Compositions – Reductive bleachant – deoxidant – reductant – or generative – Deoxidant or oxygen scavenging
Patent
1993-04-07
1995-06-20
Stoll, Robert L.
Compositions
Reductive bleachant, deoxidant, reductant, or generative
Deoxidant or oxygen scavenging
522 66, 252383, 428 352, 428 358, 428 359, C09K 1502, C09K 1504, B29D 2200
Patent
active
054258960
ABSTRACT:
A method of initiating oxygen scavenging by compositions which comprise oxidizable organic compounds and transition metal catalysts is disclosed. The method comprises initiating scavenging by exposing the composition, etc., to radiation. The radiation exposure is preferably electron beam or ultraviolet light and is preferably used on oxygen scavenging compositions which comprise a substituted or unsubstituted ethylenically unsaturated hydrocarbon and a transition metal catalyst. Inclusion of a photoinitiator or antioxidant in the scavenging composition is also preferred to facilitate and/or control the composition's scavenging properties. The method can be used for initiating scavenging in packaging layers or articles for oxygen sensitive products such as food and beverage.
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Database WPI, Derwent Publications, London, AN 79-32145B & JP-A-54 034 337 Hitachi Chemical KK-13 Mar. 1979-Abstract Only.
Database WPI, Derwent Publications, London; AN 78-06986A & JP-A-52 145 798 Hitachi Chemical KK-5 Dec. 1977-Abstract Only.
Morgan Charles R.
Roberts William P.
Speer Drew V.
Anthony Joseph D.
Looper Valerie E.
Stoll Robert L.
W. R. Grace & Co.,-Conn.
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