COPOLYMER AND METHOD FOR MANUFACTURE THEREOF

摘要

A copolymer represented by the general formula: (I) [wherein, A denotes an alkylene group of 2 to 4 carbon atoms, the -A-O-a chain may have at least one oxy-alkylene unit bonded in any possible order, a denotes an integer of the value of 1 to 100, R1 and R2 independently denote a hydrogen atom or a methyl group, X and Y independently denote a monovalent metal atom, a divalent metal atom, an ammonium group, an organic amine group, or -B-O-bR3 (wherein, B denotes an alkylene group of 2 to 4 carbon atoms. the -B-O-b chain may have at least one oxy-alkylene unit bonded in any possible order, b denotes 0 or an integer of the value of 1 to 100, and R3 denotes a hydrogen atom or an alkyl group of 1 to 20 carbon atoms), Z denotes a structural unit derived from a copolymerizable vinyl monomer, m and n each denote 1 where X and Y are each a monovalent metal atom, an ammonium group, an organic amine group, or -B-O-bR3 or 2 where X and Y are each a divalent metal atom, and p, q, and r denote numbers such that 25