ANTIFOULING COATING COMPOSITION, COPOLYMER FOR ANTIFOULING COATING COMPOSITION, AND COATED ARTICLE HAVING SURFACE THAT IS PROVIDED WITH ANTIFOULING COATING FILM WHICH IS FORMED USING THE COMPOSITION

摘要

ANTIFOULING COATING COMPOSITION, COPOLYMER FOR ANTIFOULING COATING COMPOSITION, AND COATED ARTICLE HAVING SURFACE THAT IS PROVIDED WITH ANTIFOULING COATING FILM WHICH IS FORMED USING THE COMPOSITIONProvided is an antifouling coating composition having excellent stability in long-term storage. Also, provided is a copolymer which can maintain stable10 coating film solubility and antifouling performance without causing coating film defects such as cracks during long-term seawater treatment and which has a certain specific structure in order to produce an antifouling coating film having increased environment safety. Disclosed is an antifouling coating composition, having a copolymer A obtainable by copolymerizing (a) 55 to 80% by mass of a15 t-butyldiphenylsilyl acrylate monomer and (b) 20 to 45% by mass of an ethylenically unsaturated monomer other than the monomer (a), wherein the monomer (b) is at least one monomer selected from the group consisting of methyl methacrylate, butyl (meth)acrylate, and 2-methoxyethyl (meth)acrylate.20 [No Figure]