New uses for oxygen scavenging compositions

B - Operations – Transporting – 65 – D

Patent

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Details

B65D 65/38 (2006.01) B32B 27/06 (2006.01) B32B 27/12 (2006.01) B32B 33/00 (2006.01) B65D 65/40 (2006.01) C09K 15/08 (2006.01)

Patent

CA 2300099

Oxygen scavenging compositions comprising at least one reducible organic compound which is reduced under predetermined conditions, the reduced form of the compound being oxidisable by molecular oxygen, wherein the reduction and/or subsequent oxidation of the organic compound occurs independent of the presence of a transition metal catalyst. Uses for the above compounds provide a flexible packaging material, a carton, a bag-in-box package, a thermoformed tray, cup or tub, a resin for blow-moulding, an overwrap, shrinkwrap , tight label or coating, a closure liner and a can.

L'invention se rapporte à des compositions désoxygénantes comportant au moins un composé organique réductible qui est réduit dans des conditions préétablies, la forme réduite de ce composé pouvant être oxydée par de l'oxygène moléculaire. Dans ces compositions, la réduction et/ou l'oxydation subséquente du composé organique se produit indépendamment de la présence d'un catalyseur à base d'un métal de transition. L'invention se rapporte notamment à l'utilisation de ces compositions dans une matière d'emballage souple, un cartonnage pliant, un carton-outre, un plateau thermoformé, un gobelet ou coupelle, une résine pour moulage par soufflage, une surenveloppe, un film rétractable d'emballage, une étiquette ou revêtement étanche, une garniture de fermeture et une boite en métal.

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