Patent ID: 8840910
Filing Date: 2014-09-23
Classification: A01N,B63B,C08K,C09D,E02B

Abstract:
1. An antifouling coating composition, comprising a hydrolyzable copolymer (A) and an antifouling agent (B), wherein: the hydrolyzable copolymer (A) is at least one hydrolyzable copolymer selected from the group consisting of: (a1) a metal salt bond-containing copolymer which is an acrylic resin or a polyester resin and has a side-chain end group represented by formula (I): where M is zinc or copper, and R (a2) a metal salt bond-containing copolymer having a component unit derived from a monomer (a21) represented by formula (II): where M is zinc or copper, and R 2 is a hydrogen atom or a methyl group, and a component unit derived from an unsaturated monomer (a22) copolymerizable with the monomer (a21) and comprising at least one unsaturated monomer selected from the group consisting of an alkyl(meth)acrylate, an alkoxyalkyl(meth)acrylate, a hydroxyalkyl(meth)acrylate, and a monobasic acid metal (meth)acrylate represented by formula (IV): where M is zinc or copper, R (a3) a silyl ester copolymer having where R R R R R a component unit derived from an unsaturated monomer (a32) copolymerizable with the monomer (a31) and comprising at least one unsaturated monomer selected from the group consisting of an alkyl(meth)acrylate, an alkoxyalkyl(meth)acrylate, and a hydroxyalkyl(meth)acrylate; the antifouling agent (B) comprises medetomidine; and the composition has superior antifouling properties as compared with a composition of either the hydrolyzable copolymer (A) or the antifouling agent (B) alone.