5g are to 100g) with various amounts.Described powder is added in the solution when solution is stirred and makes it wetting and pass through about 30 minutes a period of time suspended after adding powder.Need some additional manual stirrings, make some powder promote to mix.In case powder is dispersed in the liquid, the malic acid that makes in water by the intensity of adding with 50 weight % is with pH regulator to 5.0.Described pH measures with 59002-00pH/mV/ ℃ of instrument of the Cole FarmerModel with Model 59002-72KK8 electrode.

Then in the particle suspension liquid each is joined in the dry air-laid formula substrate, the latter is according to embodiment 13 usefulness NaAMPS adhesives with help the binder polymer processing.The interpolation level is 200%, puts on by spraying on the side of thin slice.The thin slice of getting wet is sealed in then in the plastic bag and places a night.The investigation that is used as the pre-hygenic towelette that the graininess suspension of moisturizing compositions handled has disclosed particle and generally has been retained in the hygenic towelette thickener that need not to add or polymer retention agent.Squeeze described pre-hygenic towelette, for example, obtain not having basically on apparent the almost limpid fluid of particle, opposite with the cream that is used for moist tissue.Usually, after using described paper handkerchief, in hand, do not stay observable residue.As if described particle also improved opaque type usually and tactile properties improvement (reducing viscosity, better the rheology sensation) be provided slightly.

Embodiment 15

The effect of the starch granules of gelation in moisturizing compositions of the present invention is not to investigate as the means of the surface touch that reduces viscosity and the pre-hygenic towelette of improvement.Five kinds of moisturizing compositions that contain tapioca are basis formulation in table 13.Thin slice according to the cork air-laid of embodiment 10 is wetting with 300% additional amount with moisturizing compositions.(QS is meant " amount " that is enough to reach required pH).

Table 13. contains the prescription of five kinds of moisturizing compositions of starch

Water	A	B	C	D	E
						Water (drinking water)	76.9	71.9	68.9	66.9	96.45
Laponite XLS	2	2	2	2
						Phosphatide CDM					0.5
Malic acid (50% solution) transfers to pH4	7	7	7	7
						Tapioca 28-1810	10	15	18	20
DC 1784	1	1	1	1
						Dragoco Fragrance 0/708768	0.1	0.1	0.1	0.1	0.05
Mackstate H 66	0.5	0.5	0.5	0.5	0.5
						Sodium chloride	1.5	1.5	1.5	1.5	1.5
Mackam 2C	1	1	1	1	1
						Malic acid (50% solution) transfers to pH4	QS	QS	QS	QS	QS

When the personnel selection feel was felt, the pre-hygenic towelette that comprises starch demonstrated the viscosity of minimizing, compares with the similar pre-hygenic towelette that does not have starch.The paper handkerchief that contains starch is also felt smoother.

Embodiment 16

By using the additional pre-hygenic towelette of moisturizing compositions preparation in table 14, list, a kind of in these compositions contain starch as additive and wherein another kind contain botanical.Described moisturizing compositions is added in the fiber base material of the air-laid that contains the ion-sensitive type adhesive.Described moisturizing compositions is with the additional amount interpolation of 300 and 200 weight % respectively.

The prescription of two kinds of moisturizing compositions of table 14.

Code	Starch	Botanical
			Prescription #
	1	2
			Raw material
Water
			Water (running water)	61.4	94.5
Laponite XLS	2
			Phosphatide CDM		0.5
Malic acid (50% solution) transfers to pH4	7
			Tapioca (Tapioca) 28-1810	25
DC1784	1	0.5
			Dragoco Fragrance 0/708768	0.1	0.05
Mackstatestate H66	1	0.5
			Sodium chloride	1.5	1.5
Mackamam 2C	1
			Malic acid (50% solution) transfers to pH4	QS	QS
			CS-22		0.5
Ernulgin G		0.5
			Witch hazel (Witch Hazel)		0.5
	100	100
			PH-is final
The solution additional amount	300％	200％

Embodiment 17

Binding agent specifying

Prepare various ion-sensitive type adhesives, it contain acrylic acid (AA), butylacrylic acid (butacrylic acid) (BA), 2-ethylhexyl-acrylic acid, and AMPS has at mole % and the molecular weight shown in the table 15:

Table 15. contains the ion-sensitive type adhesive of AMPS

The SSB code	The mole % of monomer:
						MW×10 6	AA	BA	2-EHA	AMPS
	A	1.54	60	24.5	10.5						5
B						1.32	60	24.5	10.5	5
	C	0.604	60	24.5	10.5						5
D						0.548	60	24.5	10.5	5
	E	0.609	60	24.5	10.5						5
F						0.545	60	24.5	10.5	5
	G	1.21	62	24.5	8.5						5
H						0.79	60	24.5	10.5	5
	I	0.916	60	24.5	10.5						5
J						0.71	60	24.5	10.5	5
	K	0.786	60	24.5	10.5						5
L						0.845	60	24.5	10.5	5
	M	0.640	60	24.5	10.5						5
N						0.800	60	24.5	10.5	5
	O	0.635	60	24.5	10.5						5
P						0.610	60	24.5	10.5	5
	Q	0.575	60	24.5	10.5						5
R						0.638	60	24.5	10.5	5
	S	0.912	62	26.5	7.5						4
T						0.609	60	25.5	10.5	4
	U	0.835	58	27	10						5
V						0.675	58	27	10	5
	W	0.734	58	27	10						5
X						0.716	58	27	10	5
	Y	0.650	58	27	10						5
Z						0.718	58	27	10	5
	AA	0.518	58	27	10						5
AB						0.544	58	27	10	5

Method according to embodiment 1 prepares these adhesives, but scales up as the batch processes that can produce hundreds of gallon/every batch.

Embodiment 18

Typical moistening solution

Mix following ingredients according to following specific weight % and prepare moisturizing compositions: 92.88 weight % deionized waters; 4 weight %NaCl; 1 weight %Mackstat H-66 preservative agent (McIntyreGroup; Chicago; Illinois); 1 weight %CS22 acyl glutamic acid salt anionic surfactant (Amisoft Corp.; Tokyo; Japan); 0.5 weight %DC 1785 polysiloxane emulsions (DowCorning); 0.25 weight %Solulan L-575 (PEG-75 lanolin; can be from Amerchol (branch company of Union Carbide)); 0.05 weight %Dragoco spices 0/708768 (Dragoco SA; Cuautitlan Izcalli, D.F.Mexico, Mexico); 0.25 the 50 weight % concentration malic acid solutions of weight % polysorbate 20 (polysorbate 20) and about 0.07 weight % make pH transfer to 5.0.

Embodiment 19

The substrate of handling;

Base material with embodiment 10 described device fabrication air-laids.Basic weight is that 65gsm and described fiber are 100%Weyerhaeuser CF405 bleached softwood kraft slurries.Described binder solution has the adhesive solids content of 12.8 weight %, and it is that the SSB code H and the 25 weight %Dur-O-Set RB latexes of table 15 help adhesive (National Starch) that 75 weight % are wherein arranged.Described in embodiment 1, described binder solution is injected on the thin slice, for whole three baking oven parts, has 215 ℃ drier air themperature.

Embodiment 20

The substrate of handling;

According to the base material of embodiment 10 preparation air-laids, just basic weight is that 63gsm and oven temperature are 227 ℃.Reel speed is 197fpm.The thickness of drying slice is 1.30mm.

MDDT is 5.55kg/3-in, and CCDT is 4.83kg/3-in, and CDWT (in 4%NaCl solution) is that 1.07kg/3-in and S-CDWT and S-CDWT-M (1 hour soak test) obtain 0kg/3-in.

