WO1990001325A1

WO1990001325A1 - Skin protection lotion

Info

Publication number: WO1990001325A1
Application number: PCT/US1988/002661
Authority: WO
Inventors: Pierre H. Merat; Ralph Akyuz
Original assignee: Merat Pierre H; Ralph Akyuz
Priority date: 1988-08-05
Filing date: 1988-08-05
Publication date: 1990-02-22

Abstract

A skin protection lotion consisting of a water phase mixture and an oil phase mixture. The two mixtures are mixed together to form a lotion concentrate. The lotion concentrate may be aerosolized in a can that then dispenses a mousse. Either the lotion or the mousse may be applied to an area of skin, such as the hands, to form a thin protective coating that protects the skin from a wide range of hazardous fluids.

Description

SKIN PROTECTION LOTION

TECHNICAL FIELD

The invention pertains to chemical protection means for human skin and more particularly to a lotion means, for protecting human skin, such as hands and the like, from injury or stain due to acids or corrosive substances and to a method of formulating and applying same.

BACKGROUND ART

In many household chores and industrial activities, it is necessary for people to expose their skin, and especially their hands, to hostile environments wherein the skin or hands may become soiled, stained or injured by reason of chemical reactions or the like. For many years, people have searched for methods or means to protect exposed skin, espcially hands, from such unpleasant or dangerous conditions. Rubber or plastic gloves have been proposed to overcome such hazards. However , many gloves are bulky and clumsy and interfere significantly with the wearer's sense of touch. Various lotions or hand creams have been proposed heretofore. However, these have usually been designed for highly specific protection and have failed to provide broad protection, as may be needed where the identity of the hostile sub¬ stance is unknown. In other words, none of the prior art protective lotions etc. have provided protection for a broad range of potential hazards. In contrast, the instant invention proposes a lotion or mousse containing a protective wax and suitable wetting and emulsifying agents, together with a moisture barrier agent and suitable antiseptics, astringents, anti-bacterial agents and emollients to form a thin protective coating over the treated area which will provide protection against a wide range of hostile or hazardous substances.

A search of the prior art did not disclose any patents that read directly on the claims of the instant invention however, the following U.S. patents were considered related:

PATENT NUMBER INVENTOR ISSUED

2,310,889 4,255,550

4,463,156

Each of the above patents discloses a formulation for a protective lotion or cream which is directed at providing protection against a specific type of hazard. However, none of the references suggests a product which provides protection against a wide range of hostile or hazardous substances.

DISCLOSURE OF THE INVENTION

The instant invention discloses a lotion or mousse that is formulated with a protective wax, an emollient and emulsifying agents, together with a moisture barrier agent and suitable antiseptics, astringents, and anti- bacterial agents. The lotion or mousse ..when applied to the skin, will form a thin protective coating over the treated area which provides protection against a wide range of hostile or hazardous substances. The wetting and emulsifying agents serve to distribute the wax over the treated area in a thin layer which prevents unde- sirable substances from penetrating through the layer to reach the protected area underneath. The moisture barrier agent also serves to prevent many undesirable substances from reaching the protected area, while the antiseptics, astringents and anti-bacterial agents serve to counteract or attack many undesirable substances. Thus, the instant invention serves to provide protection against a wide range of hostile or hazardous sub- stances without requiring that the user be aware of the specific substances encountered.

Accordingly, it is an object of the instant inven¬ tion to provide improved chemical protection means for human skin, hands and the like. Another object of the instant invention is to provide chemical protection for human skin, hands and the like against a wide range of hostile or hazardous sub¬ stances.

An additional object of the instant invention is to provide a preparation for human skin, hands and the like, in the nature of a cream or mousse which can be spread on an area to be protected to provide protection against a wide range of hostile or hazardous substances. A specific object of the instant invention is to provide a lotion or mousse containing a wax and suitable wetting and emulsifying agents, together with a moisture barrier agent and suitable antispetics, astringents, anti-bacterial agents and emollients to form a thin protective coating over the treated area which will provide protection against a wide range of hostile or hazardous substances.

These and other objects and features of the instant invention will be apparent from the following detailed description.

