Patent ID: 8354151

Claim:
An aqueous polyurethane coating composition comprising: (a) a water-dilutable hydroxy-functional polyester resin; (b) a water-dilutable aminoplast resin; and (c) a water-dilutable polycarbonate-polyurethane resin, wherein the aqueous polyurethane coating composition comprises (i) 50% to 99% by weight, on a solids basis of the water-dilutable hydroxy-functional polyester resin and a water-dilutable aminoplast resin; and (ii) 50% to 1% by weight on a solids basis of the water-dilutable polycarbonate-polyurethane resin, the weight percents totaling 100%; and wherein the weight ratio on a solids basis of the hydroxy-functional polyester resin to the aminoplast resin is from 50:50 to 90:10; and wherein the polycarbonate-polyurethane resin is non-functional.