Stock material or miscellaneous articles – Hollow or container type article – Nonself-supporting tubular film or bag
Patent
1994-08-26
1996-02-20
Tucker, Philip
Stock material or miscellaneous articles
Hollow or container type article
Nonself-supporting tubular film or bag
428 357, 428 366, 428 367, 2065243, 25218828, B32B 100, B29D 2200, C09K 1504
Patent
active
054927420
ABSTRACT:
An oxygen scavenging packages and containers which comprise a 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.
REFERENCES:
patent: 4279350 (1981-07-01), King
patent: 4380597 (1983-04-01), Erwied et al.
patent: 4542010 (1985-09-01), Roman et al.
patent: 5021515 (1991-06-01), Cochran et al.
patent: 5246753 (1993-09-01), Koyama et al.
Derwent Abstract JP 60063465 "Material Comprises a Composition Containing Salicylaldehyde--Ethylene Diamine Metal Complex" ECT. 1983.
CA 111(6):493395 "New Synthetic Colbalt Schiff Base Complexes as Oxygen Carriers" Chen et al. 1989.
Deardurff Larrie A.
Ross Bert A.
Teumac Fred N.
Zenner Bruce D.
Anthony Joseph D.
Tucker Philip
W. R. Grace & Co.-Conn
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