SILYL (METH)ACRYLATE COPOLYMERS, PROCESSES FOR PREPARING THE SAME, ANTIFOULING PAINT COMPOSITIONS CONTAINING THE SILYL (METH)ACRYLATE COPOLYMERS, ANTIFOULING COATING FILMS FORMED FROM THE ANTIFOULING PAINT COMPOSITIONS, ANTIFOULING METHODS USING THE ANTIFOULING PAINT COMPOSITIONS, AND HULLS OR UNDERWATER STRUCTURES COATED WITH THE ANTIFOULING COATING FILMS

摘要

PURPOSE: Provided is silyl (meth)acrylate copolymers which can produce antifouling paints capable of forming antifouling coating films which hardly suffer from occurrence of cracks, have excellent adhesive strength and thereby hardly suffer from peeling, can be favorably controlled in the hydrolysis rate, and are excellent in antifouling performance (antifouling activities), antifouling properties, particularly antifouling properties in a highly fouling environment, and long-term antifouling properties. CONSTITUTION: A silyl (meth)acrylate copolymer is characterized by comprising (a) silyl (meth)acrylate constituent units of formula (I), or (III) -CH2-CR(COOSiR11R12R13) wherein R1 to R4 and R to R13 are as defined herein, (b) acrylic unsaturated monomer constituent units of formula (II) or silyl (meth)acrylate constituent units of formula (IV) -CH2-CR(COOSiR14R15R16) wherein R, R5, Z and R14 to R16 are as defined herein and (c) unsaturated monomer constituent units other than the constituent units (a) and (b), providing that when (a) is a component of formula (I), (b) is a compound of formula (II); when (a) is a compound of formula (III), (b) is a compound of formula (IV); and the total amount of the constituent units (a), (b) and (c) is 100 % by weight; and which has a weight-average molecular weight, as measured by GPC, of not more than 200,000.