Patent Number: 6,254,950

Title: Polyester phenylenedi (oxyacetic acid) copolyester blends having improved gas barrier properties

Abstract: This invention relates to polyester compositions that possess improved gas barrier properties. The novel copolyester blends comprise repeat units of phenylenedi(oxyacetic acid). Such copolyesters with improved gas barrier properties are useful in packaging applications where low gas permeability are required for protection or preservation of the contents.

Inventors: Rogers; Martin E. (Blountsville, TN), Barbee; Robert B. (Kingsport, TN), Fagerburg; David R. (Kingsport, TN), Long; Timothy E. (Blacksburg, VA)

Assignee: Eastman Chemical Company

International Classification: C08J 5/18 (20060101); C08L 67/00 (20060101); C08L 67/02 (20060101); C08L 067/02 ()

Expiration Date: 07/03/2018