Patent ID: 6509122
Filing Date: 2003-01-21
Classification: C08F,C08G,C08L,H01M,Y02E

Abstract:
A polymer electrolyte comprising: a polymer gel holding a nonaqueous solvent containing an electrolyte, wherein said polymer gel comprises a polymer containing (I) monomeric units derived from at least one compound having one copolymerizable vinyl group and (II) monomeric units derived from a compound (II-a) represented by one of formulae (1) and (2):H2C&boxH;C(R)COO(CH2CH2O)nâ€”COC(R)&boxH;CH2â€ƒâ€ƒ(1) wherein n represents an integer 1 to 23; R represents an alkyl group having 1 to 4 carbon atoms, H2C&boxH;C(R)COO[(CH2CH2O)pâ€”(CH2CH(R1)O)q(X)râ€”(CH2CH2O)p]COC(R)&boxH;CH2â€ƒâ€ƒ(2) wherein R represents an alkyl group having 1 to 4 carbon atoms; R1 represents a hydrogen atom or a methyl group; X represents a bisphenol; p represents an integer of 16 or smaller; q represents an integer of 34 or smaller; and r represents 1, wherein said monomeric units (I) are derived from at least one compound selected from the group consisting of (meth)acrylonitrile, an (&agr;-alkyl) acrylic acid, an alkyl(&agr;-alkyl)acrylate, a fluoroalkyl(&agr;-alkyl)acrylate, a fluoroalkyl(&agr;-fluoroalkyl)acrylate, a vinyl ester, a vinylalkyl ether, an allylalkyl ether, an allyl ester, vinyl alcohol, vinyl chloride, vinylidene chloride, and a cyclic olefin.