Patent ID: 8450401

Claim:
A fast hardening aqueous coating composition comprising: an anionically stabilized aqueous dispersion of a copolymer, the copolymer having in polymerized form a polymerization mixture containing two or more ethylenically unsaturated monomers wherein, based on the total weight of all ethylenically unsaturated monomers in the polymerization mixture, from 0 to about 4 weight percent of the monomers are alpha, beta-ethylenically unsaturated aliphatic carboxylic acid monomers; an effective amount of a polyimine or a polyamine; an effective amount of a volatile base; and from about 0.01 to about 5 weight parts of a triazole selected from the group consisting of benzotriazole, salts of benzotriazole, tolyltriazole, salts of tolyltriazole and mixtures thereof, based on 100 weight parts solids of the copolymer; and wherein the composition has a pH of at least about 8.