In the dry thin slice some are cut into 4.25-inch width and utilize and contain the 4%NaCl in deionized water but do not have the moisturizing compositions of surfactant to handle with 225% additional amount.The thin slice of getting wet uses the stab knife with 0.070 inch deep operations to puncture, and punctures each 4.5 inches.Thin slice after the puncture is wound into the coreless roll coil paper with 100 puncture sheet/every volumes (about 37.5 feet/every volume) and puts into the white plastic box so that be used for the distributor of pre-hygenic towelette later on.

Embodiment 21

The part of the drying of embodiment 20, the thin slice of handling is carried out wetting with the moisturizing compositions of embodiment 18 and is changed into puncture roll web form, as the pre-hygenic towelette that does not need the bathroom distributor.

The comparative example 22

By using the method for in embodiment 10, describing, make the base material of air-laid of routine, the adhesives of basic weight with 60.1gsm.Dur-O-Set E-646 (National Starch) uses with wood pulp (CF405).Described base material is with the 4%NaCl solution wetted and use described method test.Described adhesive makes Dur-O-Set E-646 compound self-crosslinking fully; Do not use the adhesive of the quick property of salt.Described adhesive solids quality is 17% of a base material quality.The dry thickness of thin slice is 1.4mm, with the CDWT value be 1.3kg/3-in, and S-CDWT is 1.2kg and S-CDWT-M is 1.15kg, show after soaking thin slice kept nearly all it intensity and shown that crosslinked latex provides the main TENSILE STRENGTH of thin slice and latex to be bonded in the water and do not weakened basically.

Embodiment 23

By the following stated, the salt-sensitive binder by use table 15 and helping adhesive (not being self-cross linking type) shown in the table 16 has prepared many adhesives/help binder combination.

The table 16. not latex of self-crosslinking helps adhesive

Help adhesives I D	Help adhesive	Manufacturer
				1	Dur-O-Set RB	National Starch
2	Rhoplex NW-1715K	Rohm and Haas
			3	Rovene 4817	Mallard Creek

By using, make the base material of air-laid from the BK bleached kraft fiber in the method described in the embodiment 10.Described base material is with the 4%NaCl solution wetted and use described method test.All base material is made up of wood pulp (CF405) and adhesive.The results are shown in the table 17, wherein binder combination as one man contain 75% be selected from the table 15 salt-sensitive binder and 25% be selected from the adhesive that helps in the table 16.The adhesive that adhesive/help the adhesive hurdle to be meant is listed in table 15 and 16 respectively and help adhesive.For example, " A/1 " is meant the mixture that helps adhesive of SSB Code A and table 16 in table 15.

The tensile strength data of the various adhesive compositions of table 17.

The % adhesive	Adhesive/help adhesive	SSB MW×10 6	BW (gsm)	Thickness (mm)	CDWT (kg/3″)	S-CDWT (kg/3″)	S-CDWT-M (kg/3″)	S-CDWT-M3 3hrs(kg/3″)
									16.7	A/1	1.54	71.3	1.46	0.990	0	0.330	0.180
20	B/1	1.32	63.3	1.25	1.242	0.163	0.470	0.310
									20	B/1	1.32	66.6	1.46	1.040	0	0.230	0.550
20	G/1	1.21	62.2	1.20	1.002	0	0.270	0
									20	H/1	0.79	63.1	1.3	1.070	0	0	0
16.7	C/1	0.604	73.6	1.59	0.750	0	0	0
									20	C/1	0.604	71.2	1.5	0.900	0	0	0
20	C/1	0.604	61.1	1.28	1.140	0	0	0
									20	D/1	0.548	62.5	1.32	0.900	0	0	0

In table 17, find out, after in deionized water, soaking 1 hour, nearly all substrate loss more than 80% (S-CDWT) of they TENSILE STRENGTH.Bivalent cation (Ca at 200ppm ⁺⁺/ Mg ⁺⁺Than being 2: 1) solution in soaked 1 hour after, substrate loss more than 60% ((S-CDWT-M) of they intensity.Especially, in the test shown in the table 17, when the molecular weight of salt-sensitive binder is lower than 1,200,000 o'clock, after soaking 1 hour in 200ppm solution, sample lost their intensity fully.In 200ppm divalent cation solution after 3 hours the soak time, have high molecular the SSB ordinary loss their more intensity, but still have the TENSILE STRENGTH of non-zero.

By contrast, comparative example 22 soaks to have lost after 1 hour in deionized water or 200ppm divalent ion solution and is lower than 15% their intensity.Comparison had been lost more TENSILE STRENGTH than embodiment 22 after whole base materials in table l7 were soaking.

Embodiment 24

The difference of table 16 helps the salt-sensitive binder code F blending of adhesive and table 15.Adhesive blending thing uses the method for describing in embodiment 10 to apply then, produces the base material of the air-laid of listing in table 18.Under each situation, 20% adhesive solids is to help the blend of adhesive to be applied on the base material with 75%SSB/25%.

The various tensile strength data that help adhesive composition of table 18.

Adhesive/help adhesive	The used adhesive that helps	BW (gsm)	Thickness, (mm)	CDWT (kg/3″)	S-CDWT (kg/3″)	S-CDWT-M (kg/3″)
							F/1	Dur-O- Set RB	59.77	1.06	0.735	0	0
F/2	Rhoplex	60.83	1.14	0.758	0	0
							F/3	Rovene	60.28	1.18	0.687	0	0

Under similar experimental condition, whole three kinds are helped adhesive to carry out comparably.All base material has all lost their TENSILE STRENGTH (S-CDWT-M) in 200ppm divalent cation solution, has nothing to do with helping adhesive type.

Embodiment 25

Surveyingpin withdraws from the needed peeling force of product for the skin from the centreless coiled material of the pre-hygenic towelette that is suitable as wet hygiene paper product.Described product is according to embodiment 10, makes with the additional amount of 200% moisturizing compositions.It is wide and handle with 200% additional amount with moisturizing compositions that the thin slice of described drying is cut into the 4.25-inch, described composition contains and has surfactant, polysiloxanes (silicone), with the 4%NaCl in the deionized water of lanolin, as listed for moisturizing compositions Q, R and S at table 19.The thin slice of getting wet uses stab knife to puncture, and punctures per 4.5 inches during operation.Thin slice after the puncture is wound into the coreless roll coil paper with 100 puncture sheet/every volumes (about 37.5 feet/every volume) and is sealed in the plastic casing so that be used for the distributor of pre-hygenic towelette later on.Table 19. is wet three

Other additive in the profit composition

Solution	Polysiloxane emulsion	Lanolin	The acyl glutamic acid salt surfactant
				Q	0.50％	0.25％	CS22
R	1.00％	0.25％	ECS 22P
				S	1.00％	0％	ECS 22P

Described roll web freely is in the plastic barrel with bottom round, that rib is arranged, and described bottom keeps roll web in place, makes that when the upwards vertical towing of tail end at roll web comes pine to move back described roll web minimum friction is arranged.Adjacent layer adheres to mutually, makes that need apply some power could separate these layers.Needed peeling force be lower than the weight of roll web and as if substantially greater than when roll web rotates by the frictional resistance that tube provided, this can partly be verified by the angle between thin slice and the roll web at the burble point place.There is not peeling force, the thin slice that pulls up and at the burble point place perpendicular to the angle between the line (line) of roll web will be 90 the degree, when but pine launched to have the wet roll paper of salt-sensitive binder, angle was lower than 90 degree basically, and therefore giving peeling force separates described thin slice.

Described peeling force is measured with the MTS Sintech 1/G testing machine that TestWorks 3.10 softwares are housed.Total Test is to carry out in the laboratory in controlled condition under the Tappi standard conditions.Afterbody with the wide anchor clamps clamping roll web of the 4.5-inch of rubber surface, allow the roll web position directly under anchor clamps, do not have peeling force to cause that thin slice encases the part of roll web and deviates from vertical direction if this makes, then on roll web during debatching afterbody keep vertical.Described anchor clamps are connected in crosshead, and it upwards pulls the flimsy material thin slice with 100cm/ minute speed.Peeling force is measured by the 50N load cell.By two tests of two tests of 4 each self-separations and 5 each self-separations are average in addition, write down the average load of extracting 18 from roll web.From roll web only first 18 be used for described measurement.The average peeling force of two roll webs of every kind of condition (for altogether 36 get overall average) be recorded in the following table 20.

