Abstract: A perfluorovinyloxy polyether carboxylic acid alkali metal salt represented by the general formula is provided: CF2?CF[OCF2CF(CF3)]bO(CF2)aO[CF(CF3)CF2O]cCF(CF3)COOM??[I], wherein M is alkali metal, preferably sodium or potassium, a is an integer of 1 to 6, preferably 2, and b+c is an integer of 0 to 6, preferably 0 or 1. This perfluorovinyloxy polyether carboxylic acid alkali metal salt is produced by subjecting a perfluorovinyloxy polyether carboxylic acid alkyl ester represented by the general formula: CF2?CF[OCF2CF(CF3)]bO(CF2)aO[CF(CF3)CF2O]cCF(CF3)COOR??[II], wherein R is an alkyl group having 1 to 12 carbon atoms, a is an integer of 1 to 6, and b+c is an integer of 0 to 6; to hydrolysis or solvolysis in the presence of an alkali metal hydroxide.

Abstract: An on-board power source device comprises power storage modules. In the power storage modules, a plurality of power storage elements are arranged. The power storage module is stacked one upon another. An outlet of a discharge path is provided for discharging gas generated in the respective power storage elements. A frame member extends along the end portion of the power storage modules for fixing the respective upper and lower power storage modules. A bracket locates at the end portion of the power storage modules so as to cover the outlets, for fixing the upper power storage modules to the frame member. The frame member has a discharge space for discharging the gas to the outside of the vehicle. The bracket is provide with a passage part for communicating the outlet of the upper power storage module with the discharge space of the frame member.

Abstract: Disclosed is a fluorine-containing polymer aqueous dispersion in which a fluorine-containing polymer is dispersed using, as an emulsifier, a polyfluoroalkylphosphonic acid salt represented by the general formula: CnF2n+1(CH2CF2)a(CF2CF2)b(CH2CH2)cP(O)(OM1)(OM2)??[I], wherein M1 is a hydrogen atom, an alkali metal, an ammonium base, or an organic amine base, M2 is an alkali metal, an ammonium base, or an organic amine base, n is an integer of 1 to 6, a is an integer of 1 to 4, b is an integer of 1 to 3, and c is an integer of 1 to 3. This fluorine-containing polymer aqueous dispersion uses a polyfluoroalkylphosphonic acid salt with a low bioaccumulation potential as an emulsifier, and has excellent mechanical stability.

Abstract: Disclosed is a perfluoroelastomer composition comprising 100 parts by weight of a perfluoroelastomer containing a cyano group as a crosslinkable group, 0.2 to 5 parts by weight of a bisamidoxime compound vulcanizing agent represented by the general formula: HON?C(NH2)—(CF2)n—C(NH2)?NOH (n: an integer of 1 to 10), and 0.005 to 0.3 parts by weight of a coloring agent with a melting point of 300° C. or above. This perfluoroelastomer composition provides a colored molded product that does not form blooms under high temperature conditions of 300° C. or above, and that can be effectively used, for example, as a sealing material for semiconductor manufacturing devices.

Abstract: A peroxide-crosslinkable fluorine-containing elastomer IS produced by subjecting a fluorine-containing olefin and a perfluoroalkyl divinyl ether monomer represented by the general formula: CF2?CF—[OCF2CF(CF3)]aO(CF2)bO[CF(CF3)CF2O]c—CF?CF2 wherein a+c is an integer of 0 to 4 and b is an integer of 2 or more, to a copolymerization reaction; wherein the perfluoroalkyl divinyl ether monomer is added for copolymerization separately before and after the copolymerization reaction starts, or the total amount thereof is added for copolymerization after the copolymerization reaction starts. A peroxide-crosslinked molded product of the obtained fluorine-containing elastomer exhibits high compression set characteristic, while reducing a decrease in breaking strength, a decrease in elongation at break or an increase in hardness.

Abstract: Disclosed is a peroxide-crosslinkable fluoroelastomer obtained by copolymerization of 0.1 to 20 mol % of a mixture of fluoroolefin iodides represented by the general formulae: CnF2n+1CF2CH?CF(CF2CF2)mI [Ia] and CnF2n+1CF?CHCF2(CF2CF2)mI [Ib], wherein n is an integer of 0 to 5, and m is an integer of 1 to 3. The peroxide-crosslinkable fluoroelastomer is copolymerized with a monomer having a side chain containing a peroxide-crosslinkable halogen atom, and has excellent vulcanizate physical properties and improved compression set characteristics when subjected to peroxide crosslinking.

Abstract: Disclosed is a fluorine-containing polymer aqueous dispersion in which a fluorine-containing polymer is dispersed using, as an emulsifier, a polyfluoroalkylphosphonic acid salt represented by the general formula: CnF2n+1(CH2CF2)a(CF2CF2)b(CH2CH2)cP(O)(OM1)(OM2)??[I], wherein M1 is a hydrogen atom, an alkali metal, an ammonium base, or an organic amine base, M2 is an alkali metal, an ammonium base, or an organic amine base, n is an integer of 1 to 6, a is an integer of 1 to 4, b is an integer of 1 to 3, and c is an integer of 1 to 3. This fluorine-containing polymer aqueous dispersion uses a polyfluoroalkylphosphonic acid salt with a low bioaccumulation potential as an emulsifier, and has excellent mechanical stability.

