Patent ID: 7193029

Claim:
An aromatic copolyetherester comprising an acid component, a glycol component, and optionally an effective amount of a color reducing agent, wherein the acid component consists essentially of: a. 98.9 to 1.0 mole percent of an aromatic dicarboxylic acid component based on 100 mole percent total acid component, b. 1.0 to 99.0 mole percent of a hydroxyalkanoic acid component selected from lactic acid, glycolic acid and mixtures thereof, based on 100 mole percent total acid component, c. 0.1 to 10.0 mole percent of a sulfonate component based on 100 mole percent total acid component, and d. 0 to 5.0 mole percent of a polyfunctional branching agent selected from polyfunctional acid, glycol, and mixtures thereof based on 100 mole percent total acid component; and wherein the glycol component comprises: a. about 98.9 to about 1.0 mole percent of a single first glycol component selected from ethylene glycol, 1,3-propanedlol and 1,4-butanediol, based on 100 mole percent total glycol component, b. 0.1 to 30.0 mole percent of a poly(alkylene ether) glycol component having a molecular weight in the range of from about 500 to about 4000, based on 100 mole percent total glycol component, and c. 0 to about 5.0 mole percent of at least one of an other glycol component based on 100 mole percent total glycol component.