US20060145120A1 - Cooling liquid composition for fuel cell - Google Patents
Cooling liquid composition for fuel cell Download PDFInfo
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- US20060145120A1 US20060145120A1 US11/330,015 US33001506A US2006145120A1 US 20060145120 A1 US20060145120 A1 US 20060145120A1 US 33001506 A US33001506 A US 33001506A US 2006145120 A1 US2006145120 A1 US 2006145120A1
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- methyl
- coolant
- butene
- hexyne
- octene
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04007—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids related to heat exchange
- H01M8/04029—Heat exchange using liquids
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K5/00—Heat-transfer, heat-exchange or heat-storage materials, e.g. refrigerants; Materials for the production of heat or cold by chemical reactions other than by combustion
- C09K5/08—Materials not undergoing a change of physical state when used
- C09K5/10—Liquid materials
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
Definitions
- the present invention relates to a coolant composition for fuel cells, and specifically to such a coolant composition for automobiles.
- the present invention relates to a coolant composition that provides an excellent antifreeze property and is capable of maintaining the electrical conductivity of the coolant adequately low for a long period of time.
- a fuel cell unit which generates electrical power is provided as a stack of a plurality of fuel cells. During power generation, heat is generated from the fuel cells. To cool the fuel cell unit, a cooling plate is inserted between every few fuel cells.
- a fluid path for coolant is provided in each cooling plate in order to cool the fuel cell unit.
- a coolant for a fuel cell unit circulates within the stack of the fuel cells and cools the fuel cells. If the electrical conductivity of the coolant is “high”, the electricity generated in the fuel cells partially flows into the coolant, resulting in loss of electrical power generated in the fuel cell unit.
- the temperature of the coolant is subject to the atmospheric temperature when not in use.
- the atmospheric temperature falls below the freezing point, pure water coolant would freeze, potentially leading to physically damaging the cooling plates.
- the battery performance of the fuel cell system would then deteriorate.
- Such a glycol may be oxidized during use, and may produce ionic substances. Such ionic substances raise electrical conductivity of the coolant.
- the coolant paths of a fuel cell system are generally provided with an ion exchanger or ion exchange resin to remove such ionic substances.
- the capacity of the ion exchanger deteriorates as time goes by because the ion exchanger is “consumed” for removal of the ionic substances.
- an object of the present invention to provide an anti-freeze coolant composition for a fuel cell unit, which is capable of maintaining the electrical conductivity of a coolant low for a long period of time by suppressing generation of ionic substances in the coolant.
- the coolant composition of the present invention is characterized by containing at least one aliphatic alcohol having unsaturated bonds in the molecules thereof.
- the base component of this coolant composition possesses low electrical conductivity and antifreeze properties.
- the base component contains at least one ingredient selected from the group consisting of water, glycols, saturated alcohols and glycol ethers.
- the glycols may be ethylene glycol, diethylene glycol, triethylene glycol, propylene glycol, 1,3-propanediol, 1,3-butanediol, 1,5-pentanediol and hexylene glycol.
- the saturated alcohols may be methanol, ethanol, propanol, butanol, pentanol, hexanol, heptanol and octanol.
- the glycol ethers may be alkyl ether of polyoxy alkylene glycol, such as ethylene glycol monomethyl ether, diethylene glycol monomethyl ether, triethylene glycol monomethyl ether, tetraethylene glycol monomethyl ether, ethylene glycol monoethyl ether, diethylene glycol monoethyl ether, triethylene glycol monoethyl ether, tetraethylene glycol monoethyl ether, ethylene glycol monobutyl ether, diethylene glycol monobutyl ether, triethylene glycol monobutyl ether and tetraethylene glycol monobutyl ether.
- polyoxy alkylene glycol such as ethylene glycol monomethyl ether, diethylene glycol monomethyl ether, triethylene glycol monomethyl ether, tetraethylene glycol monomethyl ether, ethylene glycol monoethyl ether, diethylene glycol monoethyl ether, triethylene glycol monoethyl ether, tetraethylene glycol
- the aliphatic alcohols possess unsaturated bonds in the molecules, and maintain electrical conductivity low.
- the electrical conductivity of the coolant according to the present invention is maintained at 10 ⁇ S/cm or below, and the fluctuation in electrical conductivity of the coolant during a long use is maintained within the range from 0 ⁇ S/cm to 10 ⁇ S/cm.
- the aliphatic alcohols of the present invention are not easily removed by the ion exchanger used in the cooling system and are capable of keeping the electrical conductivity of the coolant low for a long time. As they are not removed by the ion exchanger, the expected function of the aliphatic alcohols according to the present invention will last long without losing ion exchanging capability.
- the aliphatic alcohols have 2 to 20 carbon atoms per molecule.
- the aliphatic alcohols may be selected from allyl alcohol, 2-butene-1-ol, 3-butene-1-ol, 1-butene-3-ol, 2-methyl-2-propene-1-ol, 4-pentene-1-ol, 1-pentene-3-ol, 2-pentene-1-ol, 2-methyl-3-butene-2-ol, 3-methyl-2-butene-1-ol, 3-methyl-3-butene-1-ol, 2-hexene-1-ol, 3-hexene-1-ol, 4-hexene-1-ol, 5-hexene-1-ol, 1-hexene-3-ol, 6-heptene-1-ol, 2-heptene-1-ol, 4-heptene-1-ol, 7-octene-1-ol, 2-octene-1-ol, 3-octene-1-ol, 5-oct
- the aliphatic alcohols are contained within the range from 0.01 part by weight to 15 parts by weight against 100 parts by weight of the base component. Outside of this range, satisfactory results will not be attained or waste will result.
- the coolant composition of the present invention may additionally contain an antifoaming agent, coloring agent, etc.
- a conventionally known rust inhibitor such as molybdate, tungstate, sulfate, nitrate and/or benzoate may also be added in an amount that does not increase the electrical conductivity of the coolant of the present invention.
- Embodiment 1 consisted of ethylene glycol, 3-butene-1-ol (aliphatic unsaturated alcohol), and deionized water.
- Embodiment 2 consisted of ethylene glycol, 4-pentene-1-ol (aliphatic unsaturated alcohol), and deionized water.
- Embodiment 3 consisted of ethylene glycol, 2,5-dimethyl-3-hexyne-2,5-diol (aliphatic unsaturated alcohol), and deionized water.
- Comparison 1 consisted of ethylene glycol and deionized water.
- Comparison 2 consisted of ethylene glycol, 1-butanol (aliphatic saturated alcohol), and ion exchanged water.
- Comparison 3 consisted of ethylene glycol, 1-pentanol (aliphatic saturated alcohol), and dedionized water.
