ANTIFOULING COATING COMPOSITION, PROCESS FOR PRODUCING THE COMPOSITION, ANTIFOULING COATING FILM FORMED FROM THE COMPOSITION, COATED OBJECT HAVING THE COATING FILM ON SURFACE, AND METHOD OF ANTIFOULING TREATMENT BY FORMATION OF THE COATING FILM

摘要

The present invention relates to a composition for forming an antifouling coating film that is highly environmentally friendly, can effectively exhibit an antifouling effect in seawater for a long period of time, and furthermore exhibits a stable coating film dissolving amount even in a sea area having a high seawater temperature. The present invention relates to an antifouling coating composition containing:
(1) a triisopropylsilyl (meth)acrylate copolymer obtained by copolymerizing (a) 30 to 65 weight% of triisopropylsilyl (meth)acrylate, (b) 5 to 50 weight% of methyl methacrylate, and (c) 0 to 60 weight% of other (meth)acrylic ester, the copolymer having a glass transition temperature of 20°C to 70°C and a number average molecular weight of 5,000 to 30,000:
(2) at least one salt selected from the group consisting of rosin zinc salts, zinc salts of rosin derivatives, rosin copper salts and copper salts of rosin derivatives: and
(3) a cuprous oxide,
wherein the antifouling coating composition is substantially free from rosins and rosin derivatives containing one or more free carboxyl groups.