| abstract |
An antifouling coating composition capable of forming a coating film having an appropriate degree of consumption for expressing a long-term antifouling effect due to excellent coating film hardness and properties of the coating film, and also having a low viscosity and low volatile organic compound content, and the antifouling coating composition A preferred polymer-containing composition is provided to obtain a coating composition. The polymer-containing composition contains a (meth)acrylic copolymer (A-1), and the (meth)acrylic copolymer (A-1) is a structural unit having a carboxylate ionic bonded to a divalent metal atom (U11 ) Or the 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. |