Patent ID: 7847018
Filing Date: 2010-12-07
Classification: C08F,C08L,C09D,C09J

Abstract:
1. A polymer dispersion comprising a polymer, water, and a surfactant; wherein said polymer comprises and has incorporated therein in polymerized form: an unsaturated silane (i) selected from the group consisting of vinyltrimethoxysilane, vinyltriethoxysilane, vinyltri(2-methoxyethoxy)silane, vinylmethyldimethoxysilane, vinylmethyldiethoxysilane, and combinations thereof, an organo silane (ii) selected from the group consisting of methyltrimethoxysilane, n-propyltrimethoxysilane, n-propyltriethoxysilane, n-propyltri(2-methoxyethoxy)silane, isobutyltrimethoxysilane, isobutyltriethoxysilane, n-hexyltrimethoxysilane, n-octyltrimethoxysilane, n-octyltriethoxysilane, isooctyltrimethoxysilane, isooctyltriethoxysilane, n-hexadecyltrimethoxysilane and combinations thereof, and a monomer selected from the group consisting of methyl methacrylate, butyl acrylate, butylmethacrylate, acrylic acid and combinations thereof; wherein said polymer dispersion is obtained by polymerization of a monomer dispersion comprising: said unsaturated silane (i), said organo silane (ii), said monomer, said surfactant, and said water; wherein in said monomer dispersion: a weight ratio of said monomer to said water is from 40:60 to 55:45, said water has a surfactant content of from 8.8% to 15% by weight of said water, and an amount of said unsaturated silane (i) and said organo silane (ii) ranges from 0.2 to 1.5% by weight, based on the weight of said monomer.