- Embodiments 1 to 3 and Comparisons 1 to 3 each had an initial electrical conductivity 0.3 ⁇ S/cm or below, while each of the electrical conductivities of Comparisons 1 to 3 after oxidation was much higher (42.6 for Comparison 1, 43.9 for Comparison 2, and 39.6 for Comparison 3). In contrast, the electrical conductivities of Embodiments 1 to 3 after oxidation all remained within the range from 0 ⁇ S/cm to 9.5 ⁇ S/cm (9.5 for Embodiment 1, 4.4 for Embodiment 2, and 2.9 for Embodiment 3).
- the aliphatic alcohol having unsaturated bonds in the molecules contained in the coolant composition of the present invention prevents generation of ionic substances as a result of oxidation of the base component of the coolant otherwise and is capable of maintaining the electrical conductivity of the coolant low for a long period of time.
- the aliphatic alcohol in the coolant composition of the present invention is not easily removed by an ion exchanger in cooling systems, the duration of effectiveness of the ion exchanger is extended.
Abstract
A coolant composition for a fuel cell unit, which contains at least one aliphatic alcohol having unsaturated bonds in the molecules having 2 to 20 carbon atoms each. The coolant composition maintains the electrical conductivity of the coolant at 10 μS/cm or below as well as the fluctuation of the electrical conductivity within the range of 0 to 10 μS/cm.
Description
- This application is a continuation of PCT Application No. PCT/JP2003/016646 filed Dec. 24, 2003 which claims priority to PCT Application No. PCT/JP2003/008879 filed Jul. 11, 2003, each of which are hereby incorporated by references herein.
- The present invention relates to a coolant composition for fuel cells, and specifically to such a coolant composition for automobiles. In particular, the present invention relates to a coolant composition that provides an excellent antifreeze property and is capable of maintaining the electrical conductivity of the coolant adequately low for a long period of time.
- Generally a fuel cell unit which generates electrical power is provided as a stack of a plurality of fuel cells. During power generation, heat is generated from the fuel cells. To cool the fuel cell unit, a cooling plate is inserted between every few fuel cells.
- A fluid path for coolant is provided in each cooling plate in order to cool the fuel cell unit.
- A coolant for a fuel cell unit circulates within the stack of the fuel cells and cools the fuel cells. If the electrical conductivity of the coolant is “high”, the electricity generated in the fuel cells partially flows into the coolant, resulting in loss of electrical power generated in the fuel cell unit.
- Conventionally, pure water which is very low in electrical conductivity and thus high in electrical insulation has been used as coolant for fuel cell units.
- In the case of a fuel cell system which is used intermittently, such as a fuel cell system for an automobile, the temperature of the coolant is subject to the atmospheric temperature when not in use. When the atmospheric temperature falls below the freezing point, pure water coolant would freeze, potentially leading to physically damaging the cooling plates. The battery performance of the fuel cell system would then deteriorate.
- Accordingly, low electrical conductivity and good antifreeze property are required of coolant for fuel cell systems, especially for fuel cell systems of automobiles.
- A coolant composition containing a base component of a water-glycol blend and an amine based alkaline additive that works to maintain the electrical conductivity of the coolant low has been proposed (see Japanese Unexamined Patent Publication 2001-164244).
- Such a glycol may be oxidized during use, and may produce ionic substances. Such ionic substances raise electrical conductivity of the coolant.
- The coolant paths of a fuel cell system are generally provided with an ion exchanger or ion exchange resin to remove such ionic substances.
- However, the capacity of the ion exchanger deteriorates as time goes by because the ion exchanger is “consumed” for removal of the ionic substances.
- Accordingly, it is an object of the present invention to provide an anti-freeze coolant composition for a fuel cell unit, which is capable of maintaining the electrical conductivity of a coolant low for a long period of time by suppressing generation of ionic substances in the coolant.
- In the following, a coolant composition for fuel cells according to the present invention is described in detail. The coolant composition of the present invention is characterized by containing at least one aliphatic alcohol having unsaturated bonds in the molecules thereof. The base component of this coolant composition possesses low electrical conductivity and antifreeze properties. Preferably, the base component contains at least one ingredient selected from the group consisting of water, glycols, saturated alcohols and glycol ethers.
- The glycols may be ethylene glycol, diethylene glycol, triethylene glycol, propylene glycol, 1,3-propanediol, 1,3-butanediol, 1,5-pentanediol and hexylene glycol.
- The saturated alcohols may be methanol, ethanol, propanol, butanol, pentanol, hexanol, heptanol and octanol.
- The glycol ethers may be alkyl ether of polyoxy alkylene glycol, such as ethylene glycol monomethyl ether, diethylene glycol monomethyl ether, triethylene glycol monomethyl ether, tetraethylene glycol monomethyl ether, ethylene glycol monoethyl ether, diethylene glycol monoethyl ether, triethylene glycol monoethyl ether, tetraethylene glycol monoethyl ether, ethylene glycol monobutyl ether, diethylene glycol monobutyl ether, triethylene glycol monobutyl ether and tetraethylene glycol monobutyl ether.
- The aliphatic alcohols possess unsaturated bonds in the molecules, and maintain electrical conductivity low. The electrical conductivity of the coolant according to the present invention is maintained at 10 μS/cm or below, and the fluctuation in electrical conductivity of the coolant during a long use is maintained within the range from 0 μS/cm to 10 μS/cm.
- The aliphatic alcohols of the present invention are not easily removed by the ion exchanger used in the cooling system and are capable of keeping the electrical conductivity of the coolant low for a long time. As they are not removed by the ion exchanger, the expected function of the aliphatic alcohols according to the present invention will last long without losing ion exchanging capability.
