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

A silyl (meth)acrylate copolymer which comprises (a) silyl (meth)acrylate constituent units of formula (I), or (III) -CH2-CR(COOSiR<11>R<12>R<13>) wherein R<1> to R<4> and R to R<13> are as defined herein, (b) acrylic unsaturated monomer constituent units of formula (II) or silyl (meth)acrylate constituent units of formula (IV) -CH2-CR(COOSiR<14>R<15>R<16>) wherein R, R<5>, Z and R<14> to R<16> 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.