Table 20. takes off the needed peeling force of thin slice (gram) from the wet roll paper of reeling.

BW，gsm	Thickness mm	The adhesive additional amount	Solution	MDWT g/in	Peeling force g
						65	1.1	22％	Q		500	167
65	1.1	22％	R	475	170
						65	1.1	22％	S	533	162
60	0.76	20％	Q	438	131
						55	0.76	20％	Q	353	106
55	0.76	20％	R	341	120
						55	0.84	20％	R	385	115

For have 7 and 15cm between the peeling force of roll web of width (width of roll web of test is 10.8cm in table 20) suitablely be lower than 500g, more preferably less than 300g, preferably be lower than about 200g again, further preferably be lower than about 160g, most preferably be lower than about 120g, have about 50g to about 350g, or about 80g is to the illustrative scope of about 200g.In general, the peeling force of every 4-inch width of wet roll paper can be any in the above-mentioned value of these scopes.

Embodiment 26

Additional sample is that just the described fibre blend of 15 weight % is made up of the wrinkling PET fiber (KoSa) of 6mm according to above embodiment 24 preparations.The difference of table 16 helps the salt-sensitive binder code F blending of adhesive and table 15.Adhesive blending thing uses the method for describing in embodiment 10 to apply then, produces the base material of air-laid, and their character is listed in table 21.Under each situation, 20% adhesive solids is to help the blend of adhesive to be applied on the base material with 75%SSB/25%.The character of these base materials is measured after with the 4%NaCl solution wetted.Whole three are helped adhesive to test comparably.All base material has all lost their TENSILE STRENGTH in 200ppm divalent cation solution, has nothing to do with helping adhesive type.With the parallel result's contrast in embodiment 24, the introducing of synthetic fiber has caused the slight appropriateness increase that improves (CDWT) and dry volume to medium intensity.

Table 21. has PET fiber and the various data that help the base material of adhesive.

Adhesive/help adhesive	The used adhesive that helps	BW (gsm)	Thickness, (mm)	CDWT (kg/3″)	S-CDWT (kg/3″)	S-CDWT-M (kg/3″)
							F/1	Dur-O-Set RB	63.32	1.31	0.782	0	0
F/2	Rhoplex	62.07	1.35	0.820	0	0
							F/3	Rovene	62.90	1.25	0.660	0	0

Embodiment 27

According to embodiment 26, increased the amount that is added into the synthetic fiber in the fibre blend and carried out additional embodiments.Use the Lyocell fiber of wrinkling PET fiber of 6mm (KoSa) or wrinkling 2.4 dtexs of 6mm, as indicating in the following table 22.Described adhesive blending thing is the constant blend that 75%SSB and 25% helps adhesive.

Table 22. has PET fiber and the various data that help the base material of adhesive.

Paper pulp/synthetic fiber	The synthetic fiber type	Adhesive %	Adhesive/help adhesive	BW (gsm)	Thickness (mm)	CDWT (kg/3″)	S-CDWT (kg/3″)	S-CDWT-M (kg/3″)
									100/0	Do not have	20％	F/3	60.28	1.18	0.687	0	0
85/15	PET 6mm	20％	F/3	62.90	1.25	0.660	0	0
									75/25	PET 6mm	20％	F/3	59.32	1.19	0.805	0	0.17.
75/25	PET 6mm	20％	F/3	60.65	1.48	0.790	0	0.120
									85/15	PET 6mm	20％	F/3	62.67	1.46	0.757	0	0
85/15	Lyocell- 6mm	19％	E/2	58.3	1.08	0.969	0	0
									75/25	Lyocell- 6mm	19％	E/2	59.2	1.09	1.080	0	0.127

It is non-zero for those test combinations that 25% synthetic fiber (PET or Lyocell) arranged that non-zero in the divalent cation of 200ppm soaks the CDWT TENSILE STRENGTH, is indicating that higher amount begins to damage water dispersible.

Embodiment 28

The method preparation of all describing according to the method manufacturing of embodiment 10 and at the base material shown in the table 23 according to embodiment 23.Whole base materials in table 23 are that the paper pulp (CF405) from air-laid forms.All adhesive blending thing is that 75%SSB and 25% helps adhesive.The dry thickness of sheet material can be by being controlled by the level of two compression rolls adjusting thin slices compression before the spraying first time of adhesive.Use the SSB code O and the Q of table 15.

Table 23. has PET fiber and the various data that help the base material of adhesive.

% adhesive in the sheet material	Adhesive/help adhesive	BW (gsm)	Thickness (mm)	CDWT (kg/3″)	S-CDWT (kg/3″)	S-CDWT-M (kg/3″)
							20	O/1	66.0	1.27	1.055	0	0
20	O/1	68.2	0.77	1.550	0	0
							20	O/1	52.5	1.19	0.728	0	0
20	Q/1	54.19	0.75	1.372	0	0
							17	Q/1	57.5	0.89	1.110	0	0
20	Q/1	59.90	0.75	1.583	0	0
							20	Q/1	65.36	0.76	1.696	0	0
20	Q/1	66.43	1.20	1.296	0	0

Seem that the compression of drying slice can significantly improve final sheet material wet strength before adhesive application, but does not influence dispersiveness.This exceeds unexpected intensity raising degree and makes it possible to adhesive percentage minimizing equal wet tension values of realization in interior various combinations in containing basic weight minimizing and/or sheet material.

Embodiment 29

All base material is to prepare according to the method for describing in embodiment 27.All base material is by 20% adhesive in fibre blend that indicates in the table 24 and the sheet material with as helping the Dur-O-SetRB of adhesive to form.Synthetic fiber are wrinkling and PET 6mm (KoSa) or 6 or the Lyocell with 1.7 or 2.4 dtexs (Accordis) of 8mm.

Table 24. has the data of the base material of various fibers and adhesive.

Code	The % synthetic fiber	Synthetic fiber	Adhesive/help adhesive	SSB MW	BW (gsm)	Thickness (mm)	CDWT (kg/3″)	S-CDWT (kg/3″)	S-CDWT-M (kg/3″)
										2701	0	Do not have	F/1	545000	59.8	1.06	0.735	0	0
2702	15	PET	F/1	545000	63.3	1.31	0.782	0	0
										2713	15	L-2.4-6	F/1	545000	62.0	1.39	0.840	0	0
2714	15	L-1.7-6	F/1	545000	61.8	1.33	0.768	0	0
										2715	15	L-1.7-8	F/1	545000	63.7	1.47	0.842	0	0
2716	0	Do not have	J/1	710000	65.5	1.11	1.193	0	0
										2717	15	L-1.7-8	J/1	710000	61.4	1.02	1.512	0	0.200
3010	0	Do not have	R/1	638000	61.10	0.80	1.710	0	0
										3015	15	PET	R/1	638000	62.23	0.86	1.769	0	0.070
3016	5	L-1.7-8	R/1	638000	60.63	0.79	2.620	0	0.170

The embodiment of table 24 has disclosed synthetic fiber length, SSB molecular weight and thin slice compression and has combined and can influence the dispersiveness of product, and this S-CDWT-M value by it illustrates.By 6 or whole base materials of forming of 8mm synthetic fiber can disperse with low molecular weight SSB.Along with the raising of molecular weight, in divalent cation solution, soak some that 8mm Lyocell base material after 1 hour begins to keep its intensity; Yet this base material can be dispersed in the DI water.The densification of drying slice also can influence the dispersiveness of the base material (code 3015 and 3016) that contains synthetic fiber before adhesive application.Code 3015 and code 3016 all fully can be dispersed in the DI water.By selecting lower molecular weight SSB to combine, can add the dispersiveness of sheet material with synthetic fiber and drying slice densification.

