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(11)    Patent No :    AP 2619    (73) Applicant(s)       
(21)    Application No :    AP/P/2009/004938    COLORMATRIX HOLDINGS, INC., Corporation Service       
            Company, 2711 Centreville Road, Suite 400, Wilmington,       
                   
(22)    Filing Date :    24.01.2008    Delaware 19808,       
(24)            United States of America       
    Date of Grant &    18.03.2013           
                   
(45)    Publication :

(30)  Priority Data    (72) Inventors

    (33) Country    (31) Number    (32) Date    RULE Mark, United States of America   
    US    60/897,158    24.01.2007    VALUS Ronald J, United States of America   
    US    60/998,208    09.10.2007       
                TATTUM Steven Burgess, United Kingdom   
                   
                et al       
                (74) Representative   
(84)    Designated State           
                   
    BW  GH   KE    SD   TZ   UG        HONEY & BLANCKENBERG   
                   
(51)    International    Classification    B65D 51/24 (2006.01)    B65D 81/26 (2006.01)   
            A23L 3/3427 (2006.01)   
(54)    Title

Scavenging oxygen

(57)    Abstract

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 cont ainer (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.

(56)    Documents Cited :    GB 1 005 651 A   US 2002/063238 A1   JP 03 28 4347 A

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