| abstract |
1. A coating composition for food cans comprising: (a) a polyester / acrylic graft copolymer; (b) a polyester resin; and (c) a crosslinker. 2. The composition of Claim 1, wherein the polyester / acrylic graft copolymer has acrylic grafted to polyester. 3. The composition of Claim 1, wherein the graft copolymer. polyester / acrylic has the polyester grafted to acrylic. 4.- The composition of Claim 1, wherein the polyester in the polyester / acrylic graft copolymer is unsaturated. 5.- The composition of Claim 4, wherein the Polyester in the polyester / acrylic graft copolymer comprises maleic acid or anhydride and the acrylic copolymer comprises styrene. 6. The composition of Claim 1, wherein the polyester in the polyester / acrylic graft copolymer has a hydroxy value. from 0 to 200 and an acid value of less than 10.7.- The composition of Claim 6, wherein the polyester in the polyester / acrylic graft copolymer has a hydroxy value of 30 to 70 and an acid value of less than 5.8.- The composition of Claim 1, wherein the graft copolymer has a weight average molecular weight of 3000 to 250,000.9.- The composition of Claim 1, wherein copolymer of Graft has a weight average molecular weight of 60,000 to 120,000. |