- Preferably, the aliphatic alcohols have 2 to 20 carbon atoms per molecule. The aliphatic alcohols may be selected from allyl alcohol, 2-butene-1-ol, 3-butene-1-ol, 1-butene-3-ol, 2-methyl-2-propene-1-ol, 4-pentene-1-ol, 1-pentene-3-ol, 2-pentene-1-ol, 2-methyl-3-butene-2-ol, 3-methyl-2-butene-1-ol, 3-methyl-3-butene-1-ol, 2-hexene-1-ol, 3-hexene-1-ol, 4-hexene-1-ol, 5-hexene-1-ol, 1-hexene-3-ol, 6-heptene-1-ol, 2-heptene-1-ol, 4-heptene-1-ol, 7-octene-1-ol, 2-octene-1-ol, 3-octene-1-ol, 5-octene-1-ol, 3-octene-2-ol, 1-octene-3-ol, 2-nonene-1-ol, 3-nonene-1-ol, 6-nonene-1-ol, 8-nonene-1-ol, 1-nonene-3-ol, 2-decene-1-ol, 4-decene-1-ol, 9-decene-1-ol, 3,7-dimethyl-6-octene-3-ol, 2-undecene-1-ol, 10-undecence-1-ol, 2-dodecene-1-ol, 2-propyne-1-ol, 2-butyne-1-ol, 1-butyne-3-ol, 3-butyne-1-ol, 1-pentyne-3-ol, 2-pentyne-1-ol, 3-pentyne-1-ol, 4-pentyne-1-ol, 4-pentyne-2-ol, 3-methyl-1-butyne-3-ol, 1-hexyne-3-ol, 3-hexyne-1-ol, 5-hexyne-3-ol, 2-hexyne-1-ol, 5-hexyne-1-ol, 3-methyl-1-pentyne-3-ol, 2-cyclohexene-1-ol, 2,4-hexadiene-1-ol, 1-heptyne-3-ol, 2-heptyne-1-ol, 3-heptyne-1-ol, 4-heptyne-2-ol, 5-heptyne-3-ol, 5-methyl-1-hexyne-3-ol, 3,4-dimethyl-1-pentyne-3-ol, 3-ethyl-1-pentyne-3-ol, 3,5-dimethyl-1-hexyne-3-ol, 3-octyne-1-ol, 1-octyne-3-ol, 2,7-octadienol, 3,6-dimethyl-1-heptyne-3-ol, 3-ethyl-1-heptyne-3-ol, 3-nonyne-1-ol, 2,6-nonadiene-1-ol, 3,6-nonadiene-1-ol, 1-cyclohexyl-2-butene-1-ol, 2-decyne-1-ol, 3-decyne-1-ol, 2,4-decadiene-1-ol, 4-ethyl-1-octyne-3-ol, 3,7-dimethyl-2,6-octadiene-1-ol, 10-undecyne-1-ol, 2,4-undecadiene-1-ol, 2,4-dodecadiene-1-ol, 3-methyl-1-pentene-4-yn-3-ol, 1-ethynyl-1-cyclohexanol, 2-butene-1,4-diol, 2-butyne-1,4-diol, 3-butene-1,2-diol, 2-methylene-1,3-propanediol, 7-octene-1,2-diol, 2,5-dimethyl-3-hexyne-2,5-diol, 3,6-dimethyl-4-octyne-3,6-diol, 3-pentene-2-ol, 4-pentene-2-ol, 2-methyl-3-butene-1-ol, 5-hexene-2-ol, 3-methyl-1-pentene-3-ol, 4-methyl-3-pentene-1-ol, 4-methyl-2-cyclohexene-1-ol, 5-decene-1-ol, 3,7-dimethyl-6-octene-3-ol, 1,4-pentadiene-3-ol, 1,5-hexadiene-3-ol, 1,6-heptadiene-4-ol, 2-methyl-3-hexyne-2-ol, 1-ethynyl-1-cyclopentanol, 10-undecyne-1-ol, 1,5-hexadiene-3,4-diol, and 3,5-cyclohexadiene-1,2-diol.
- Desirably, the aliphatic alcohols are contained within the range from 0.01 part by weight to 15 parts by weight against 100 parts by weight of the base component. Outside of this range, satisfactory results will not be attained or waste will result.
- The coolant composition of the present invention may additionally contain an antifoaming agent, coloring agent, etc. A conventionally known rust inhibitor, such as molybdate, tungstate, sulfate, nitrate and/or benzoate may also be added in an amount that does not increase the electrical conductivity of the coolant of the present invention.
- The coolant composition of the present invention is described hereunder using embodiments of the present invention. Table 1 shows the respective components of Embodiments 1 to 3 of the present invention and Comparisons 1 to 3. Embodiment 1 consisted of ethylene glycol, 3-butene-1-ol (aliphatic unsaturated alcohol), and deionized water. Embodiment 2 consisted of ethylene glycol, 4-pentene-1-ol (aliphatic unsaturated alcohol), and deionized water. Embodiment 3 consisted of ethylene glycol, 2,5-dimethyl-3-hexyne-2,5-diol (aliphatic unsaturated alcohol), and deionized water. Comparison 1 consisted of ethylene glycol and deionized water. Comparison 2 consisted of ethylene glycol, 1-butanol (aliphatic saturated alcohol), and ion exchanged water. Comparison 3 consisted of ethylene glycol, 1-pentanol (aliphatic saturated alcohol), and dedionized water.
TABLE 1 (parts by weight) Com- Com- Com- Embod- Embod- Embod- par- par- par- Item iment 1 iment 2 iment 3 ison 1 ison 2 ison 3 ethylene glycol 50 50 50 50 50 50 water 50 50 50 50 50 50 3-butene-1-ol 0.5 — — — — — 4-pentene-1-ol — 0.5 — — — — 1-butanol — — — — 0.5 — 1-pentanol — — — — — 0.5 2,5- — — 0.5 — — — dimethyl-3- hexyne- 2,5-diol - The electrical conductivity after oxidation treatment of each embodiment and comparison was measured. The results are shown in Table 2. The oxidation treatment of each sample was performed over 168 hours at 100° C.
TABLE 2 Com- Com- Com- Embod- Embod- Embod- par- par- par- Item iment 1 iment 2 iment 3 ison 1 ison 2 ison 3 Initial 0.2 0.2 0.2 0.2 0.2 0.3 conductivity (μS/cm) Post oxidation 9.5 4.4 2.9 42.6 43.9 39.6 conductivity (μS/cm) - As Table 2 shows, Embodiments 1 to 3 and Comparisons 1 to 3 each had an initial electrical conductivity 0.3 μS/cm or below, while each of the electrical conductivities of Comparisons 1 to 3 after oxidation was much higher (42.6 for Comparison 1, 43.9 for Comparison 2, and 39.6 for Comparison 3). In contrast, the electrical conductivities of Embodiments 1 to 3 after oxidation all remained within the range from 0 μS/cm to 9.5 μS/cm (9.5 for Embodiment 1, 4.4 for Embodiment 2, and 2.9 for Embodiment 3).
- The aliphatic alcohol having unsaturated bonds in the molecules contained in the coolant composition of the present invention prevents generation of ionic substances as a result of oxidation of the base component of the coolant otherwise and is capable of maintaining the electrical conductivity of the coolant low for a long period of time. In addition, as the aliphatic alcohol in the coolant composition of the present invention is not easily removed by an ion exchanger in cooling systems, the duration of effectiveness of the ion exchanger is extended.
Claims (20)
1. A coolant composition for a fuel cell unit, comprising
a fuel cell unit coolant comprising at least one aliphatic alcohol that comprises an unsaturated bond.
2. The coolant composition according to claim 1 , wherein a number of carbon atoms per molecule of said at least one aliphatic alcohol is 2 to 20.
