Patent ID: 6933080

Claim:
A polymer electrolyte for a battery comprising a cured product of a polymer electrolyte forming composition comprising: (a) a polymer consisting of multi-functional ethyleneoxides represented by formula 2, or a mixture of polyethylene glycol di(meth)acrylates represented by formula 1 and multi-functional ethyleneoxides represented by formula 2; (b) one selected from a group consisting of a vinylacetate monomer represented by formula 3, a (meth)acrylate monomer represented by formula 4, and a mixture thereof; and (c) an electrolytic solution comprising a lithium salt and an organic solvent, wherein: R 1 is H or CH 3 , n is an integer from 1 to 100,000, R 2 is H or CH 3 , R 3 is H or CH 3 , R 4 is an alkyl having 1 to 20 carbon atoms, and the sum of a and b is 6.