Patent ID: 8110609
Filing Date: 2012-02-07
Classification: C08G,C08J,Y02W

Abstract:
1. A composition comprising a modified, random copolyetherester containing: (a) a modified, random polytrimethylene terephthalate copolymer block that is derived from 1,3-propane diol and a polyethylene terephthalate component selected from the group consisting of polyethylene terephthalate and polyethylene terephthalate copolymers and combinations thereof, and contains at least one residue derived from the polyethylene terephthalate component; and (b) a polyalkylene oxide copolymer block that is derived from a polyethylene terephthalate component and polybutylene oxide glycol, and that contains polybutylene oxide and at least one residue derived from the polyethylene terephthalate component; wherein the at least one residue derived from the polyethylene terephthalate component comprises a diethylene glycol group in an amount ranging from 0.1 to 10 mole %, based on 100 mole % of glycol in the composition; and wherein the composition has a modulus of elasticity that is at least 80%, as compared to the modulus of elasticity of a copolyetherester derived from (1) polytrimethylene terephthalate derived from a monomer component selected from the group consisting of terephthalic acid, isophthalic acid, alkyl esters of terephthalic acid, hydroalkyl esters of terephthalic acid, alkyl esters of isophthalic acid, and 1,3-propane diol, (2) polybutylene oxide glycol, and (3) combinations thereof.