ANTIFOULING COATING COMPOSITION WITH STORAGE STABILITY

PURPOSE:To provide titled composition of storage stability, useful for ship bottom paints, etc. comprising a (co)polymer containing a specific group-carrying triorganotin unit, copper (or its compound), and a cyclic ether. CONSTITUTION:The objective composition comprising (A) a polymer or copolymer containing triorganotin unit having, in one molecule, at least one -COOSnR3 group (R is alkyl, cycloalkyl or phenyl) (e.g., a copolymer from a polymerizable unsaturated monobasic acid triorganotin salt and a polymerizable unsaturated monomer), (B) copper or its compound (e.g., cuprous oxide), and (C) a cyclic ether and/or a compound having, in one molecule, two or more ether groups (e.g., tetrahydro-furan). The composition is dissolved in an oragnic solvent or combined with a pigment, carrier, plasticizer, etc., when applied to antifouling coatings for ship bottom.