Patent ID: 8138246
Filing Date: 2012-03-20
Classification: C08F,C08L,H01B,H01G,H01M,Y02E

Abstract:
1. A polymer electrolyte which comprises an ionic liquid (A) and a block copolymer (B), wherein block copolymer (B) comprises a Q-P-Q triblock copolymer or a Q-P-Q-P-Q pentablock copolymer, wherein polymer block (P) is a homopolymer block or a copolymer block of at least one members selected from the group consisting of an ester of a (meth)acrylic acid with an alkanol having 1 to 3 carbon atoms; a monoester of a (meth)acrylic acid with an alkylene glycol having 2 to 4 carbon atoms; a monoester of a (meth)acrylic acid with a dialkylene glycol having 4 to 6 carbon atoms; a monoester of a (meth)acrylic acid with a trialkylene glycol having 6 to 9 carbon atoms; an ester of a (meth)acrylic acid with an alkoxyalkanol having 2 to 4 carbon atoms; an ester of a (meth)acrylic acid with a monomethyl ether of a dialkylene glycol having 4 to 6 carbon atoms; an ester of a (meth)acrylic acid with a monomethyl ether of a trialkylene glycol having 6 to 9 carbon atoms; an ester of a (meth)acrylic acid with a monoethyl ether of a dialkylene glycol having 4 to 6 carbon atoms; an ester of a (meth)acrylic acid with a monoethyl ether of a trialkylene glycol having 6 to 9 carbon atoms; and an ester of a (meth)acrylic acid with an aminoalkanol having 2 to 4 carbon atoms, and polymer block (Q) is a polymer block having an aromatic vinyl compound unit as a repeating unit; a crystalline polyolefin block; a polymer block of an ester of methacrylic acid with an alkanol having 4 or more carbon atoms; a polycyclohexyl methacrylate block; a polyisobornyl methacrylate block; a random copolymer block of n-butyl methacrylate or isobutyl methacrylate with isobornyl methacrylate; and the polymer block (P) is compatible with ionic liquid (A) and the polymer blocks (O) are incompatible with ionic liquid (A).