Patent ID: 6489381
Filing Date: 2002-12-03
Classification: C04B,C08F,C09D,C09K

Abstract:
A cement-based composition consisting essentially of, per 100 parts by weight of cement, from 5 to 500 parts by weight of a polymer formed froma) 30-99.5% by weight of at least one alkyl ester of (meth)acrylic acid, b) 0.5-10% by weight of at least one alkyl polyethoxy(meth)acrylate of formula 1: where R1 is a hydrogen atom or a methyl group, R2 is a C1 to C4 alkyl group and n is an integer from 1 to 55, c) 0-10% by weight of at least one ethylenically unsaturated mono- or dicarboxylic acid or anhydride, amide or hydroxyalkylamide thereof, d) 0-10% by weight of acrylonitrile or methacrylonitrile, and e) 0-50% by weight of further ethylenically unsaturated compounds selected from the group consisting of divinylbenzene, butanediol diacrylate, ethyldiglycol diacrylate, hexanediol diacrylate, ureidoethyl methacrylate, ureidoethyl methacrylamide, allyl methacrylate, 3-methacryloyloxypropyltrimethoxysilane, acetoacetoxyethyl methacrylate, diacetoneacrylamide, acrylamidoglycolic acid and methyl acrylamidoglycolate methyl ether.