Patent ID: 7144632

Claim:
An aliphatic-aromatic copolyetherester comprising an acid component, a glycol component, and 0 to about 5.0 mole percent based on 100 mole % acid component of a polyfunctional branching agent selected from polyfunctional acid, glycol or mixtures thereof, wherein the acid component comprises a. about 90.0 to about 20.0 mole percent of an aromatic dicarboxylic acid component based on 100 mole percent total acid component, and b. about 10.0 to about 80.0 mole percent of an aliphatic dicarboxylic acid component based on 100 mole percent total acid component, and wherein the glycol component comprises a. about 99.9 to about 92.0 mole percent of a single glycol component selected from a first glycol component group consisting of ethylene glycol, 1,3-propanediol and 1,4-butanediol, b. about 0.1 to 3.0 about mole percent of a poly(alkylene ether) glycol component, c. 0 to about 5.0 mole percent of one or more of a second glycol component that is different than the single component selected from the first glycol component group based on 100 mole percent total glycol component, provided that said poly(alkylene ether) glycol component comprises a poly(alkylene ether) glycol other than poly (1,2-propylene glycol).