BEST MODE FOR CARRYING OUT THE INVENTION

The best mode for carrying out the invention is pre¬ sented in terms of a protective hand lotion that is prepared by mixing a water phase comprising 1.0 -^**- 1.5%

Triethanola ine, as a first emulsifier; 1.5 - 2.5% Sodium Stearate as a water proofing agent; about 0.2% Methyl- paraben, as a preservative and deionized water (as re¬ quired to make the mixture) and heating this mixture to 75 - 80° C.

To this mixture is added an oil phase mixture com¬ prising 1.0 - 4.0% of a wax, such as Stearoxytrimethlsi- lane and Stearyl Alcohol. This substance is available com¬ mercially from Dow Corning Corporation, Midland, Michigan under the trademark -'Dow Corning 05-0158A"; 3.0 - 4.0% Stearic Acid, as a second emulsifier; and 4.0 - 6.0% of an emollient such as Cyclic Dimethyl Polysiloxane, avail¬ able from Dow Corning Corporation under the -trademarks: "Dow Corning 345", "Dow Corning 344", or "Dow Corning X2-1401". The oil phase is heated to 75 - 80° C and- is mixed with the water phase mixture for approximately 15 minutes to form an emulsion.

The emulsion is then allowed to cool to 40° C after which, if desired, a suitable fragrance may be added and the emulsion may be packaged for distribution and sale. For this purpose, approximately 85% of the emulsion, may be mixed with approximately 15% alcohol (SDA-40) to form a lotion concentrate or, if desired, approximately 88% of the lotion concentrate may be aerosolized in a can with approximately 12% of a propellant, such as an Isobutane/ Propane mixture, to form a mousse.

In use, an approximately one inch sphere of the lotion or mousse is applied to the skin area to be pro¬ tected and is rubbed about the area to assure that the area to be protected is thoroughly covered. When this is accomplished, the wetting agent and the e ulsifiers serve to distribute the lotion or mousse over the protected area, in a thin layer, which precludes hostile or hazardous substances from reaching the protected ski .

Virtually all hostile and hazardous materials are precluded, by this thin layer, from reaching the pro¬ tected area of skin. In fact, on numerous occasions, the inventor has applied the lotion to his hands and has demonstrated its effectiveness by pouring a non- concentrated sulfuric acid and various caustic sub¬ stances directly over his hands without any harmful results. Furthermore, it has been found that the lotion concentrate of the instant invention continues to provide such protection for up to 4 to 5 hours and will last through several normal washings without loss of protect¬ ion. Obviously, care must be taken to assure that the skin area to be protected is thoroughly covered with the lotion concentrate. Moreover, it will be apparent that repeated applications of the lotion concentrate will provide greater surety of protection.

If desired, additional protective materials may be added to the basic lotion concentrate described above. Thus, for example, 0.1 - 0.2% Aluminum Acetate may be added during preparation of the water phase as an anti¬ septic and astringent. Similarly, if desired, a suitable moisture barrier, such as a polymer of Hexadecene and Vinylpyrrolidone monomers, availablefrom GAF Industries under the trademark "Ganex V-216" may be added to the oil phase to provide additional protection, Also, if desired, an anti-bacterial agent, such as Benzalkonium Chloride, may be added to the lotion concentrate for yet further protection. Again, if desired, suitable emollients, such as Isostearyl Neopentanoate, or other skin softening or smoothing agents may be added.

EXAMPLE 1

In one formulation of the lotion concentrate of the instant invention, a water phase comprising 1.5% Trie- thanolamine, 1.5% Sodium Stearate, 0.2% Methylparaben and 0.2% Aluminum Acetate were mixed with sufficient deionized water to form a mixture which was then heated to 75 - 80° C. Meanwhile, an oil phase comprising 1.5% Dow Corning 05-0158A wax, 3,0% Stearic Acid, as an emulsifier and 4.0% Dow Corning 344 as an emollient, were mixed together and heated to 75 - 80° C. The water and oil phase mixtures were then mixed for 15 minutes and allowed to cool to 40 C, after which 0.04% of a suitable fragrance was added to complete the formulation.

