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United States of America Patent
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May 23, 2006
Grant Date -
May 30, 2002
app pub date -
Oct 30, 2001
filing date -
Jul 27, 1987
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The present invention provides a wall for a package, which wall comprises, or includes a layer comprising, a composition comprising a polymer and capable of scavenging oxygen through the metal-catalysed oxidation of an oxidizable organic component thereof. The oxidizable organic component is preferably itself a polymer, and may be the only polymer in the composition. Preferred compositions include a blend of 96% polyethylene terephthalate and 4% poly (m-xylyleneadipamide) containing 200 ppm cobalt as catalyst, with good permeance-versus-time performance (3) when formed into a bottle.
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