Compatible blend systems of oxygen barrier polymers and...

Details Compatible blend systems of oxygen barrier polymers and... Compatible blend systems of oxygen barrier polymers and...

2007-03-06

2007-03-06

Mullis, Jeffrey (Department: 1711)

Stock material or miscellaneous articles

Composite

Of polyamide

C428S500000, C428S689000, C524S323000, C524S359000, C524S398000, C524S401000, C524S403000, C524S413000, C524S435000

Reexamination Certificate

active

09800418

ABSTRACT:
Herein is disclosed an oxygen barrier composition comprising an oxygen barrier polymer and an oxygen scavenging polymer. The composition can be in the form of a physical blend or a cross-linked blend, and can further comprise a compatibilizer, a transesterification catalyst, or both. Preferably, the oxygen barrier polymer is poly(ethylene/vinyl alcohol) (EVOH), polyethylene terephthalate (PET), or polyamide other than MXD6. Preferably, the oxygen scavenging polymer comprises an ethylenic backbone and a pendant cyclic olefinic group, or the oxygen scavenging polymer is a polyamide derived at least in part from a xylene diamine-based monomer.The oxygen barrier composition can be formed into an oxygen barrier layer of a packaging article. Such layers and articles, and methods for making same, are also disclosed.

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