| abstract |
The present invention provides an antifouling coating composition and a preferable polymer-containing composition for obtaining the antifouling coating composition, which can form a coating film with excellent hardness and coating properties, A coating film that has an appropriate degree of consumption for exhibiting a long-term antifouling effect, and the viscosity is not too high, and the content of volatile organic compounds can be reduced. The polymer-containing composition includes a (meth)acrylic copolymer (A-1), and the (meth)acrylic copolymer (A-1) includes an ion-bonded divalent metal ion It has the structural unit (U11) or the structural unit (U12) of carboxylic acid ester, and the weight average molecular weight is 1000 to 5000, and the coating film hardness (Martens hardness) of the polymer-containing composition is 2.5N/mm 2 or more . |