Abstract: A mixture of polyfluoroalkadienes represented by the general formulae: CF3(CF2)nCF?CH(CF2)m+1CH?CH2 [Ia] and CF3(CF2)n+1CH?CF(CF2)mCH?CH2 [Ib], wherein n is an integer of 0 to 5, and m is an integer of 0 to 6, is obtained as a mixture fraction of products [Ia] and [Ib] by reacting a polyfluoroalkyl iodide represented by the general formula: CF3(CF2)n+1CH2(CF2)m+1(CH2CH2)I [II], with an organic basic compound. The polyfluoroalkadiene mixture is compounds having a perfluoroalkyl group in which the number of successive CF2 groups is 5 or less, and is effectively used as a copolymerizable monomer in the production of resinous or elastomeric fluorine-containing copolymers, which are used as active ingredients of surface-treating agents, such as water- and oil-repellents and mold-release agents.

Abstract: A polyfluoroalkane carboxylic acid represented by the following general formula: CnF2n+1(CH2CF2)m(CF2CF2)l?1CF2COOM (M: an alkali metal, a NH4 group or H; n: an integer of 1 to 6; m: an integer of 1 to 4; and l: 1 or 2) can be produced by hydrolysis reaction of polyfluoroalkane carboxylic acid fluoride represented by the following general formula: CnF2n+1(CH2CF2)m(CF2CF2)l?1CF2COF, where its carboxylic acid salt can be formed as an alkali metal salt, or a NH4 salt. The polyfluoroalkane carboxylic acid (or its salt) can act as a surfactant having distinguished monomer emulsifiability and latex stability when used as an emulsifying agent or as a dispersing agent for polymerization reaction of fluorine-containing monomers, or as an effective surfactant capable of enhancing the micelles solubility of fluorine-containing monomers such as vinylidene fluoride, etc., when used as an emulsifying agent or a dispersing agent for homopolymerization or copolymerization reaction of vinylidene fluoride.

Abstract: Disclosed is a mixture of fluoroolefin iodides represented by the general formulae: CnF2n+1CF2CH?CF(CF2CF2)mI [Ia] and CnF2n+1CF?CHCF2(CF2CF2)mI [Ib] wherein n is an integer of 0 to 5, and m is an integer of 1 to 3. The fluoroolefin iodide mixture is produced by subjecting a fluoroalkyl iodide represented by the general formula: CnF2n+1CF2CH2CF2(CF2CF2)mI [II] wherein n is an integer of 0 to 5, and m is an integer of 1 to 3, to an HF-elimination reaction in the presence of a basic compound.

Abstract: A polyfluoroalkane carboxylic acid represented by the following general formula: CnF2n+1(CH2CF2)m(CF2CF2)l?1CF2COOM (M: an alkali metal, a NH4 group or H; n: an integer of 1 to 6; m: an integer of 1 to 4; and l: 1 or 2) can be produced by hydrolysis reaction of polyfluoroalkane carboxylic acid fluoride represented by the following general formula: CnF2n+1(CH2CF2)m(CF2CF2)l?1CF2COF , where its carboxylic acid salt can be formed as an alkali metal salt, or a NH4 salt. The polyfluoroalkane carboxylic acid (or its salt) can act as a surfactant having distinguished monomer emulsificability and latex stability when used as an emulsifying agent or as a dispersing agent for polymerization reaction of fluorine-containing monomers, or as an effective surfactant capable of enhancing the micelles solubility of fluorine-containing monomers such as vinylidene fluoride, etc., when used as an emulsifying agent or a dispersing agent for homopolymerization or copolymerization reaction of vinylidene fluoride.

Abstract: Disclosed is a mixture of fluoroolefin iodides represented by the general formulae: CnF2n+1CF2CH?CF(CF2CF2)mI [Ia] and CnF2n+1CF?CHCF2(CF2CF2)mI [Ib] wherein n is an integer of 0 to 5, and m is an integer of 1 to 3. The fluoroolefin iodide mixture is produced by subjecting a fluoroalkyl iodide represented by the general formula: Cn2n+1CF2CH2CF2(CF2CF2)mI [II] wherein n is an integer of 0 to 5, and m is an integer of 1 to 3, to an HF-elimination reaction in the presence of a basic compound.

Abstract: Disclosed is a peroxide-crosslinkable fluoroelastomer obtained by copolymerization of 0.1 to 20 mol % of a mixture of fluoroolefin iodides represented by the general formulae: CnF2n+1CF2CH?CF(CF2CF2)mI [Ia] and CnF2n+1CF?CHCF2(CF2CF2)mI [Ib], wherein n is an integer of 0 to 5, and m is an integer of 1 to 3. The peroxide-crosslinkable fluoroelastomer is copolymerized with a monomer having a side chain containing a peroxide-crosslinkable halogen atom, and has excellent vulcanizate physical properties and improved compression set characteristics when subjected to peroxide crosslinking.

Abstract: A mixture of polyfluoroalkadienes represented by the general formulae: CF3(CF2)nCF?CH(CF2)m+1CH?CH2 [Ia] and CF3(CF2)n+1CH?CF(CF2)mCH?CH2 [Ib], wherein n is an integer of 0 to 5, and m is an integer of 0 to 6, is obtained as a mixture fraction of products [Ia] and [Ib] by reacting a polyfluoroalkyl iodide represented by the general formula: CF3(CF2)n+1CH2(CF2)m+1(CH2CH2)I [II], with an organic basic compound. The polyfluoroalkadiene mixture is compounds having a perfluoroalkyl group in which the number of successive CF2 groups is 5 or less, and is effectively used as a copolymerizable monomer in the production of resinous or elastomeric fluorine-containing copolymers, which are used as active ingredients of surface-treating agents, such as water- and oil-repellents and mold-release agents.