Compositions – Reductive bleachant – deoxidant – reductant – or generative – Deoxidant or oxygen scavenging
Patent
1993-09-21
1994-11-15
Stoll, Robert L.
Compositions
Reductive bleachant, deoxidant, reductant, or generative
Deoxidant or oxygen scavenging
252397, 25240053, 252403, 252407, C09K 1504
Patent
active
053645553
ABSTRACT:
An oxygen scavenging composition of a carrier, such as a polymer, which is permeable to both oxygen and water or water vapor and an oxygen scavenging compound of an organic compound or salt thereof dispersed relatively uniformly throughout the polymer in an amount effective to act as an oxygen scavenger. The oxygen scavenging compound is a salicylic acid chelate or complex of a transition metal or a salt thereof. The oxygen scavenging composition is activated for scavenging oxygen by contact with water or water vapor which permeates into or through the carrier. A reducing agent of an ascorbate compound may be added to enhance the performance of the salicylic acid chelate or complex. The oxygen scavenging compound may be added to the composition in a dry state, and is inactive until activated for oxygen scavenging by contact with water or water vapor.
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Deardurff Larrie A.
Ross Bert A.
Teumac Fred N.
Zenner Bruce D.
Advanced Oxygen Technologies, Inc.
Anthony Joseph D.
Stoll Robert L.
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