Patent ID: 7799838
Filing Date: 2010-09-21
Classification: C08J,C08L,Y02W

Abstract:
1. A composition comprising (1) from 50 to 99 wt % of a modified, random copolyetherester containing: (2) from 1 to 50 wt % of a modified, random polybutylene terephthalate copolymer that is derived from a depolymerized polyethylene terephthalate component selected from the group consisting of polyethylene terephthalate, polyethylene terephthalate copolymers, and combinations thereof; and that contains at least one residue derived from the depolymerized polyethylene terephthalate component; wherein the copolyetherester, the modified, random polybutylene terephthalate copolymer, and optionally any additives, are present in a total amount of 100 wt %; and wherein the copolyetherester has wherein the composition has a modulus of elasticity at least 8.3% greater than the composition in which the copolyetherester is not derived from a depolymerized polyethylene terephthalate component, when the compositions are aged for 1000 hours at 140° C.