COMPOSITIONS FOR SCAVENGING OXYGEN

摘要

The present invention provides a method of scavenging oxygen (particularly ground state oxygen) in an atmosphere or liquid comprising the steps of: (i) providing a polymeric composition comprising an hydrogenated anthraquinone derivative comprising a quinonoid sub structure wherein the hydrogenated anthraquinone derivative is selected from compounds represented by the formula (I) defined herein and substituted derivatives thereof: wherein at least two of the carbon atoms at positions 1 to 8 are hydrogenated and each remaining non hydrogenated carbon atom at positions 1 to 8 is included in an unsaturated bond to an adjacent non hydrogenated carbon atom at positions 1 to 8; and (ii) exposing the atmosphere or liquid to the composition; such that at least a portion of the oxygen in the atmosphere or liquid is removed by reaction with the composition. Methods of preventing transmission of oxygen across a film or packaging material using the polymeric composition of the invention are also provided. Further provided is a polymeric composition comprising an hydrogenated anthraquinone derivative comprising a quinonoid sub structure.