Patent ID: 6653423
Filing Date: 2003-11-25
Classification: C08F

Abstract:
A random copolymer comprising:a constituent unit (a1) derived from allylamine or a salt thereof and represented by formula (1): wherein Z is â€”NH2 or a salt thereof; and a constituent unit (a2) derived from a monomer having a phosphorylcholine-like group and represented by formula (2): wherein R1, R2 and R3 are the same or different and each represents a hydrocarbon group having 1 to 4 carbon atoms, R4 represents a hydrogen atom or a methyl group, R5 represents a divalent hydrocarbon group having 12 to 120 carbon atoms, h is an integer from 0 to 10, and j is an integer from 2 to 4; wherein the copolymer contains the constituent unit (a1) derived from allylamine or a salt thereof in an amount of 0.01 to 9 mol % and the constituent unit (a2) derived from the monomer having the phosphorylcholine-like group in an amount of 91 to 99.99 mol %, and wherein the copolymer has a number average molecular weight of 50000 to 5000000.