Patent ID: 8816016
Filing Date: 2014-08-26
Classification: C08K,C09D

Abstract:
1. An aqueous thermosetting composition comprising (a) polymer particles of at least one emulsion copolymer comprising from 10% to 20% by weight of one or more monomers comprising carboxylic acid groups, or anhydride groups thereof in copolymerized form; (b) at least one polyol, wherein the polyol has a formula molecular weight of less than 2000 and at least two hydroxyl groups, and wherein the ratio of the number of equivalents of hydroxyl groups of said polyol to the number of equivalents of said carboxylic acid groups, anhydride groups, or salts thereof of said at least one emulsion (co)polymer is from 10/1 to 1/10; and (c) at least one water-soluble polyacid or salt thereof chosen from polycarboxy (co)polymers; citric acid; phosphorous-containing acids; salts thereof; and mixtures thereof in an amount no greater than 10%, by weight based on the sum of the weight of the emulsion copolymer (a) and the weight of the water-soluble polyacid or salt thereof, all weights being taken on a solids basis; wherein the aqueous thermosetting composition has a weight ratio of (a) to combined weights of (a), (b), and (c), of greater than 0.5:1.0, based on the weights of solids of each component; and wherein the pH of the aqueous thermosetting composition is no greater than 7.5.