Multi-component oxygen scavenger system useful in film packaging

Details Multi-component oxygen scavenger system useful in film packaging Multi-component oxygen scavenger system useful in film packaging

1995-02-15

1997-08-26

Wu, Shean C.

Compositions

Reductive bleachant, deoxidant, reductant, or generative

Deoxidant or oxygen scavenging

428 353, 428 354, 428 358, 428 359, 252380, 252383, C09K 1502, B32B 100, B32B 2718

Patent

active

056607610

ABSTRACT:
An improved oxygen scavenging system is provided. The system involves an oxygen scavenging phase containing at least one oxygen-scavenger and a second phase comprising at least one catalyst effective in catalyzing a scavenging reaction. The oxygen scavenging phase is substantially devoid of any catalyst of the scavenging reaction and the second phase is effectively separate from the oxygen scavenging phase. Nevertheless, the oxygen scavenging system provides excellent scavenging capabilities while avoiding many of the prior art problems, such as undesired oxidation during high temperature processing when the system is incorporated into a multi-layer film.

REFERENCES:
patent: 5021515 (1991-06-01), Cochran et al.
patent: 5211875 (1993-05-01), Speer et al.
patent: 5350622 (1994-09-01), Speer et al.
patent: 5378428 (1995-01-01), Inoue et al.
patent: 5425896 (1995-06-01), Speer et al.
patent: 5498364 (1996-03-01), Speer et al.

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