Antifouling coating composition, coating film formed from said antifoulding coating composition, antifouling method using said antifouling coating composition and hull or underwater structure coated with said coating film
An antifouling coating composition can inhibit or prevent fouling of hulls of ships and other underwater structures. The coating composition includes (A) an antifouling agent, (B) a film-forming copolymer having a number average molecular weight of 1,000 to 50,000, and structural units derived from a trialkylsilyl ester of polymerizable unsaturated carboxylic acid in an amount of 20 to 65% by weight, based on the copolymer, and (C) chlorinated paraffin having 8 to 30 carbon atoms, number average molecular weight of 200 to 1200 and a chlorination ratio of from 35 to 75% by weight. Zinc flower may also be included in the antifouling coating composition in place of or in addition to the antifouling agent (A).
CROSS-REFERENCE TO RELATED APPLICATIONS
This application is a continuation of copending application Ser. No. 08/776,662, filed Jan. 30, 1997, which in turn is the Section 371 Entry into the United States of International Application PCT/JP96/01479, filed May 31, 1996.
Priority Data
Jun 01, 1995 [JP] 7-135503 Jun 01, 1995 [JP] 7-135504 Jun 01, 1995 [JP] 7-135505 Jun 01, 1995 [JP] 7-135506 Nov 15, 1995 [JP] 7-297225
The present invention relates to a process for the preparation of polyorganosilylated carboxylate monomers or polymers thereof, comprising the steps of reacting a cyclosiloxane of formula (R4R5SiO)n with an unsaturated organosilylated carboxylate monomer or a copolymer or a polymer thereof under the presence of a suitable catalyst.
