Patent ID: 6767642
Filing Date: 2004-07-27
Classification: C08F,Y10T

Abstract:
A crosslinkable acrylosilane polymer composition having a weight average molecular weight below about 40,000 and a hydroxyl value from about 20 to 160, prepared by polymerizing a mixture of monomers consisting of A, B and optionally C, wherein:(A) is about 5 to 75% by weight, based on the weight of the acrylosilane polymer, of a vinyl alkoxy silane monomer represented by the general formula â€ƒwherein R1 is an aryl or alkyl group having 1 to 10 carbon atoms, R2 is a hydrolysable group, m is 0 or 1, and n is 0 or a positive integer from 1 to 10; (B) is about 25 to 95% by weight, based on the weight of the acrylosilane polymer, of one or more of polymerizable monomers selected from the group consisting of esters of acrylic acid; and (C) is about 0 to 70% by weight, based on the weight of the acrylosilane polymer, of ethylenically unsaturated copolymerizable monomers other than (A) and (B) selected from the group consisting of styrenic monomers, esters of methacrylic acid, and mixtures thereof, with the proviso that when any additional comonomer (C) is present, the weight percentage of any such comonomer is not so great as to reduce the polymer conversion rate below 90%, determined on a percent weight solids basis.