3. The coolant composition according to claim 2 , wherein said at least one aliphatic alcohol is selected from the group consisting of allyl alcohol,2-butene-1-ol, 3-butene-1-ol, 1-butene-3-ol, 2-methyl-2-propene-1-ol, 4-pentene-1-ol, 1-pentene-3-ol, 2-pentene-1-ol, 2-methyl-3-butene-2-ol, 3-methyl-2-butene-1-ol, 3-methyl-3-butene-1-ol, 2-hexene-1-ol, 3-hexene-1-ol, 4-hexene-1-ol, 5-hexene-1-ol, 1-hexene-3-ol, 6-heptene-1-ol, 2-heptene-1-ol, 4-heptene-1-ol, 7-octene-1-ol, 2-octene-1-ol, 3-octene-1-ol, 5-octene-1-ol, 3-octene-2-ol, 1-octene-3-ol, 2-nonene-1-ol, 3-nonene-1-ol, 6-nonene-1-ol, 8-nonene-1-ol, 1-nonene-3-ol, 2-decene-1-ol, 4-decene-1-ol, 9-decene-1-ol, 3,7-dimethyl-6-octene-3-ol, 2-undecene-1-ol, 10-undecence-1-ol, 2-dodecene-1-ol, 2-propyne-1-ol, 2-butyne-1-ol, 1-butyne-3-ol, 3-butyne-1-ol, 1-pentyne-3-ol, 2-pentyne-1-ol, 3-pentyne-1-ol, 4-pentyne-1-ol, 4-pentyne-2-ol, 3-methyl-1-butyne-3-ol, 1-hexyne-3-ol, 3-hexyne-1-ol, 5-hexyne-3-ol, 2-hexyne-1-ol, 5-hexyne-1-ol, 3-methyl-1-pentyne-3-ol, 2-cyclohexene-1-ol, 2,4-hexadiene-1-ol, 1-heptyne-3-ol, 2-heptyne-1-ol, 3-heptyne-1-ol, 4-heptyne-2-ol, 5-heptyne-3-ol, 5-methyl-1-hexyne-3-ol, 3,4-dimethyl-1-pentyne-3-ol, 3-ethyl-1-pentyne-3-ol, 3,5-dimethyl-1-hexyne-3-ol, 3-octyne-1-ol, 1-octyne-3-ol, 2,7-octadienol, 3,6-dimethyl-1-heptyne-3-ol, 3-ethyl-1-heptyne-3-ol, 3-nonyne-1-ol, 2,6-nonadiene-1-ol, 3,6-nonadiene-1-ol, 1-cyclohexyl-2-butene-1-ol, 2-decyne-1-ol, 3-decyne-1-ol, 2,4-decadiene-1-ol, 4-ethyl-1-octyne-3-ol, 3,7-dimethyl-2,6-octadiene-1-ol, 10-undecyne-1-ol, 2,4-undecadiene-1-ol, 2,4-dodecadiene-1-ol, 3-methyl-1-pentene-4-yn-3-ol, 1-ethynyl-1-cyclohexanol, 2-butene-1,4-diol, 2-butyne-1,4-diol, 3-butene-1,2-diol, 2-methylene-1,3-propanediol, 7-octene-1,2-diol, 2,5-dimethyl-3-hexyne-2,5-diol, 3,6-dimethyl-4-octyne-3,6-diol, 3-pentene-2-ol, 4-pentene-2-ol, 2-methyl-3-butene-1-ol, 5-hexene-2-ol, 3-methyl-1-pentene-3-ol, 4-methyl-3-pentene-1-ol, 4-methyl-2-cyclohexene-1-ol, 5-decene-1-ol, 3,7-dimethyl-6-octene-3-ol, 1,4-pentadiene-3-ol, 1,5-hexadiene-3-ol, 1,6-heptadiene-4-ol, 2-methyl-3-hexyne-2-ol, 1-ethynyl-1-cyclopentanol, 10-undecyne-1-ol, 1,5-hexadiene-3,4-diol, 3,5-cyclohexadiene-1,2-diol, and combinations thereof.
4. The coolant composition according to claim 1 , wherein the coolant further comprises a base component selected from the group consisting of water, glycols, saturated alcohols, glycol ethers, and combinations thereof.
5. The coolant composition according to claim 1 , wherein the coolant comprises from 0.01 part by weight to 15 parts by weight of said at least one aliphatic alcohol relative to 100 parts by weight of a base component.
6. The coolant composition according to claim 1 , wherein said at least one aliphatic alcohol maintains electrical conductivity of the coolant at 10 μS/cm or below.
7. The coolant composition of claim 1 , wherein said at least one aliphatic alcohol maintains fluctuations in electrical conductivity of the coolant within the range from 0 μS/cm to 10 μS/cm.
8. A method of cooling a fuel cell unit comprising a cooling system, the method comprising adding the composition of claim 1 to a fuel cell cooling system.
9. A method of making a fuel cell unit coolant composition comprising mixing a base component with at least one aliphatic alcohol comprising an unsaturated bond.
10. The method of claim 9 wherein the base component comprises water, glycol, saturated alcohol, glycol ether, or a combination thereof.
11. The method of claim 9 wherein the coolant composition comprises from 0.01 part by weight to 15 parts by weight of the aliphatic alcohol relative to 100 parts by weight of the base component.
12. The method of claim 9 wherein the aliphatic alcohol maintains the electrical conductivity of the coolant composition at 10 μS/cm or below.
13. The method of claim 9 wherein the aliphatic alcohol maintains fluctuations in electrical conductivity of the coolant composition within the range from 0 μS/cm to 10 μS/cm.
14. A fuel cell unit comprising
a fuel cell coolant system configured to circulate coolant within a fuel cell stack to cool fuel cells in the stack, with the coolant comprising at least one aliphatic alcohol that comprises an unsaturated bond.
15. The fuel cell unit of claim 14 wherein a number of carbon atoms per molecule of said at least one aliphatic alcohol is 2 to 20.
