| 摘要 |
FIELD: chemistry.SUBSTANCE: invention relates to environmentally safe antifouling film coating compositions. The antifouling coating composition contains: (A) a copolymer which contains a triorganosilyl ester with glass-transition point of 30-80°C, obtained by mixing (a) a triorganosilyl(meth)acrylate monomer of general formula:wherein Rdenotes a hydrogen atom or methyl; R, Rand Rare identical or different, a branched alkyl or phenyl group containing 3-6 carbon atoms; and (b) a monomer which is a (meth)crylic ester which is capable of copolymerisation with the triorganosilyl(meth)acrylate monomer, and (C) a salt of modified colophony, which is a salt of modified zinc and/or copper colophony containing 80 wt % or more, two or more substances selected from dihydroabietic acid, tetrahydroabietic acid, dehydroabietic acid, pimaric acid, isopimaric acid and dihydropimaric acid, said copolymer (A) having glass-transition point of 30-80 °C.EFFECT: invention enables to obtain a film coating for which there is low probability of formation of hair cracks and similar defects of the film coating even when immersed in seawater for a long period of time, and which prevents or inhibits sticking of slime.7 cl, 5 tbl, 12 ex |
