Patent ID: 6472472
Filing Date: 2002-10-29
Classification: B05D,C08K,C08L,C09D,Y10T

Abstract:
A composition comprising:(a) about 50% to about 100%, by total weight of the composition, of a blend of polyesters comprising (i) a first polyester having a weight average molecular weight of about 10,000 to about 80,000 and a glass transition temperature of greater than 45Â° C. to about 100Â° C., and (ii) a second polyester having a weight average molecular weight of about 10,000 to about 70,000 and a glass transition temperature of about âˆ’10Â° C. to about 45Â° C., wherein the Tg of the first polyester is about 5Â° C. to about 60Â° C. higher than the Tg of the second polyester, and wherein the first polyester and the second polyester are present in a weight range of about 1 to 3 to about 1 to 9; (b) 2% to about 25%, by total weight of the composition, of a modifying resin selected from the group consisting of an epoxy or phenoxy resin having an epoxy equivalent weight of about 500 to about 15,000, an end-capped epoxy resin having a weight average molecular weight of about 300 to about 10,000, an acrylic resin having a weight average molecular weight of about 15,000 to about 100,000, a polyolefin resin having a weight average molecular weight of about 15,000 to about 1,000,000, and mixtures thereof; (c) 0% to about 50%, by total weight of the composition, of an inorganic filler; and (d) 0% to about 4%, by total weight of the composition, of a flow control agent; and (e) 0% to about 50%, by total weight of the composition, of a second modifying polymer, said composition in the form of a powder having a particle size of 100 microns or less.