abstract |
An antifouling coating composition capable of forming a coating film having an appropriate degree of consumption to express a long-term antifouling effect by having excellent coating film hardness and coating film physical properties, and having a low viscosity without too high a volatile organic compound content, and an antifouling coating composition thereof A preferred polymer-containing composition for obtaining a coating composition is provided. The polymer-containing composition includes a (meth)acrylic copolymer (A-1), wherein the (meth)acrylic copolymer (A-1) has a structural unit (U11) having a carboxylate ionically bonded to a divalent metal atom (U11) ) or a structural unit (U12), the weight average molecular weight is 1000 to 5000, and the coating film hardness (Martens hardness) of the polymer-containing composition is 2.5 N/mm 2 or more. |