16. The fuel cell unit of claim 14 wherein said at least one aliphatic alcohol is selected from the group consisting of allyl alcohol,2-butene-1-ol, 3-butene-1-ol, 1-butene-3-ol, 2-methyl-2-propene-1-ol, 4-pentene-1-ol, 1-pentene-3-ol, 2-pentene-1-ol, 2-methyl-3-butene-2-ol, 3-methyl-2-butene-1-ol, 3-methyl-3-butene-1-ol, 2-hexene-1-ol, 3-hexene-1-ol, 4-hexene-1-ol, 5-hexene-1-ol, 1-hexene-3-ol, 6-heptene-1-ol, 2-heptene-1-ol, 4-heptene-1-ol, 7-octene-1-ol, 2-octene-1-ol, 3-octene-1-ol, 5-octene-1-ol, 3-octene-2-ol, 1-octene-3-ol, 2-nonene-1-ol, 3-nonene-1-ol, 6-nonene-1-ol, 8-nonene-1-ol, 1-nonene-3-ol, 2-decene-1-ol, 4-decene-1-ol, 9-decene-1-ol, 3,7-dimethyl-6-octene-3-ol, 2-undecene-1-ol, 10-undecence-1-ol, 2-dodecene-1-ol, 2-propyne-1-ol, 2-butyne-1-ol, 1-butyne-3-ol, 3-butyne-1-ol, 1-pentyne-3-ol, 2-pentyne-1-ol, 3-pentyne-1-ol, 4-pentyne-1-ol, 4-pentyne-2-ol, 3-methyl-1-butyne-3-ol, 1-hexyne-3-ol, 3-hexyne-1-ol, 5-hexyne-3-ol, 2-hexyne-1-ol, 5-hexyne-1-ol, 3-methyl-1-pentyne-3-ol, 2-cyclohexene-1-ol, 2,4-hexadiene-1-ol, 1-heptyne-3-ol, 2-heptyne-1-ol, 3-heptyne-1-ol, 4-heptyne-2-ol, 5-heptyne-3-ol, 5-methyl-1-hexyne-3-ol, 3,4-dimethyl-1-pentyne-3-ol, 3-ethyl-1-pentyne-3-ol, 3,5-dimethyl-1-hexyne-3-ol, 3-octyne-1-ol, 1-octyne-3-ol, 2,7-octadienol, 3,6-dimethyl-1-heptyne-3-ol, 3-ethyl-1-heptyne-3-ol, 3-nonyne-1-ol, 2,6-nonadiene-1-ol, 3,6-nonadiene-1-ol, 1-cyclohexyl-2-butene-1-ol, 2-decyne-1-ol, 3-decyne-1-ol, 2,4-decadiene-1-ol, 4-ethyl-1-octyne-3-ol, 3,7-dimethyl-2,6-octadiene-1-ol, 10-undecyne-1-ol, 2,4-undecadiene-1-ol, 2,4-dodecadiene-1-ol, 3-methyl-1-pentene-4-yn-3-ol, 1-ethynyl-1-cyclohexanol, 2-butene-1,4-diol, 2-butyne-1,4-diol, 3-butene-1,2-diol, 2-methylene-1,3-propanediol, 7-octene-1,2-diol, 2,5-dimethyl-3-hexyne-2,5-diol, 3,6-dimethyl-4-octyne-3,6-diol, 3-pentene-2-ol, 4-pentene-2-ol, 2-methyl-3-butene-1-ol, 5-hexene-2-ol, 3-methyl-1-pentene-3-ol, 4-methyl-3-pentene-1-ol, 4-methyl-2-cyclohexene-1-ol, 5-decene-1-ol, 3,7-dimethyl-6-octene-3-ol, 1,4-pentadiene-3-ol, 1,5-hexadiene-3-ol, 1,6-heptadiene-4-ol, 2-methyl-3-hexyne-2-ol, 1-ethynyl-1-cyclopentanol, 10-undecyne-1-ol, 1,5-hexadiene-3,4-diol, 3,5-cyclohexadiene-1,2-diol, and combinations thereof.
17. The fuel cell unit of claim 14 wherein the coolant further comprises a base component selected from the group consisting of water, glycols, saturated alcohols, glycol ethers, and combinations thereof.
18. The fuel cell unit of claim 14 wherein the coolant comprises from 0.01 part by weight to 15 parts by weight of said at least one aliphatic alcohol relative to 100 parts by weight of a base component.
19. The fuel cell unit of claim 14 wherein post oxidation electrical conductivity of the coolant is about 10 μS/cm or below.
20. The fuel cell unit of claim 14 wherein electrical conductivity fluctuations between initial conductivity of the coolant and post oxidation conductivity of the coolant range from 0 μS/cm to 10 μS/cm.
Priority Applications (1)
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US12/046,244 US8187763B2 (en) | 2003-07-11 | 2008-03-11 | Cooling liquid composition for fuel cell |
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PCT/JP2003/008879 WO2005006476A1 (en) | 2003-07-11 | 2003-07-11 | Cooling fluid composition for fuel battery |
WOPCT/JP03/08879 | 2003-07-11 | ||
PCT/JP2003/016646 WO2005006475A1 (en) | 2003-07-11 | 2003-12-24 | Cooling liquid composition for fuel cell |
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US11/330,015 Abandoned US20060145120A1 (en) | 2003-07-11 | 2006-01-11 | Cooling liquid composition for fuel cell |
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US (2) | US20060145120A1 (en) |
EP (1) | EP1653544A4 (en) |
CN (1) | CN100382371C (en) |
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Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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US20080251756A1 (en) * | 2005-03-02 | 2008-10-16 | Shishiai-Kabushikigaisha | Coolant composition for fuel cell |
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US8187763B2 (en) | 2003-07-11 | 2012-05-29 | Honda Motor Co., Ltd. | Cooling liquid composition for fuel cell |
CN113652210A (en) * | 2021-06-28 | 2021-11-16 | 中国船舶重工集团公司第七一八研究所 | Low-conductivity long-acting cooling liquid and preparation method thereof |
WO2023111687A1 (en) * | 2021-12-17 | 2023-06-22 | Cci Holdings, Inc. | Heat transfer system with organic, non-ionic inhibitors compatible with flux exposure in fuel cell operations |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5027656B2 (en) * | 2005-03-30 | 2012-09-19 | シーシーアイ株式会社 | Coolant composition for fuel cell |
CA2577766A1 (en) * | 2006-02-17 | 2007-08-17 | Nuvera Fuel Cells, Inc. | Method of cleaning fuel cell |
TWI819397B (en) * | 2020-10-26 | 2023-10-21 | 日商信越聚合物股份有限公司 | Conductive polymer dispersion and its manufacturing method, conductive polymer-containing liquid and its manufacturing method, conductive laminate and its manufacturing method, and capacitor and its manufacturing method |
Citations (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2595547A (en) * | 1946-07-11 | 1952-05-06 | Schaaf Herman | Electromagnet |
US4105405A (en) * | 1976-11-27 | 1978-08-08 | Henkel Kommanditgesellschaft Auf Aktien | Method and composition for inhibiting corrosion of metals in contact with water |
US4418231A (en) * | 1981-08-07 | 1983-11-29 | Ppg Industries, Inc. | Corrosion inhibited solvent compositions |
US5454967A (en) * | 1992-02-18 | 1995-10-03 | Basf Aktiengesellschaft | Phosphate containing coolant mixtures which are stable in hard water |