EXAMPLE 2

In a second formulation of the lotion concentrate of the instant invention, a water phase was formed by mixing 1.0% Triethanolamine, 2.0% Sodium Stearate, 0.2% Methyls paraben and 0.1% Aluminum Acetate with sufficient deionized water to form a mixture which was then heated to 75 - 80° Meanwhile, an oil phase was prepared by mixing 1.0% Dow Corning 05-0158A wax, 4.0% Stearic Acid, 5.0% Dow Corning 345 and 1.0% Dow Corning X2-1401 emollients. This oil phase was heated to 75 - 80 C and was, then mixed with the water phase mixture for 15 minutes. After this, the emulsion was allowed to cool to 40 C and 0.1% of an anti-bacterial agent, Alkyl Dimethyl Benzyl Amonium Chloride, together with 0.04% of a suitable fragrance were added to complete the formulation.

EXAMPLE 3

In a third formulation of the lotion concentrate of the instant invention, a water phase comprising 0.9% Triethanolamine, 1.5% Sodium Stearate and 0.2% Methyl- paraben were mixed with sufficient deionized water to form a mixture and the mixture was heated to 75 - 80 C. Meanwhile, an oil phase was prepared by mixing 4.0% Dow Corning 05-0158A, 3.0% Stearic Acid and 4.% Dow Corning 345. The oil phase was heated to 75 - 80° C and was mixed with the water phase for 15 minutes to form an emulsion which was then cooled to complete the formula¬ tion.

EXAMPLE 4

In a fourth formulation of the lotion concentrate of the instant invention, a water phase was prepared by mixing 1.2% Triethanolamine, 2.5% Sodium Stearate, 0.2% Methylparaben, 0.1% Aluminum Acetate and 0.5% Poly- oxyethylene (12) Nonyl Phenyl Ether, as a wetting agent, with sufficient deionized water to form a mixture and the mixture was heated to 75 - 80° C. Meanwhile, an oil phase was prepared by mixing 1.5% Dow Corning 05-0158A wax, 3.5% Stearic Acid, 3.5% Dow Corning 345 emollient, 0.001% Ganex V-216 moisture barrier and 0.5% of 2,2-Dimethylpropanoic Acid, Iso-octadecyl Ester as an emollient. This oil phase- was heated to 75 - 80° C and was mixed with the water phase for 15 minutes. Thereafter, the emulsion was allowed to cool to 40° C and was mixed with 0.155% of an anti-bacterial agent, Alkyl Dimethyl Benzyl Amonium Chloride, and 0.06% of a suitable fragrance to complete the formulation.

Obviously, numerous other variations and modifi- cations can be made without departing from the spirit of the instant invention. Therefore, it should be clearly understood that the forms of the instant inven¬ tion described above are illustrative only and are not intended to limit its scope.

Claims

CLAIMS1. A skin protection lotion comprising;

1.0 - 1.5% of a first emulsifier, 1.5 - 2.0% of a water proofing agent, about 0.2% of a preservative, deionized water, 1.0 - 4.0% of a suitable wax, 3.0 - 4.0% of a second emulsifier, and 4.0 - 6.0%of an emollient.

2. The lotion as specified in claim 1 wherein said first emulsifier, said water proofing agent, said preservative and said deionized water are mixed together to form a water phase which is then heated to 75 - 80 C prior to combining with the other ingredients.

3. The lotion as specified in claim 2 wherein said wax, said second emulsifier and said emollient are mixed together to form an oil phase which is then heated to 75 - 80 C prior to combining with said water phase.

4. The lotion as specified in claim 1 further comprising 0.1 - 0.2% of an antiseptic and astringent agent.

5. The lotion as specified in claim 1 wherein said first emulsifier is Triethanolamine.

6. The lotion as specified in claim 1 wherein said water proofing agent is sodium stearate.

7. The lotion as specified in claim 1 wherein said preservative is Methylparaben.

8. The lotion^' as specified in claim 1 wherein said wax is Stearoxytrimethylsilane and Stearyl Alcohol.

9. The lotion as specified in claim 1 wherein said second emulsifier is Stearic Acid.

10. The lotion as specified in claim 1 wherein said emollient is Cyclic Dimethyl Polysiloxane.

11. A skin protection lotion comprising; a) a water phase mixture further comprising:

1) 1.0 - 1.5% triethanolamine as a first emulsifier,

2) 1.5 - 2.5% sodium stearate as a water proofing agent, 3) 0.2% methylparaben as a preservative,

