| abstract |
(57) Abstract: (A) On the surface of at least one antifouling coating film formed from an antifouling coating material containing a copolymer containing a polymerizable unsaturated carboxylic acid metal salt component unit, (B) A composite antifouling coating formed by laminating at least one antifouling coating formed from an antifouling coating containing a copolymer containing a polymerizable unsaturated carboxylic acid silyl ester component unit. The composite antifouling coating film of the present invention is a coating composition comprising an antifouling coating material containing a copolymer containing a polymerizable unsaturated metal carboxylate component unit provided on a substrate to be coated such as an old coating film. On the film, because it is a composite coating film formed of a coating film made of an antifouling paint containing a polymerizable unsaturated carboxylic acid silyl ester component unit-containing copolymer, excellent adhesion with an old coating film, It can be applied directly on the old paint film to be repaired or repainted, which is excellent in economy and work efficiency. |