Embodiment 30

The base material that preparation is listed in table 25 is used the 4%NaCl solution wetted and is tested according to the method for describing in embodiment 29.Each base material helps adhesive blending thing to form by the SSB/ that indicates in the fibre blend that is indicated and 20% adhesive and the table 25.Dur-O-Set RB is the adhesive that helps that uses in whole samples of listing in table 25.All code uses 100% cork fibrous, and just last code 2813 contains 15%PET fiber (from the wrinkling fiber of 6mm of KoSa acquisition).It is constant in about 60gsm that basic weight keeps usually.The thickness of the thin slice of air-laid can be by being controlled by the level of two compression rolls adjusting thin slices compression before the spraying first time of adhesive.By using handle-o-meter (Handle-o-meter) to measure the dry CD stiffness of selected base material in table 25 and being recorded as stiffness.

Table 25. has the data of the base material of various adhesive blending things.

Code	Adhesive/help adhesive	Adhesive type	BW (gsm)	Thickness (m)	CDWT (kg/3″)	S-CDWT (kg/3″)	S-CDWT-M (kg/3″)	Stiffness g power
									3025	100/0	R	58.42	1.23	1.003	0	0	200
3026	100/0	R	58.68	0.76	1.953	0	0	214
									3007	75/25	R	60.23	1.19	0.942	0	0	189
3008	75/25	R	59.38	1.03	1.161	0	0
									3009	75/25	R	59.73	0.92	1.243	0	0
30l0	75/25	R	61.10	0.80	1.713	0	0	181
									3021	65/35	R	62.24	1.17	0.988	0	0.050	177
3022	65/35	R	62.07	0.81	1.800	0.030	0.200	167
									3024	55/45	R	58.95	1.23	0.853	0	0.100	145
3023	55/45	R	59.01	0.78	1.608	0.150	0.230	141
									2812	65/35	P	59.1	1.37	0.735	0	0
2813	65/35	P	59.4	1.41	0.723	0	0

Along with the percentage of salt-sensitive binder in blend drops to 55% from 100%, only CDWT has moderate raising under constant dry volume.In adhesive blending thing under the composition of 65% salt-sensitive binder, in the divalent cation solution of 200ppm, soak base material after 1 hour and begin to keep more most its wet strength.Along with being reduced to below 65% or 65% at thin slice densification and the salt-sensitive binder percentage in blend before first adhesive application, immersion kept bigger intensity after 1 hour in DI water or 200ppm divalent cation solution, compared with the same composition under higher dry volume (dry bulk).These embodiment have disclosed by raising and have helped binder content, no matter be with or without the additional densification of thin slice, all begin to influence the base material dispersiveness.

Result in the table 25 also shows, along with the thickness of drying slice before adhesive application is compressed, CDWT is greatly improved.Code 3007 to 3010 shows, improves CDWT accordingly with the dry volume (bulk) that reduces, and does not have the loss of base material dispersiveness under constant adhesive condition.

Based on Handle-O-Meter result (stiffness), appear to when the percentage of salt-sensitive binder in the blend reduces, the CD stiffness of base material can descend.

Embodiment 31

Prepare the base material of in table 26, listing according to the method for in embodiment 10 and 23, describing.Each base material contains paper pulp (CF405) and 20% adhesive.Described adhesive has the SSB/ that provides and helps adhesive blending thing in table 26.Dur-O-Set RB helps adhesive.Described base material is transformed into the roll web form and uses the solution Q moistening (solution D) of table 19.Surveyingpin goes out the needed peeling force of product for debatching from the skin of the centreless coiled material of the pre-hygenic towelette of the method described in embodiment 25.The outcome record of these tests is in following table 26.

The peel force results of table 26. coreless roll coil paper.

Code	% adhesive in the sheet material	Adhesive blending thing	Adhesive/help adhesive	BW (gsm)	Thickness (mm)	Peeling force (g)
							3026	20	100/0	R/1	58.68	0.76	142
3010	20	75/25	R/1	61.10	0.80	139
							3022	20	65/35	R/1	62.07	0.81	116
3023	20	55/45	R/1	59.01	0.78	111

In this case, the percentage that reduces salt-sensitive binder in the blend will reduce peeling force.

Embodiment 32

According to the information in the following table 27, use SSB adhesive (referring to table 15) and Dur-O-Set RB to help 75/25 blend of adhesive (table 16 help adhesive), and similarly prepare sample among the embodiment 10.TENSILE STRENGTH result in the table 27 has shown the good dispersion under the product condition of certain limit.

The adhesive of table 27. certain limit and the TENSILE STRENGTH result of substrate properties.

The % adhesive	Adhesive/help adhesive	SSB MW	BW (gsm)	Thickness (mm)	CDWT (kg/3″)	S-CDWT (kg/3″)	S-CDWT-M (kg/3″)
								20	O/1	632000	52.5	1.19	0.728	0	0
20	Q/1	575000	54.19	0.75	1.372	0	0
								15.2	J/1	710000	55.2	1.47	0.320	0	0
24	L/1	834000	60.4	0.92	1.070	0	0
								20	D/1	548000	62.5	1.32	0.900	0	0
20	H/1	790000	63.1	1.3	1.070	0	0
								22	R/1	638000	66.47	0.76	2.273	0	0
20	C/1	604,000	74.4	1.47	1.120	0	0

The sample of report has illustrated binder content in the table 27, basic weight, and in these scopes of sheet thickness (can produce dispersible base material according to it) some.

Embodiment 33

Use SSB adhesive (referring to table 15) and help 75/25 blend of adhesive (referring to table 16), generally and among the embodiment 10 similarly prepare sample, as indicating in the table 28.All base materials contain that 15% the 6mm that accounts for fibre blend is wrinkling, the Lyocell (Accordis) and 85% soft wood pulp (CF405) of 2.4 dtexs.All base material is made up of 19% adhesive and 81% adhesive blending thing.

The adhesive of table 28. certain limit and the TENSILE STRENGTH result of substrate properties.

Adhesive/help adhesive	SSB MW	BW (gsm)	Thickness (mm)	DWT (k3″)	S-CDWT (KG/3″)	S-CDWT-M (KG/3″)
							L/1	845,000	61.1	1.17	0.960	0	0
W/1	734,000	60.2	1.17	0.960	0	0.198
							AB/1	544,000	56.2	0.95	1.060	0	0
AB/2	544,000	58.6	1.06	0.990	0	0.205
							E/2	609,000	58.3	1.08	0.969	0	0

In the table 28, in 200ppm divalent cation solution, soak at least 75% (S-CDWT-M) of 1 hour afterwards whole their wet strength of sample loss.The main distinction in these samples is that SSB forms, as indicated in the table 15.Compare with AB with salt-sensitive binder W, salt-sensitive binder L has identical composition with E but different molecular weight (referring to table 15).Salt-sensitive binder W has identical composition but different molecular weight with AB.As if under the situation that does not help adhesive, W/1 and AB/2 treated base material are not so good as L/1 and E/2 treated base material and can disperse like that.The molecular weight that reduces described salt-sensitive binder can be used for making more dispersible base material, shown in base material AB/1.Or the composition that changes salt-sensitive binder can be used for making more dispersible base material, and is illustrated as L/1 and E/2.Therefore, molecular composition by changing described salt-sensitive binder or its molecular weight can produce abundant dispersible blend.Additionally, by selecting different the help adhesive chemistry character more compatible, can produce abundant dispersible adhesive blending thing, shown in base material AB/2 and AB/1 with salt-sensitive binder.

