Patent ID: 7928175

Claim:
An antifouling paint composition comprising a copolymer obtained by polymerizing a monomer mixture comprising silicon-containing polymerizable monomer (a) having two (meth)acryl end groups wherein the monomer (a) comprises monomer (a 2 ) represented by the following formula (II): CH 2 ═C(R 11 )—CO—O—(C k′ H 2k′ —O—) l′ —C m′ H 2m′ —Si(—(—OSiR 12 R 13 —) r —OSiR 14 R 15 R 16 ) 2 —OSi(—(—OSiR 17 R 18 —) s —OSiR 19 R 20 R 21 ) 2 —C o′ H 2o′ —(—O—C p′ H 2p′ —) q′ —O—CO—C(R 22 )═CH 2 (II) wherein each of R 11 and R 22 independently represent a hydrogen atom or a methyl group; each of k′ and p′ represents an integer of 2 to 5; each of l′ and q′ represents 0 to 50; each of m′ and o′ represents an integer of 2 to 5; each of r and s represents 0 to 20; each of R 12 , R 13 , R 14 , R 15 , R 16 , R 17 , R 18 , R 19 , R 20 , and R 21 independently represent an alkyl group, and wherein said copolymer contains a bivalent metal atom.