| abstract |
[PROBLEMS] There is no formation of a residual layer on the surface of a coating film even after long-term immersion, there is no defect in the coating film properties such as cracking and peeling, and the coating film wearability does not change over time and is above a certain speed. The present invention provides a coating composition that can exhibit marine organism adhesion prevention performance for a long period of time and has good recoilability and antifouling performance for marine organisms. A) A rosin compound composed of rosin, a rosin derivative or a rosin metal salt, and B) a branched or branched group in which three alkyl groups or aryl groups (R 1 to R 3 ) are all 3 or more carbon atoms. A homopolymer or copolymer of monomer M having a triorganosilyl group which is a cyclic alkyl group or aryl group and at least one group is a group having 4 or more carbon atoms, or the above monomer A coating composition comprising an organic silyl ester group-containing polymer comprising a copolymer of M and another polymerizable monomer, and C) an antifouling agent as essential components. [Selection figure] None |