Aqueous coatings based on copolymers with a mixture of unsaturated esters of polymeric polyol and bisphenol-ethylene oxide adduct
AssigneeDeSoto, Inc.
InventorsKazys Sekmakas, Raj Shah
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Abstract
A low temperature-curing aqueous coating composition contains an acidic solution copolymer of monoethylenically unsaturated monomers, including about 2% to about 20% of carboxyl-functional monomer based on the weight of the copolymer, with a mixture of ethylenically unsaturated esters of ethylenically unsaturated fatty acids with organic solvent soluble and water insoluble polymeric polyol and water soluble bisphenol-ethylene oxide adduct polyol. Cure is preferably obtained using aminoplast and phenoplast curing agents, and the curing temperature is further lowered because the copolymer includes residual unsaturation providing an air dry capacity.
Claims8
A low temperature-curing aqueous coating composition comprising water having dispersed therein with the aid of a volatile base, an acidic solution copolymer of monoethylenically unsaturated monomers, including about 2% to about 20% of carboxyl-functional monomer based on the weight of the copolymer, with a mixture of ethylenically unsaturated esters of ethylenically unsaturated fatty acids with organic solvent soluble and water insoluble polymeric polyol and water soluble bisphenol-ethylene oxide adduct polyol, there being a total of more than two moles of unsaturated fatty acid per mol of said polymeric polyol, and said bisphenol-ethylene oxide polyol constituting from 10% to 125% of the weight of said polymeric polyol.
Dependencies are inferred from the claim text.