Patent ID: 6958366

Claim:
An antifouling coating composition comprising a vinyl polymer (A) having, as a repeating unit, a structural unit (a) represented by the following formula (1): (in the formula (1), X 1 and X 2 each independently represents an ester bond or a carbonyl group; R 1 represents an ethylene structure which forms a covalent bond with the carbonyl carbon atom and X 1 in the formula (1) at the same or adjacent carbon atom; R 2 represents a gem-alkylene group, a vic-alkylene group, an arylmethylidene group or an arylethylene group; and R 3 and R 4 represent an alkyl group or an aryl group, or a hydrocarbon group having a carbonyl group, an ether bond or an ester bond) and an antifouling agent (B).