K 2007: Eastman Breaks Ground on Copolyester

October 27, 2007

Eastman Chemical is introducing at K 2007 a new material it describes as the most important plastic resin developed in many years. Tritan copolyester uses a new monomer (not identified) to provide a higher glass transition temperature (T_g) than traditional copolyesters. The first grade will target polycarbonate applications in housewares where the new material offers superior chemical resistance and hydrolytic stability. Three commercial applications were announced at the show: Camelbak Products, Petaluma, CA, for a re-usable sports water bottle; VitaMix Corp., Olmstead Falls, OH, for a blender container; and Carlisle Food Service Products,Oklahoma City, OK; for a commercial soup bowl. CamelBak and Vita-Mix specified the new resin in part because it contains no bisphenol-A. Tom Pecorini, senior research associate at Eastman, says the new material has comparable shrinkage rates to PC, requiring no changes to the tooling. Another benefit: Tritan has a lower density than PC, boosting yield. Eastman said it plans to extend the grade slate, but gave no details.

Posted by Doug Smock on October 27, 2007 | Comments (1)

Industries: Materials Innovations from K 2007

July 29, 2008

In response to: K 2007: Eastman Breaks Ground on Copolyester
john hoppe commented:

what about chemical leaching and or reactions to foods - will the new copolyester chemically degrade with time and leach chemicals into the consumers bodys as toxins?

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