Scavenging oxygen

B - Operations – Transporting – 65 – D

Patent

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Details

B65D 51/24 (2006.01) A23L 3/3427 (2006.01) B65B 55/19 (2006.01) B65D 81/26 (2006.01) C08K 5/00 (2006.01) C08K 5/098 (2006.01)

Patent

CA 2676322

A container (22) includes a shell (24) made from a polymer, for example PET, and incorporating a catalyst, for example a palladium catalyst. A closure (40) incorporates a plug which includes a source of hydrogen, for example a hydride. In use, with container (22) including a beverage and closure (40) in position, the headspace in the container will be saturated with water vapor. This vapor contacts the hydride associated with plug (42) and as a result the hydride produces molecular hydrogen which migrates into the polymer matrix of shell (24) and combines with oxygen which may have entered the container through its permeable walls. A reaction between the hydrogen and oxygen takes place, catalysed by the catalyst, and water is produced. Thus, oxygen which may ingress the container is scavenged and the contents of the container are protected from oxidation.

Un récipient (22) inclut une coquille (24) constituée d'un polymère, par exemple du PET, et incorporant un catalyseur, par exemple un catalyseur au palladium. Une fermeture (40) incorpore un bouchon qui inclut une source d'hydrogène, par exemple un hydrure. A l'utilisation, lorsque le récipient (22) inclut une boisson et que la fermeture (40) est en position, l'espace vide dans le récipient sera saturé de vapeur d'eau. Cette vapeur entre en contact avec l'hydrure associé au bouchon (42), en conséquence de quoi l'hydrure produit de l'hydrogène qui migre dans la matrice polymère de la coquille (24) et se combine à l'oxygène qui est susceptible d'entrer dans le récipient à travers ses parois perméables. Une réaction entre l'hydrogène et l'oxygène a lieu, catalysée par le catalyseur, et de l'eau est produite. Ainsi, l'oxygène qui est susceptible d'entrer dans le récipient est piégé et le contenu du récipient est protégé de toute oxydation.

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