US5723061A (en) * | 1995-04-28 | 1998-03-03 | Bp Chemicals Limited | Antifreeze composition comprising a water-soluble alcohol and a corrosion inhibitor system comprising dicarboxylic acids or salts thereof, diazole and a triazole |
US5772912A (en) * | 1995-01-25 | 1998-06-30 | The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration | Environmentally friendly anti-icing |
US6040073A (en) * | 1996-08-07 | 2000-03-21 | Honda Giken Kogyo Kabushiki Kaisha | Fuel cell |
US6042955A (en) * | 1995-05-25 | 2000-03-28 | Honda Giken Kogyo Kabushiki Kaisha | Fuel cell and method of controlling same |
US6309559B1 (en) * | 1999-07-02 | 2001-10-30 | Clariant Gmbh | Silicate-, borate-and phosphate-free cooling fluids based on glycols and having improved corrosion behavior |
US6361891B1 (en) * | 1999-12-20 | 2002-03-26 | Utc Fuel Cells, Llc | Direct antifreeze cooled fuel cell power plant system |
US6391257B1 (en) * | 1998-08-19 | 2002-05-21 | Prestone Products Corporation | Antifreeze compositions comprising carboxylic acid and cyclohexenoic acid |
US20020068360A1 (en) * | 2000-04-17 | 2002-06-06 | Brockbank Kelvin G.M. | Cyclohexanediol cryoprotectant compounds |
US20050244692A1 (en) * | 2002-11-05 | 2005-11-03 | Hiroshi Egawa | Fuel cell coolant composition |
Family Cites Families (94)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2071482A (en) | 1934-01-31 | 1937-02-23 | Standard Oil Dev Co | Antifreeze |
US2307577A (en) | 1941-02-18 | 1943-01-05 | Du Pont | Noncorrosive liquid |
US2959547A (en) | 1957-01-31 | 1960-11-08 | Ray S Pyle | Aqueous coolant for metal working machines |
DE1217137B (en) | 1964-02-22 | 1966-05-18 | Bp Benzin | Antifreeze for coolants |
GB1235101A (en) | 1967-05-01 | 1971-06-09 | Albright & Wilson Mfg Ltd | Improvements relating to electrodeposition of copper |
US4105581A (en) | 1977-02-18 | 1978-08-08 | Drew Chemical Corporation | Corrosion inhibitor |
DE2942864C2 (en) | 1979-10-24 | 1986-11-20 | Hüls AG, 4370 Marl | Cavitation-inhibiting, frost-proof heat transfer fluid |
US4351796A (en) | 1980-02-25 | 1982-09-28 | Ciba-Geigy Corporation | Method for scale control |
DE3035327A1 (en) | 1980-09-19 | 1982-05-06 | Hoechst Ag, 6000 Frankfurt | COOLING LIQUID WITH CORROSION AND CAVITATION-RESISTANT ADDITIVES |
DE3311636A1 (en) | 1983-03-30 | 1984-10-04 | Bayer Ag, 5090 Leverkusen | NEW FIVE-PIECE NITROGEN-CONTAINING HETEROCYCLES, METHOD FOR THE PRODUCTION THEREOF AND THEIR USE AS A PEST CONTROL |
US4600524A (en) | 1983-12-08 | 1986-07-15 | W. R. Grace & Co. | Composition and method for inhibiting scale |
WO1986000917A1 (en) | 1984-07-18 | 1986-02-13 | Komáromi Ko^"Olajipari Vállalat | Heat transfer liquid |
IN166983B (en) | 1985-02-11 | 1990-08-18 | Henkel Corp | |
US4806310A (en) | 1985-06-14 | 1989-02-21 | Drew Chemical Corporation | Corrosion inhibitor |
EP0229254A3 (en) | 1985-11-14 | 1987-08-26 | Asahi Glass Company Ltd. | Electrolyte for an electrolytic capacitor |
US4647392A (en) | 1985-12-27 | 1987-03-03 | Texaco Inc. | Monobasic-dibasic acid/salt antifreeze corrosion inhibitor |
JPS62205183A (en) | 1986-02-28 | 1987-09-09 | テキサコ・デベロツプメント・コ−ポレ−シヨン | Stabilized thick composition for anti-freeze liquid based onphosphoric acid and aqueous cooling liquid composition containing the same |
US4851145A (en) | 1986-06-30 | 1989-07-25 | S.A. Texaco Petroleum Nv | Corrosion-inhibited antifreeze/coolant composition |
US5080818A (en) | 1987-06-16 | 1992-01-14 | Nippon Shokubai Kagaku Kogyo Co., Ltd. | Antifreeze composition |
JPH01119011A (en) | 1987-10-30 | 1989-05-11 | Nichicon Corp | Electrolytic solution for driving electrolytic capacitor |
SU1563936A1 (en) | 1988-05-25 | 1990-05-15 | Научно-производственное объединение "Медоборудование" | Flux for brazing copper and alloys thereof |
JPH0231894A (en) | 1988-07-22 | 1990-02-01 | Mitsubishi Gas Chem Co Inc | Agent for preventing scaling in cooling water system |
JPH0674415B2 (en) | 1989-05-01 | 1994-09-21 | シーシーアイ株式会社 | Coolant composition |
GB8922504D0 (en) | 1989-10-05 | 1989-11-22 | Interox Chemicals Ltd | Hydrogen peroxide solutions |
US5042986A (en) | 1989-10-13 | 1991-08-27 | The Dow Chemical Company | Wrinkle resistant cellulosic textiles |
JP2772578B2 (en) | 1990-06-29 | 1998-07-02 | シーシーアイ株式会社 | antifreeze |
US5100571A (en) | 1990-11-13 | 1992-03-31 | Royal Harvest, Inc. | Additive for engine cooling system |
US5269956A (en) | 1991-09-25 | 1993-12-14 | Texaco Chemical Co. | Compatible corrosion inhibitor combinations |
JPH06116764A (en) | 1992-10-07 | 1994-04-26 | Echiren Chem Kk | Antifreeze composition |
CA2134908A1 (en) | 1993-11-04 | 1995-05-05 | Kaveh Sotoudeh | Closed cooling system corrosion inhibitors |
JP3318594B2 (en) | 1993-12-21 | 2002-08-26 | シーシーアイ株式会社 | Coolant composition |
US5417819A (en) | 1994-01-21 | 1995-05-23 | Aluminum Company Of America | Method for desmutting aluminum alloys having a highly reflective surface |
AU5878294A (en) | 1994-02-07 | 1995-08-21 | Kiss Laboratories S.R.O. | Anti-tumour medical preparation on the basis of carboplatin and the method of its production |
JPH0885782A (en) | 1994-09-16 | 1996-04-02 | Nippon Chem Kogyo Kk | Antifreeze composition |
US5501811A (en) * | 1995-04-24 | 1996-03-26 | Dow Corning Corporation | Azeotropes of octamethyltrisiloxane and aliphatic or alicyclic alcohols |
JP3240889B2 (en) * | 1995-08-17 | 2001-12-25 | 日立エーアイシー株式会社 | Electrolyte for electrolytic capacitors |
JP3790860B2 (en) | 1996-03-28 | 2006-06-28 | シーシーアイ株式会社 | Coolant composition |
DE19625692A1 (en) | 1996-06-27 | 1998-01-02 | Basf Ag | Antifreeze concentrates free of silicate, borate and nitrate and these comprehensive coolant compositions |