Embodiment 34

Contain the 6%NMA crosslinking agent of having an appointment, AirFlex 105 (Air Products, Allentown, PA), the latax and the SSB code H of table 15 carry out blending according to the ratio of 75 parts of SSB and 25 parts of latex particles, and curtain coating becomes to have 8 bar shapes (bar) of size 1cm * 4cm * 3mm, as illustrated among the embodiment 9.By preparing four bar shapes one night at 60 ℃ of air dryings, meanwhile other four bar shapes are following dry 3 hours at 167 ℃.The 4%NaCl solution neutralization that two bar shapes of each group are placed into 30mL was then separately left standstill 1 hour, utilized gravimetry to measure solubility after this.Basically be insoluble in the salting liquid fully from two groups bar shapes (two kinds of drying conditions).Residue bar shape from each group is placed in the 30ml hard water under about 23 ℃ that contains 200ppm calcium and magnesium ion (by 2: 1 ratios) separately, leaves standstill 1 hour.At 167 ℃ of two bar shapes insoluble fully basically (0% solubilized) that descend drying and put into hard water.Two bar shapes down dry at 60 ℃ and that put into hard water are respectively 54% and 53% solubilized, and this is unexpected low, suppose that latex is uncrosslinked basically when dry under this temperature.Yet, when latex mixes with SSB some taking place solidifies, this illustrates consistency problem possible between two kinds of mixtures, so solubility is influenced, or some particles that solidify can't pass through filter paper.Some NMA crosslinking agents in the Airflex latex also might promote the crosslinked or gelation of blend.Though can believe, more compatible latax will obtain higher solubility, but (for example also can believe than the low cross-linking agent content, be lower than 6%, specifically be lower than 2%, more particularly be lower than 1% and the most specifically be lower than 0.3% crosslinking agent, based on solid masses) the adhesive that helps help to keep the high-dissolvability of described dry polymer blend.

Fig. 1 shows the wet stretching result of the air-laid substrate of handling, and wherein tests in different salting liquids or hard water.According to the substrate of embodiment 10 preparation air-laids and 20% additional amount of the salt-sensitive binder composition that is labeled as code X, code Y and code Z is provided.Code X contains 60% acrylic acid, 10.5% 2-ethylhexyl acrylate, and the binder polymer of 24.5% butyl acrylate and 5%NaAMPS comes polymerization according to embodiment 1, has 1.3 hundred ten thousand molecular weight, corresponding to the code B in the table 15.Code Y is similarly but has about 550,000 molecular weight, corresponding to the code D in table 15.Code Z is similarly but has 62% acrylic acid and 8.5% 2-ethylhexyl acrylate as monomer, has about 1.2 hundred ten thousand molecular weight, corresponding to the code G in the table 15.All adhesive and Dur-O-Set RB help adhesive by ratio blending in 75: 25.Similarly dry among thin slice of handling and the embodiment 10, use 4% or the 1.5%NaCl solution wetted then.Carry out the wet tensile strength test according to the CDWT rules, but have the exception (for example using 1-inch wide strip and MTS cupping machine) described in embodiment 5.

The CD tension test of soaking for sample with 4% formulations prepared from solutions.For shown four hurdles (some of them are not seen because of null value) of each code corresponding to the result who obtains from four different tests.Two hurdles of beginning be thin slice 4% or 1.5%NaCl solution in " originally " CDWT value.Third and fourth hurdle is for S-CDWT-M (hard water immersion) result 1 hour and 3 hours for each thin slice of 4% solution wetted.

The result is presented at good wet strength under two kinds of situations of 1.5%NaCl and 4%NaCl, has excellent loss of strength (100% hard water dispersiveness) for the thin slice of handling with code Y, the good strength loss of code Z and the residual strength of code X.Code X and code Y contrast have disclosed decrease in molecular weight and have solidified the dispersiveness that promotes salt-sensitive binder.

Fig. 2 shown when the thin slice of the 68gsm cork air-laid that contains the ion-sensitive type adhesive is soaked in the solution that contains calcium ion, and how wet tensile strength is passed and the chart (reporting as CDWT (in gram)/every 2.54cm in certain soak time scope) that changes in time.With the wet thin slice of 20 weight % adhesives preparation, adhesive contains 85%Lion, and (Tokyo, Japan) SSB-3b acrylic type terpolymer and 15%Dur-O-Set RB (National Starch) help adhesive.After drying, thin slice is with containing 0.9%NaCl, the solution wetted of 0.5% phosphatide CDM (Mona) and 0.5%Mackstat H-66, and shown the wet strength of about 400g/in (or g/2.54cm).The solution additional amount is 250%, based on the dry weight of thin slice.The thin slice of handling then contain 0,13,29 and the water of the no NaCl of the calcium ion of 109ppm level in soak, obtained four curves shown in Fig. 2 for wet tensile/time.Under the 109ppm calcium ion, there is not loss of strength basically.In the 29ppm calcium ion, kept being higher than the intensity of 100g/in.As if show, in water in addition a spot of calcium ion will disturb dispersiveness with the thin slice of Lion SSB-3b product treatment.

Fig. 3 will take from Fig. 2 Lion SSB-3b product two data groups (being designated as code 3300) with according to 75/25 ratio blending the sulfonated salts sensitive binder of Dur-O-SetRB polymer compare.The data group that is designated as code 2102 relates to the 65-gsm thin slice that contains the sulfonated salts sensitive binder, and this is corresponding to the SSB code H in the table 15.This thin slice solution wetted that is described in the table 4.The solution additional amount is 225%, based on the dry weight of thin slice.In being immersed in hard water, even under the calcium ion concentration of 257ppm, described adhesive formulation has shown the rapid decline of TENSILE STRENGTH, and therefore good triggering is arranged.Therefore, be improved on the dispersibility of sulfonated salts sensitive binder of the present invention in hard water, compare with the acrylic type terpolymer of prior art.

TENSILE STRENGTH result among Fig. 2 and Fig. 3 uses the MTS tensile test equipment, and MTS 500/S device (MTS Systems, Research Park, North Carolina) obtains by TestworksTM 3.10 versions that use Windows software.The nominal 3-inch strip that replaces test usefulness uses the wide strip of 1-inch, is cut into 6 inchages.Clamping length between the binder that scribbles rubber of testing equipment is 3 inches.Test is to operate under the regulation crosshead speed of 12in/min.

Certainly, should be understood that, above only relate to some disclosed embodiment of the present invention, and under the prerequisite that does not break away from the spirit and scope of the present invention of illustrating by claims, can do many improvement or modification.

Claims (84)

1. has hygenic towelette greater than the use TENSILE STRENGTH of 100g/in, wherein hygenic towelette soaks in the running water of the concentration with one or more multivalent ions that are lower than 200ppm and had the TENSILE STRENGTH that is lower than 50g/in in about 1 hour afterwards, wherein said hygenic towelette comprises with the saturated in addition pieces of fabric of moisturizing compositions, described pieces of fabric comprises fibrous material and ion-sensitive type adhesive composition, and described moisturizing compositions contains the organic solvent that is lower than 10 weight %.

2. the hygenic towelette of claim 1, wherein hygenic towelette has to soak greater than the use TENSILE STRENGTH of 150g/in with in the running water of the concentration with one or more multivalent ions that are lower than 200ppm and has the TENSILE STRENGTH that is lower than 50g/in after 1 hour.

3. the hygenic towelette of claim 1, wherein hygenic towelette has to soak greater than the use TENSILE STRENGTH of 200g/in with in the running water of the concentration with one or more multivalent ions that are lower than 200ppm and has the TENSILE STRENGTH that is lower than 50g/in after 1 hour.

4. the hygenic towelette of claim 1, wherein hygenic towelette has to soak greater than the use TENSILE STRENGTH of 100g/in with in the running water of the concentration with one or more multivalent ions that are lower than 200ppm and has the TENSILE STRENGTH that is lower than 20g/in after 1 hour.

5. the hygenic towelette of claim 1, wherein hygenic towelette has to soak greater than the use TENSILE STRENGTH of 200g/in with in the running water of the concentration with one or more multivalent ions that are lower than 200ppm and has the TENSILE STRENGTH that is lower than 20g/in after 1 hour.

