AQUEOUS COATING COMPOSITIONS COMPRISING ACRYLIC OLIGOMERS, HIGH MOLECULAR WEIGHT POLYMERS AND CROSSLINKERS

摘要

This invention discloses stable water-based thermosettable coating compositions particularly adapted for the direct roll coating of substrates. The composition comprises (1) an aqueous solution of colloidal solution of a volatile amine or ammonium salt of a high molecular weight carboxylic acid-containing acrylic copolymer, (2) a carboxylic acid-containing acrylic oligomer in the solution, and (3) an aqueous dispersion or solution of a crosslinker; the volatile aqueous phase being by volume 70 to 95% water and 5 to 30% organic solvents, the solids content 15 to 70% by weight and the viscosity between 25 and 150 seconds measured in a number 4 Ford cup.