Patent ID: 8058360
Filing Date: 2011-11-15
Classification: B29C,B29K,C08J,C08K,C08L,Y10T

Abstract:
1. An extruded polymer blend, comprising: a. about 3 to about 20 weight percent of one or more epoxy-containing impact modifying polymers, based on the total weight of the polymer blend; and b. one or more polyethylene terephthalate homopolymers or copolymers comprising aluminum atoms in an amount ranging from about 5 ppm to about 35 ppm, lithium atoms in an amount ranging from about 5 ppm to about 15 ppm, and phosphorus atoms in an amount ranging from about 10 ppm to about 70 ppm, in each case based on the weight of the one or more polyethylene terephthalate homopolymers or copolymers, wherein the one or more polyethylene terephthalate homopolymers or copolymers are made without the addition of any catalytically active metal or metal compounds other than the aluminum atoms and lithium atoms, wherein the one or more polyethylene terephthalate homopolymers or copolymers comprise: wherein the extruded polymer blend has a ductile-to-brittle transition temperature of −25° C. or less at an intrinsic viscosity of the polyethylene terephthalate (B) 0.88 dL/g or less.