6. the hygenic towelette of claim 1, wherein hygenic towelette has to soak greater than the use TENSILE STRENGTH of 300g/in with in the running water of the concentration with one or more multivalent ions that are lower than 200ppm and has the TENSILE STRENGTH that is lower than 20g/in after 1 hour.

7. the hygenic towelette of claim 1, wherein hygenic towelette has to soak greater than the use TENSILE STRENGTH of 100g/in with in the running water of the concentration with one or more multivalent ions that are lower than 200ppm and has the TENSILE STRENGTH that is lower than 10g/in after 1 hour.

8. the hygenic towelette of claim 1, wherein hygenic towelette has to soak greater than the use TENSILE STRENGTH of 150g/in with in the running water of the concentration with one or more multivalent ions that are lower than 200ppm and has the TENSILE STRENGTH that is lower than 10g/in after 1 hour.

9. the hygenic towelette of claim 1, wherein hygenic towelette has to soak greater than the use TENSILE STRENGTH of 200g/in with in the running water of the concentration with one or more multivalent ions that are lower than 200ppm and has the TENSILE STRENGTH that is lower than 10g/in after 1 hour.

10. the hygenic towelette of claim 1, wherein hygenic towelette has to soak greater than the use TENSILE STRENGTH of 300g/in with in the running water of the concentration with one or more multivalent ions that are lower than 200ppm and has the TENSILE STRENGTH that is lower than 10g/in after 1 hour.

11. the hygenic towelette of claim 1, wherein hygenic towelette has to soak greater than the use TENSILE STRENGTH of 100g/in with in the running water of the concentration with one or more multivalent ions that are lower than 50ppm and has the TENSILE STRENGTH that is lower than 30g/in after 1 hour.

12. the hygenic towelette of claim 1, wherein hygenic towelette has to soak greater than the use TENSILE STRENGTH of 200g/in with in the running water of the concentration with one or more multivalent ions that are lower than 50ppm and has the TENSILE STRENGTH that is lower than 30g/in after 1 hour.

13. the hygenic towelette of claim 1, wherein hygenic towelette has to soak greater than the use TENSILE STRENGTH of 300g/in with in the running water of the concentration with one or more multivalent ions that are lower than 50ppm and has the TENSILE STRENGTH that is lower than 30g/in after 1 hour.

14. each hygenic towelette in the claim 1～13, wherein moisturizing compositions contains the organic solvent that is lower than 4 weight %.

15. the hygenic towelette of claim 14, wherein moisturizing compositions contains the organic solvent that is lower than 1 weight %.

16. the hygenic towelette of claim 14, wherein moisturizing compositions does not contain organic solvent.

17. the hygenic towelette of claim 1, wherein moisturizing compositions contains the reactive compound of at least 1 weight % concentration, based on the weight of moisturizing compositions.

18. the hygenic towelette of claim 17, wherein reactive compound contains monovalent salt.

19. the hygenic towelette of claim 17, wherein reactive compound exists with the concentration of 1 weight %-10 weight %, based on the weight of moisturizing compositions.

20. the hygenic towelette of claim 19, wherein reactive compound exists with the concentration of 1 weight %-5 weight %, based on the weight of moisturizing compositions.

21. the hygenic towelette of claim 20, wherein reactive compound exists with the concentration of 4 weight %.

22. the hygenic towelette of claim 17, wherein reactive compound is a sodium chloride.

23. the hygenic towelette of claim 1, wherein the ion-sensitive type adhesive composition contains at least a ion-sensitive type polymer and helps adhesive.

24. the hygenic towelette of claim 23, wherein said ion-sensitive type polymer be at least a from (A) acrylic acid and methacrylic acid and (B) one or more alkyl acrylates form.

25. being one or more monomers from be selected from acrylic acid, 2-acrylamido-2-methyl isophthalic acid-propane sulfonic acid, 2-acrylamido-2-methyl isophthalic acid-propane sulfonic acid sodium salt, butyl acrylate and 2-ethylhexyl acrylate, the hygenic towelette of claim 23, wherein said ion-sensitive type polymer form.

26. each hygenic towelette in the claim 23～25, the wherein said adhesive that helps is selected from noncrosslinking poly-(ethane-acetic acid ethyenyl ester), noncrosslinking poly-(styrene-butadiene) and noncrosslinking poly-(styrene-propene acid).

27. the hygenic towelette of claim 26, the wherein said adhesive that helps is poly-(ethane-acetic acid ethyenyl ester) of non-crosslinked.

28. the hygenic towelette of claim 23, wherein, described ion-sensitive type adhesive composition is the acrylic ternary copolymer of azochlorosulfonate acid anion modification, the described adhesive that helps is poly-(ethane-acetic acid ethyenyl ester) of non-crosslinked, wherein said adhesive composition is insoluble in the neutral salt solution that contains 1 weight % salt at least, described salt comprise one or more monovalent ions and wherein adhesive composition can be scattered in the water that contains one or more multivalent ions of 200ppm at the most.

29. can being scattered in, the hygenic towelette of claim 28, wherein said adhesive composition contain 15ppm in the water of one or more multivalent ions of 200ppm.

30. can being scattered in, the hygenic towelette of claim 28, wherein said adhesive composition contain 15ppm in the water of one or more multivalent ions of 150ppm.

31. can being scattered in, the hygenic towelette of claim 28, wherein said adhesive composition contain 15ppm in the water of one or more multivalent ions of 100ppm.

32. can being scattered in, the hygenic towelette of claim 28, wherein said adhesive composition contain 15ppm in the water of one or more multivalent ions of 50ppm.

33. the hygenic towelette of claim 28, wherein said adhesive composition can be scattered in the water that contains one or more multivalence multivalent ions that are lower than 10ppm.

34. being insoluble to, the hygenic towelette of claim 28, wherein said adhesive composition contain 1 weight % in the neutral salt solution of 5.0 weight % salt.

35. being insoluble to, the hygenic towelette of claim 28, wherein said adhesive composition contain 1 weight % in the neutral salt solution of 3.0 weight % salt.

36. the hygenic towelette of claim 28, wherein said multivalent ion comprises Ca ²⁺Ion, Mg ²⁺Ion, Zn ²⁺Ion or its combination.

37. the hygenic towelette of claim 28, wherein said monovalent ion comprises Na ⁺Ion, Li ⁺Ion, K ⁺Ion, NH ₄ ⁺Ion or its combination.

38. the hygenic towelette of claim 28, the acrylic ternary copolymer of wherein said azochlorosulfonate acid anion modification contain at least a in (a) acrylic acid and the methacrylic acid and (b) one or more alkyl acrylates.

39. the hygenic towelette of claim 28, the acrylic ternary copolymer of wherein said azochlorosulfonate acid anion modification is from acrylic acid; 2-acrylamido-2-methyl isophthalic acid-propane sulfonic acid, 2-acrylamido-2-methyl isophthalic acid-propane sulfonic acid sodium salt or its both combination; Butyl acrylate; And 2-ethylhexyl acrylate formation.

40. the hygenic towelette of claim 28, the acrylic ternary copolymer of wherein said azochlorosulfonate acid anion modification is from acrylic acid; 2-acrylamido-2-methyl isophthalic acid-propane sulfonic acid; 2-acrylamido-2-methyl isophthalic acid-propane sulfonic acid sodium salt; Butyl acrylate; Form with 2-ethylhexyl acrylate.

41. the hygenic towelette of claim 28, the acrylic ternary copolymer of wherein said azochlorosulfonate acid anion modification are to the acrylic acid that is lower than 80 moles of % from 35 moles of %; 2-acrylamido-2-methyl isophthalic acid-propane sulfonic acid, 2-acrylamido-2-methyl isophthalic acid-propane sulfonic acid sodium salt or its both combination greater than 0 mole of % to 20 mole of %; Greater than 0 mole % to 65 mole % butyl acrylate; And form greater than 0 mole % to 45 mole % 2-ethylhexyl acrylate.