4) deionized water as required to make the water phase mixture; b) an oil phase mixture further comprising;

1) 1.0 - 4.0% stearoxytrimethysilane as a wax,

2) 3.0 - 4.0% stearic acid, as a second emulsifier, and

3) 4.0 - 6.0% cylic Dimethyl polysiloxane as an emollient.

12. The lotion as specified in claim 11 wherein: a) said water phase mixture is heated to a temperature between 75 - 80° C, and b) said oil phase mixture is heated to a temperature between 75 - 80° C and is then mixed with said water phase mixture for approximately 15 minutes to form an emulsion.

13. The lotion as specified in claim 12 wherein ssaaiidd eemmuullssiioonn iiss cooled to 40° C and subsequently is packaged for use,

14. The lotion as specified in claim 12 wherein approximately 85% of said emulsion is mixed with approxi- ately 15% alcohol to form a lotion concentrate.

15. The lotion as specified in claim 14 wherein approximately 88% of said lotion concentrate is aerosolized in a can having approximately 12% of a propellant to form a mousse.

16. The lotion as specified in claim 14 wherein said lotion concentrate is applied to the skin area, such as of the hands, to prevent hazardous fluids from reaching the protected hands.

17. The lotion as specified in claim 15 wherein said mousse is applied to the skin area, such as on the hands, to prevent hazardous fluids from reaching the protected hands.

18. The skin protection lotion as specified in claim 14 wherein one formulation of said lotion con¬ centrate comprises; a) a water phase formed by mixing 1.5% Trie¬ thanolamine, 1.5% Sodium Stearate, 0.2% Methylparaben and 0.2% Aluminum Acetate where said water phase is mixed with suf¬ ficient deionized water to form a mixture which is then heated to 75 - 80° C, b) an oil phase formed by mixing 1.5% Dow Corning 05-0158A wax, 3.0% Stearic Acid, as an emulsifier and 4.0% Dow Corning 344 as an emollient where said oil phase is mixed together and heated to 75 - 80° C, and c) said water and oil phase mixtures are mixed for 15 minutes and allowed to cool to 40° C, after which 0.04% of a suitable fragrance is added to the mixture to complete the formulation.

19. The skin protection lotion as specified in claim 14 wherein a second formulation of said lotion concentrate comprises: a) a water phase formed by mixing 1.0% Trie- thanola ine, 2.0% Sodium Stearate, 0.2%

Methylparaben and 0.1% Aluminum Acetate where said water phase is mixed with suf¬ ficient deionized water to form a mixture which is then heated to 75 - 80° C, b) an oil phase formed by mixing 1.0% Dow

Corning 05-0158A wax, 4.0% Stearic Acid, 5.0%Dow Corning 345 and 1.0% Dow Corning X2-1401 as an emollient where said oil phase ix mixed together and heated to 75 - 80° C, and c) said water and oil phase mixtures are mixed for 15 minutes and allowed to cool to 40° C, after which 0.1% of an anti-bacterial agent, Alkyl Dimethyl Benzyl Amonium Chloride, together with 0.04% of a suitable fragrance are added to the mixture to complete the formulation.

20. _A method of formulating a skin protection lotion comprising the steps of: a) preparing a water phase mixture by mixing

1.0 - 1.5% of a first emulsifier with 1.5 - 2.5% of a water proofing agent about 0.2_% of a preservative and sufficient deionized water to form a said water phase mixture, b) heating said water phase mixture to 75 - 80 C, 14

c) preparing an oil phase mixture by mixing 1.0 - 4.0% of a suitable wax with 3.0 - 4.0% of a second emulsifier and 4.0 - 6.0% of an emollient, 5 d) heating said oil phase mixture to

75 - 80° C e) mixing the heated water phase mixture with the heated oil phase mixture for 15 minutes to form an emulsion, and 10 f) cooling said emulsion.