Patent ID: 9562162
Date: 2017-02-07
CPC Classifications: C09D

Claim:
1. An aqueous coating composition for blocking stains, comprising: an aqueous dispersion comprising a single stage emulsion copolymer having a glass transition temperature (Tg) of from 0° C. to 45° C. and derived from a single stage emulsion polymerization of ethylenically unsaturated nonionic monomers comprising from greater than 0% to 60% by weight styrene, one or more of 2-ethylhexyl acrylate and butyl acrylate, and greater than 0 to 5% by weight ureido functional monomer; greater than 0 and less than 1.5% by weight of an ethylenically unsaturated strong acid monomer or salt thereof; and greater than 1.5% and less than 3% by weight of methacrylic acid or salt thereof, wherein each % by weight is based on the total amount of monomers polymerized to form the single stage emulsion copolymer, wherein all the copolymers in the dispersion derived from an alkyl ester of acrylic acid or methacrylic acid have a glass transition temperature (Tg) of from 0° C. to 45° C.