42. the hygenic towelette of claim 41, the acrylic ternary copolymer of wherein said azochlorosulfonate acid anion modification contain 50 moles of % to the acrylic acid that is lower than 67 moles of %; 2-acrylamido-2-methyl isophthalic acid-propane sulfonic acid, 2-acrylamido-2-methyl isophthalic acid-propane sulfonic acid sodium salt or its both combination greater than 0 mole of % to 10 mole of %; The butyl acrylate of 15 moles of % to 28 mole of %; 2-ethylhexyl acrylate with 7 moles of % to 15 mole of %.

43. the hygenic towelette of claim 42, the acrylic ternary copolymer of wherein said azochlorosulfonate acid anion modification contain 57 moles of % to the acrylic acid that is lower than 66 moles of %; 2-acrylamido-2-methyl isophthalic acid-propane sulfonic acid of 1 mole of % to 6 mole of %, 2-acrylamido-2-methyl isophthalic acid-propane sulfonic acid sodium salt or its both combination; The butyl acrylate of 15 moles of % to 28 mole of %; 2-ethylhexyl acrylate with 7 moles of % to 13 mole of %.

44. the hygenic towelette of claim 43, the acrylic ternary copolymer of wherein said azochlorosulfonate acid anion modification contain 60 moles of % acrylic acid; 2-acrylamido-2-methyl isophthalic acid-propane sulfonic acid of 5 moles of %, 2-acrylamido-2-methyl isophthalic acid-propane sulfonic acid sodium salt or its both combination; 24.5 mole % butyl acrylate; With 10.5 moles of % 2-ethylhexyl acrylates.

45. each described hygenic towelette of claim 28～44, wherein said adhesive composition contain the acrylic ternary copolymer of azochlorosulfonate acid anion modification of 65 to 75 weight % and noncrosslinking poly-(ethane-acetic acid ethyenyl ester) of 35 to 25 weight %.

46. the hygenic towelette of claim 45, wherein this pieces of fabric comprises:

The wood pulp of 78 to 83 weight % with the fibre length that is lower than 15mm; With 22 weight % applying on it and in addition dry adhesive composition to 17 weight %, wherein adhesive composition contains noncrosslinking poly-(ethane-acetic acid ethyenyl ester) of 65 weight % to the acrylic ternary copolymer of the azochlorosulfonate acid anion modification of 75 weight % and 25 weight % to 35 weight %; With

Wherein, described moisturizing compositions contains:

92.88 the deionized water of weight %;

4.00 the sodium chloride of weight %;

1.00 one or more preservative agents of weight %, this preservative agent comprise glycerine, butyl carbamic acid iodine propinyl ester and dihydroxymethyl dimethyl hydantoin;

1.00 the surfactant that contains acyl glutamate of weight %;

0.50 one or more polysiloxane emulsions of weight %, this polysiloxane emulsion comprise dimethyl silicone polymer and triethanolamine dodecyl benzene sulfonate;

0.25 the emollient that contains PEG-75 lanolin of weight %;

0.05 one or more spices of weight %;

0.25 the spices solubilizer that contains polysorbate 20 of weight %; With

0.07 the pH regulator agent that contains malic acid of weight %.

47. each hygenic towelette of claim 28～44, wherein said adhesive composition contain the acrylic ternary copolymer of azochlorosulfonate acid anion modification of 75 weight % and noncrosslinking poly-(ethane-acetic acid ethyenyl ester) of 25 weight %.

48. each hygenic towelette of claim 28～44, wherein said fibrous material comprises one or more layers woven fabric, supatex fabric, knitted fabric or its combination.

49. the hygenic towelette of claim 48, wherein said fibrous material comprises one or more layers supatex fabric.

50. the hygenic towelette of claim 48, wherein said fibrous material contain length 15mm or lower fiber.

51. the hygenic towelette of claim 50, wherein said fibrous material comprise natural fabric, synthetic fiber or its combination.

52. the hygenic towelette of claim 51, wherein said fibrous material contains one or more fibers, and described fiber comprises cotton, flax, jute, hemp, cashmere, wood pulp, viscose silk, bemsilk, cellulose acetate, polyester, polyamide and polyacrylic acid.

53. the hygenic towelette of claim 52, wherein fibrous material comprises wood pulp.

54. be used for the moisturizing compositions of hygenic towelette, this hygenic towelette has the use TENSILE STRENGTH greater than 100g/in, wherein hygenic towelette soaks in the running water of the concentration with one or more multivalent ions that are lower than 200ppm and had the TENSILE STRENGTH that is lower than 50g/in in about 1 hour afterwards, wherein said hygenic towelette comprises with the saturated in addition pieces of fabric of moisturizing compositions, described pieces of fabric comprises fibrous material and ion-sensitive type adhesive composition, and described moisturizing compositions contains:

86 to 98 weight % deionized waters;

1 to 6 weight % is as the sodium chloride of reactive compound;

One or more preservative agents of 2 weight % at the most;

One or more surfactants of 2 weight % at the most;

One or more polysiloxane emulsions of 1 weight % at the most;

One or more emollients of 1 weight % at the most;

One or more spices of 0.3 weight % at the most;

One or more spices solubilizer of 0.5 weight % at the most; With

One or more pH regulator agent of 0.5 weight % at the most.

55. the moisturizing compositions of claim 54, wherein said moisturizing compositions contains:

The deionized water of 86 to 98 weight %;

The sodium chloride of 1 to 6 weight % as reactive compound;

Greater than one or more preservative agents of 0 to 2 weight %, this preservative agent comprises glycerine, butyl carbamic acid iodine propinyl ester and dihydroxymethyl dimethyl hydantoin;

The surfactant that contains acyl glutamate greater than 0 to 2 weight %;

Greater than one or more polysiloxane emulsions of 0 to 1 weight %, this polysiloxane emulsion comprises dimethyl polysiloxane and triethanolamine dodecyl benzene sulfonate;

The emollient that contains PEG-75 lanolin greater than 0 to 1 weight %;

One or more spices greater than 0 to 0.3 weight %;

The spices solubilizer that contains polysorbate 20 greater than 0 to 0.5 weight %; With

The pH regulator agent that contains malic acid greater than 0 to 0.2 weight %.

56. the moisturizing compositions of claim 55, wherein said moisturizing compositions contains:

92.88 the deionized water of weight %;

4.00 the sodium chloride of weight % as reactive compound;

1.00 one or more preservative agents of weight %, this preservative agent comprise glycerine, butyl carbamic acid iodine propinyl ester and dihydroxymethyl dimethyl hydantoin;

1.00 the surfactant that contains acyl glutamate of weight %;

0.50 one or more polysiloxane emulsions of weight %, this polysiloxane emulsion comprise dimethyl silicone polymer and triethanolamine dodecyl benzene sulfonate;

0.25 the emollient that contains PEG-75 lanolin of weight %;

0.05 one or more spices of weight %;

0.25 the spices solubilizer that contains polysorbate 20 of weight %; With

0.07 the pH regulator agent that contains malic acid of weight %.

57. make the method for hygenic towelette, this hygenic towelette has greater than the use TENSILE STRENGTH of 100g/in, wherein hygenic towelette soaks in the running water of the concentration with one or more multivalent ions that are lower than 200ppm and had the TENSILE STRENGTH that is lower than 50g/in in about 1 hour afterwards, wherein said hygenic towelette comprises with the saturated in addition pieces of fabric of moisturizing compositions, described pieces of fabric comprises fibrous material and ion-sensitive type adhesive composition, described moisturizing compositions contains the organic solvent that is lower than 10 weight %, said method comprising the steps of:

Form the thin slice of fibrous material;

Described adhesive composition and moisturizing compositions are applied on the described thin slice.

