ANTIFOULING COATING COMPOSITION, ANTIFOULING FILM COATING OBTAINED FROM SAID COMPOSITION, COATED ARTICLE HAVING FILM COATING ON SURFACE, AND TREATMENT METHOD FOR IMPARTING ANTIFOULING PROPERTIES BY FORMING FILM COATING Russian patent published in 2013 - IPC C09D5/16 C09D143/04 C09D193/04 

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 R¹ denotes a hydrogen atom or methyl; R², R³ and R⁴ are 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