ANTIFOULING COATING COMPOSITION, ANTIFOULING COATING FILM, SHIP OR UNDERWATER STRUCTURE BOTH COATED WITH THE SAME FILM, AND METHOD FOR IMPARTING ANTIFOULING PROPERTY TO SHIPPING SHELL PLATE OR UNDERWATER STRUCTURE

摘要

PROBLEM TO BE SOLVED: To obtain an antifouling coating composition enabling a coating film capable of exhibiting antifouling property to periphyton to ships, etc., for a long term to be formed without fear of the environmental pollution by including a copolymer having polymerizable unsaturated carboxylic acid metal compound unit and copper, etc. SOLUTION: This coating comprises (A) (preferably 1-80 pts.wt. based on the total weight of ingredients A and B) copolymer having polymerizable unsaturated carboxylic acid metal compound unit such as a copolymer having monomer unit derived from a compound of the formula R1-COOM-OH [wherein R1 is CH2=C(CH3), HOOC-CH=CH or the like; and M is a metal atom], (B) (preferably 99-20 pts.wt. based on the total weight of ingredients A and B) copper and/or an inorganic copper compound and (C) a metal such as zinc having a lower oxidation-reduction potential than copper and moreover preferably (D) an organic antifouling agent such as 4,5-dichloro-2-n-6-octyl-4- isothiadizolin-3-one.