58. can being scattered in, the method for claim 57, wherein said adhesive composition contain 15ppm in the water of one or more multivalent ions of 200ppm.

59. can being scattered in, the method for claim 57, wherein said adhesive composition contain 15ppm in the water of one or more multivalent ions of 150ppm.

60. can being scattered in, the method for claim 57, wherein said adhesive composition contain 15ppm in the water of one or more multivalent ions of 100ppm.

61. can being scattered in, the method for claim 57, wherein said adhesive composition contain 15ppm in the water of one or more multivalent ions of 50ppm.

62. the method for claim 57, wherein said adhesive composition can be scattered in the water that contains one or more multivalent ions that are lower than 10ppm.

63. being insoluble to, the method for claim 57, wherein said adhesive composition contain 1 weight % in the neutral salt solution of 5.0 weight % salt.

64. being insoluble to, the method for claim 57, wherein said adhesive composition contain 1 weight % in the neutral salt solution of 3.0 weight % salt.

65. the method for claim 57, wherein said multivalent ion comprises Ca ²⁺Ion, Mg ²⁺Ion, Zn ²⁺Ion or its combination.

66. the method for claim 57, wherein said monovalent ion comprises Na ⁺Ion, Li ⁺Ion, K ⁺Ion, NH ₄ ⁺Ion or its combination.

67. the method for claim 57, the acrylic ternary copolymer of wherein said azochlorosulfonate acid anion modification contain at least a in (a) acrylic acid and the methacrylic acid and (b) one or more alkyl acrylates.

68. the method for claim 57, the acrylic ternary copolymer of wherein said azochlorosulfonate acid anion modification is from acrylic acid; 2-acrylamido-2-methyl isophthalic acid-propane sulfonic acid, 2-acrylamido-2-methyl isophthalic acid-propane sulfonic acid sodium salt or its both combination; Butyl acrylate; And 2-ethylhexyl acrylate formation.

69. the method for claim 57, the acrylic ternary copolymer of wherein said azochlorosulfonate acid anion modification is from acrylic acid; 2-acrylamido-2-methyl isophthalic acid-propane sulfonic acid; 2-acrylamido-2-methyl isophthalic acid-propane sulfonic acid sodium salt; Butyl acrylate; Form with 2-ethylhexyl acrylate.

70. the method for claim 57, the acrylic ternary copolymer of wherein said azochlorosulfonate acid anion modification are to the acrylic acid that is lower than 80 moles of % from 35 moles of %; Greater than 2-acrylamido-2-methyl isophthalic acid-propane sulfonic acid, the 2-acrylamido-2-methyl isophthalic acid-propane sulfonic acid sodium salt of 0 mole of % to 20 mole of %, or its both combination; Greater than 0 mole % to 65 mole % butyl acrylate; And form greater than 0 mole % to 45 mole % 2-ethylhexyl acrylate.

71. the method for claim 70, the acrylic ternary copolymer of wherein said azochlorosulfonate acid anion modification contain 50 moles of % to the acrylic acid that is lower than 67 moles of %; 2-acrylamido-2-methyl isophthalic acid-propane sulfonic acid, 2-acrylamido-2-methyl isophthalic acid-propane sulfonic acid sodium salt or its both combination greater than 0 mole of % to 10 mole of %; The butyl acrylate of 15 moles of % to 28 mole of %; 2-ethylhexyl acrylate with 7 moles of % to 15 mole of %.

72. the method for claim 71, the acrylic ternary copolymer of wherein said azochlorosulfonate acid anion modification contain 57 moles of % to the acrylic acid that is lower than 66 moles of %; 2-acrylamido-2-methyl isophthalic acid-propane sulfonic acid of 1 mole of % to 6 mole of %, 2-acrylamido-2-methyl isophthalic acid-propane sulfonic acid sodium salt or its both combination; The butyl acrylate of 15 moles of % to 28 mole of %; 2-ethylhexyl acrylate with 7 moles of % to 13 mole of %.

73. the method for claim 72, the acrylic ternary copolymer of wherein said azochlorosulfonate acid anion modification contain 60 moles of % acrylic acid; 2-acrylamido-2-methyl isophthalic acid-propane sulfonic acid of 5 moles of %, 2-acrylamido-2-methyl isophthalic acid-propane sulfonic acid sodium salt or its both combination; 24.5 mole % butyl acrylate; With 10.5 moles of % 2-ethylhexyl acrylates.

74. the method for claim 57, wherein said adhesive composition contain the acrylic ternary copolymer of azochlorosulfonate acid anion modification of 65 to 75 weight % and noncrosslinking poly-(ethane-acetic acid ethyenyl ester) of 35 to 25 weight %.

75. the method for claim 74, wherein said adhesive composition contain the acrylic ternary copolymer of azochlorosulfonate acid anion modification of 75 weight % and noncrosslinking poly-(ethane-acetic acid ethyenyl ester) of 25 weight %.

76. the method for claim 57, wherein said fibrous material comprise one or more layers woven fabric, supatex fabric, knitted fabric or its combination.

77. the method for claim 76, wherein said fibrous material comprises one or more layers supatex fabric.

78. the method for claim 76, wherein said fibrous material contain length 15mm or lower fiber.

79. the method for claim 57, wherein said fibrous material comprise natural fabric, synthetic fiber or its combination.

80. the method for claim 79, wherein said fibrous material contains one or more fibers, and described fiber comprises cotton, flax, jute, hemp, cashmere, wood pulp, viscose silk, bemsilk, cellulose acetate, polyester, polyamide and polyacrylic acid.

81. the method for claim 57, wherein said fibrous material comprises wood pulp.

82. the method for claim 57, wherein said moisturizing compositions contains:

86 to 98 weight % deionized waters;

1 to 6 weight % is as the sodium chloride of reactive compound;

One or more preservative agents of 2 weight % at the most;

One or more surfactants of 2 weight % at the most;

One or more polysiloxane emulsions of 1 weight % at the most;

One or more emollients of 1 weight % at the most;

One or more spices of 0.3 weight % at the most;

One or more spices solubilizer of 0.5 weight % at the most; With

One or more pH regulator agent of 0.5 weight % at the most.

83. the method for claim 82, wherein said moisturizing compositions contains:

The deionized water of 86 to 98 weight %;

The sodium chloride of 1 to 6 weight % as reactive compound;

Greater than one or more preservative agents of 0 to 2 weight %, this preservative agent comprises glycerine, butyl carbamic acid iodine propinyl ester and dihydroxymethyl dimethyl hydantoin;

The surfactant that contains acyl glutamate greater than 0 to 2 weight %;

Greater than one or more polysiloxane emulsions of 0 to 1 weight %, this polysiloxane emulsion comprises dimethyl polysiloxane and triethanolamine dodecyl benzene sulfonate;

The emollient that contains PEG-75 lanolin greater than 0 to 1 weight %;

One or more spices greater than 0 to 0.3 weight %;

The spices solubilizer that contains polysorbate 20 greater than 0 to 0.5 weight %; With

The pH regulator agent that contains malic acid greater than 0 to 0.2 weight %.

84. the method for claim 83, wherein said moisturizing compositions contains:

92.88 the deionized water of weight %;

4.00 the sodium chloride of weight % as reactive compound;

1.00 one or more preservative agents of weight %, this preservative agent comprise glycerine, butyl carbamic acid iodine propinyl ester and dihydroxymethyl dimethyl hydantoin;

1.00 the surfactant that contains acyl glutamate of weight %;

0.50 one or more polysiloxane emulsions of weight %, this polysiloxane emulsion comprise dimethyl silicone polymer and triethanolamine dodecyl benzene sulfonate;

0.25 the emollient that contains PEG-75 lanolin of weight %;

0.05 one or more spices of weight %;

0.25 the spices solubilizer that contains polysorbate 20 of weight %; With

0.07 the pH regulator agent that contains malic acid of weight %.

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