US5766506A (en) | 1996-09-12 | 1998-06-16 | The Dow Chemical Company | Hard water compatible phosphate-containing heat transfer fluids |
US6284721B1 (en) | 1997-01-21 | 2001-09-04 | Ki Won Lee | Cleaning and etching compositions |
JP3845702B2 (en) | 1997-03-11 | 2006-11-15 | シーシーアイ株式会社 | Antifreeze / coolant composition |
US6280651B1 (en) | 1998-12-16 | 2001-08-28 | Advanced Technology Materials, Inc. | Selective silicon oxide etchant formulation including fluoride salt, chelating agent, and glycol solvent |
JP2000008027A (en) | 1998-06-26 | 2000-01-11 | Mitsubishi Chemicals Corp | Brine composition |
US6585933B1 (en) | 1999-05-03 | 2003-07-01 | Betzdearborn, Inc. | Method and composition for inhibiting corrosion in aqueous systems |
EP0995785A1 (en) | 1998-10-14 | 2000-04-26 | Texaco Development Corporation | Corrosion inhibitors and synergistic inhibitor combinations for the protection of light metals in heat-transfer fluids and engine coolants |
JP2000219981A (en) | 1999-01-29 | 2000-08-08 | Nippon Chem Kogyo Kk | Antifreezing solution composition |
JP2000239658A (en) | 1999-02-22 | 2000-09-05 | Ipposha Oil Ind Co Ltd | Liquid coolant composition |
JP4242518B2 (en) | 1999-08-11 | 2009-03-25 | 出光興産株式会社 | Refrigerating machine oil composition for carbon dioxide refrigerant |
JP3941030B2 (en) | 1999-09-02 | 2007-07-04 | シーシーアイ株式会社 | Low phosphorus coolant composition |
JP4842420B2 (en) * | 1999-09-28 | 2011-12-21 | トヨタ自動車株式会社 | Cooling liquid, cooling liquid sealing method and cooling system |
BR0014997B1 (en) | 1999-10-29 | 2011-05-17 | antifreeze concentrate and aqueous refrigerant composition. | |
AU2001238216A1 (en) | 2000-02-14 | 2001-08-27 | The Procter And Gamble Company | Stable, aqueous compositions for treating surfaces, especially fabrics |
JP2001279235A (en) | 2000-03-29 | 2001-10-10 | Cci Corp | Antifreeze/coolant composition |
US20040072055A1 (en) | 2000-04-14 | 2004-04-15 | Getz Matthew George | Graphite article useful as a fuel cell component substrate |
ATE286519T1 (en) | 2000-05-05 | 2005-01-15 | Rhodia Cons Spec Ltd | STONE AND CORROSION INHIBITOR |
JP4345205B2 (en) * | 2000-07-14 | 2009-10-14 | トヨタ自動車株式会社 | Cooling of fuel cell considering insulation |
DE10036031A1 (en) | 2000-07-24 | 2002-02-07 | Basf Ag | Anti-freeze concentrates based on amides and these comprehensive coolant compositions for the protection of magnesium and magnesium alloys |
JP3992428B2 (en) | 2000-08-16 | 2007-10-17 | 三洋電機株式会社 | Fuel cell system and operation method thereof |
JP2002105442A (en) * | 2000-10-02 | 2002-04-10 | Mitsubishi Cable Ind Ltd | Heat storage material composition |
DE10063951A1 (en) | 2000-12-20 | 2002-06-27 | Basf Ag | Water-dilutable concentrate for use in fuel cell cooling system is based on an alkylene glycol or derivative containing an ortho-silicic acid ester as corrosion inhibitor |
US6818146B2 (en) * | 2001-01-16 | 2004-11-16 | Shell Oil Company | Chemical base for engine coolant/antifreeze with improved thermal stability properties |
US6572690B2 (en) | 2001-03-05 | 2003-06-03 | Hewlett-Packard Development Company, L.P. | Use of mixtures of organic acids to adjust properties of ink-jet inks |
JP2002270472A (en) | 2001-03-09 | 2002-09-20 | Japan Carlit Co Ltd:The | Electrolytic capacitor and electrolytic solution therefor |
JP4119622B2 (en) | 2001-04-25 | 2008-07-16 | トヨタ自動車株式会社 | Coolant composition |
DE10122769A1 (en) | 2001-05-10 | 2002-11-14 | Basf Ag | Antifreeze concentrates containing the dye C.I. Reactive Violet 5 |
DE10128530A1 (en) * | 2001-06-13 | 2002-12-19 | Basf Ag | Water-dilutable concentrate giving long-life low electrical conductivity cooling systems for fuel cell systems in e.g. vehicles is based on alkylene glycols and also contains azole derivatives |
JP2002371270A (en) | 2001-06-15 | 2002-12-26 | Tanikawa Yuka Kogyo Kk | Antifreeze |
CA2398423C (en) | 2001-09-04 | 2009-11-10 | Rohm And Haas Company | Corrosion inhibiting compositions |
JP3600202B2 (en) * | 2001-09-26 | 2004-12-15 | 三洋電機株式会社 | Polymer electrolyte fuel cell system |
US6951666B2 (en) | 2001-10-05 | 2005-10-04 | Cabot Corporation | Precursor compositions for the deposition of electrically conductive features |
EP1304367A1 (en) * | 2001-10-17 | 2003-04-23 | Texaco Development Corporation | Corrosion inhibiting compositions and methods for fuel cell coolant systems |
JP4088447B2 (en) | 2002-01-16 | 2008-05-21 | トヨタ自動車株式会社 | Automobile cooling water regeneration method and regeneration additive |
JP2003243338A (en) | 2002-02-18 | 2003-08-29 | Sumitomo Bakelite Co Ltd | Polishing composition |
JP2005517796A (en) | 2002-02-19 | 2005-06-16 | ハネウェル・インターナショナル・インコーポレーテッド | Heat transfer composition with high electrical resistance for fuel cell assemblies |
AU2002255302A1 (en) * | 2002-05-02 | 2003-11-17 | Shishiai-Kabushikigaisha | Cooling liquid composition for fuel cell |
US20050109979A1 (en) | 2002-05-02 | 2005-05-26 | Shishiai-Kabushikigaisha | Coolant composition for fuel cell |
EP1386952A3 (en) | 2002-08-02 | 2006-05-24 | Clariant Produkte (Deutschland) GmbH | Antifreeze agent |
JP2004143191A (en) | 2002-10-21 | 2004-05-20 | Toyota Motor Corp | Cooling liquid composition |
JP2004143473A (en) | 2002-10-21 | 2004-05-20 | Toyota Motor Corp | Cooling liquid composition and additive for cooling liquid composition |
US7138199B2 (en) * | 2002-10-30 | 2006-11-21 | Mohapatra Satish C | Fuel cell and fuel cell coolant compositions |
JP2004281106A (en) | 2003-03-13 | 2004-10-07 | Nissan Motor Co Ltd | Cooling liquid composition for fuel cell stack |
DE10313280A1 (en) | 2003-03-25 | 2004-10-07 | Basf Ag | Antifreeze concentrates and coolant compositions based on polyglycols and amides for the protection of magnesium and its alloys |
