| abstract |
A composition comprising: (a) 50% to 100%, by total weight of the composition, of a mixture of polyesters comprising (i) a first polyester having a weight average molecular weight of 10,000 to 80,000 and a glass transition temperature greater than 45 ° C to 100 ° C, and (ii) a second polyester having a weight average molecular weight of 10,000 to 70,000 and a glass transition temperature of -10 ° C to 45 ° C, wherein the Tg of the first polyester is 5 ° C to 60 ° C higher than the Tg of the second polyester, and in which the first polyester and the second polyester are present in a range of weights from 1 to 3 to 1 to 9; (b) 0% to 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 500 to 15,000, an epoxy resin protected in the ends having a weight average molecular weight of 300 to 10,000, an acrylic resin having a weight average molecular weight of 15,000 to 100,000, a polyolefin resin having a weight average molecular weight of 15,000 to 1,000,000, and their mixtures; (c) 0% to 50%, by total weight of the composition, of an inorganic filler; and (d) 0% to 4%, by total weight of the composition, of a flow control agent; and (e) 0% to 50%, by total composition weight, of a second modifying polymer; wherein said composition is in the form of a powder. |