Stock material or miscellaneous articles – Hollow or container type article – Polymer or resin containing
Reexamination Certificate
2006-08-08
2006-08-08
Lipman, Bernard (Department: 1713)
Stock material or miscellaneous articles
Hollow or container type article
Polymer or resin containing
C428S036700, C428S370000, C428S375000, C428S383000
Reexamination Certificate
active
07087277
ABSTRACT:
Herein is disclosed a modified ethylene vinyl alcohol polymer (EVOH) comprising an oxygen scavenging functional group. Preferably, the modified EVOH comprises structures IV, V, and VI:wherein x is an integer greater than or equal to 1, y is an integer greater than or equal to 1, z is an integer greater than or equal to 1, and R comprises a cycloalkenyl group.The modified EVOH is useful in oxygen barrier applications, such as a forming an oxygen barrier layer of a packaging article.Also disclosed are methods of modifying ethylene vinyl alcohol polymers, and using the modified EVOH to make packaging articles with a superior barrier to entry by atmospheric oxygen.
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Cai Gangfeng
Ching Ta Yen
Yang Hu
Chevron Phillips Chemical Company LP
Lipman Bernard
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