WO2005006476A1 (en) | 2003-07-11 | 2005-01-20 | Shishiai-Kabushikigaisha | Cooling fluid composition for fuel battery |
BRPI0413344A (en) | 2003-08-07 | 2006-10-10 | Glendon C Daly | method for performing heat transfer in a heating or cooling system, and method for heat transfer |
BRPI0414015A (en) | 2003-09-02 | 2006-10-24 | Alaska Ocean Products | cooling medium, method for cooling, and method for transferring heat |
WO2005033362A1 (en) | 2003-10-01 | 2005-04-14 | Shishiai-Kabushikigaisha | Liquid coolant composition |
EP1681332B1 (en) | 2003-10-16 | 2018-08-08 | Shishiai-Kabushikigaisha | Cooling fluid composition |
EP1688472A4 (en) | 2003-11-26 | 2010-07-07 | Shishiai Kk | Cooling fluid composition |
US7452617B2 (en) * | 2003-12-16 | 2008-11-18 | General Motors Corporation | Fuel cell dielectric coolant and evaporative cooling process using same |
AU2003296135A1 (en) | 2003-12-25 | 2005-07-21 | Shishiai-Kabushikigaisha | Heat carrier composition |
EP1739775B1 (en) | 2004-03-24 | 2011-11-02 | Shishiai-Kabushikigaisha | Cooling fluid composition for fuel cell |
JP2005325300A (en) | 2004-05-17 | 2005-11-24 | Toyota Motor Corp | Cooling liquid composition |
WO2006046275A1 (en) | 2004-10-25 | 2006-05-04 | Shishiai-Kabushikigaisha | Anti-freeze solution/coolant composition |
US7846349B2 (en) | 2004-12-22 | 2010-12-07 | Applied Materials, Inc. | Solution for the selective removal of metal from aluminum substrates |
-
2003
- 2003-07-11 WO PCT/JP2003/008879 patent/WO2005006476A1/en not_active Application Discontinuation
- 2003-07-11 AU AU2003248060A patent/AU2003248060A1/en not_active Abandoned
- 2003-12-24 AU AU2003296102A patent/AU2003296102A1/en not_active Abandoned
- 2003-12-24 EP EP03786294A patent/EP1653544A4/en not_active Withdrawn
- 2003-12-24 WO PCT/JP2003/016646 patent/WO2005006475A1/en active Application Filing
- 2003-12-24 CN CNB2003801103823A patent/CN100382371C/en not_active Expired - Fee Related
-
2006
- 2006-01-11 US US11/330,015 patent/US20060145120A1/en not_active Abandoned
-
2008
- 2008-03-11 US US12/046,244 patent/US8187763B2/en active Active
Patent Citations (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2595547A (en) * | 1946-07-11 | 1952-05-06 | Schaaf Herman | Electromagnet |
US4105405A (en) * | 1976-11-27 | 1978-08-08 | Henkel Kommanditgesellschaft Auf Aktien | Method and composition for inhibiting corrosion of metals in contact with water |
US4418231A (en) * | 1981-08-07 | 1983-11-29 | Ppg Industries, Inc. | Corrosion inhibited solvent compositions |
US5454967A (en) * | 1992-02-18 | 1995-10-03 | Basf Aktiengesellschaft | Phosphate containing coolant mixtures which are stable in hard water |
US5772912A (en) * | 1995-01-25 | 1998-06-30 | The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration | Environmentally friendly anti-icing |
US5723061A (en) * | 1995-04-28 | 1998-03-03 | Bp Chemicals Limited | Antifreeze composition comprising a water-soluble alcohol and a corrosion inhibitor system comprising dicarboxylic acids or salts thereof, diazole and a triazole |
US6214486B1 (en) * | 1995-05-25 | 2001-04-10 | Honda Giken Kogyo Kabushiki Kaisha | Fuel cell and method of controlling same |
US6042955A (en) * | 1995-05-25 | 2000-03-28 | Honda Giken Kogyo Kabushiki Kaisha | Fuel cell and method of controlling same |
US6040073A (en) * | 1996-08-07 | 2000-03-21 | Honda Giken Kogyo Kabushiki Kaisha | Fuel cell |
US6391257B1 (en) * | 1998-08-19 | 2002-05-21 | Prestone Products Corporation | Antifreeze compositions comprising carboxylic acid and cyclohexenoic acid |
US6309559B1 (en) * | 1999-07-02 | 2001-10-30 | Clariant Gmbh | Silicate-, borate-and phosphate-free cooling fluids based on glycols and having improved corrosion behavior |
US6361891B1 (en) * | 1999-12-20 | 2002-03-26 | Utc Fuel Cells, Llc | Direct antifreeze cooled fuel cell power plant system |
US20020068360A1 (en) * | 2000-04-17 | 2002-06-06 | Brockbank Kelvin G.M. | Cyclohexanediol cryoprotectant compounds |
US20050244692A1 (en) * | 2002-11-05 | 2005-11-03 | Hiroshi Egawa | Fuel cell coolant composition |
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US20080251756A1 (en) * | 2005-03-02 | 2008-10-16 | Shishiai-Kabushikigaisha | Coolant composition for fuel cell |
US7670498B2 (en) * | 2005-03-02 | 2010-03-02 | Honda Motor Co., Ltd. | Coolant composition for fuel cell |
US20070075120A1 (en) * | 2005-06-24 | 2007-04-05 | Bo Yang | Methods for inhibiting corrosion in brazed metal surfaces and coolants and additives for use therein |
US8066902B2 (en) * | 2005-06-24 | 2011-11-29 | Prestone Products Corporation | Methods for inhibiting corrosion in brazed metal surfaces and coolants and additives for use therein |
US20090219693A1 (en) * | 2008-03-03 | 2009-09-03 | Harris Corporation | Cooling system for high voltage systems |
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CN113652210A (en) * | 2021-06-28 | 2021-11-16 | 中国船舶重工集团公司第七一八研究所 | Low-conductivity long-acting cooling liquid and preparation method thereof |
WO2023111687A1 (en) * | 2021-12-17 | 2023-06-22 | Cci Holdings, Inc. | Heat transfer system with organic, non-ionic inhibitors compatible with flux exposure in fuel cell operations |
Also Published As
Publication number | Publication date |
---|---|
EP1653544A1 (en) | 2006-05-03 |
US8187763B2 (en) | 2012-05-29 |
AU2003296102A1 (en) | 2005-01-28 |
CN1802765A (en) | 2006-07-12 |
WO2005006475A1 (en) | 2005-01-20 |
AU2003248060A1 (en) | 2005-01-28 |
US20080166615A1 (en) | 2008-07-10 |
EP1653544A4 (en) | 2010-07-28 |
CN100382371C (en) | 2008-04-16 |
WO2005006476A1 (en) | 2005-01-20 |
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