Patent ID: 6872451

Claim:
A film comprising at least one layer, the layer comprising an oxygen scavenger composition comprising a condensation polymer and a transition metal salt, compound or complex, wherein said polymer comprises mer units derived from (A) at least one or a mixture of substituted alicyclic compounds having non-aromatic, ethylenic functionality according to the following representation: wherein A, B, C 1 , C 2 , C 3 , C 4 each independently represents hydrogen or a C q H 2q+1 hydrocarbyl group with q being an integer in the range of from 0 to 20, provided that either A or B and at least one of C 1 , C 2 , C 3 , C 4 are hydrogen atoms and each carbon atom of the alicyclic ring is fully substituted by groups selected from hydrogen, hydrocarbyl X or Y groups or mixtures thereof to fill its valence state; X and Y each independently or together represents functional groups that is capable of being part of a heteroatom containing linkage forming a covalent bond linkage between the cycloalkenyl containing group and other monomeric groups forming the condensation polymer; and Z being selected from a —(C t H 2t )— hydrocarbylene group with t being an integer in the range from 1-4; (B) at least one or a mixture of substituted non-aromatic or aromatic hydrocarbyl compounds having ionomeric functionality according to the following representation: wherein R represents a non-aromatic or aromatic hydrocarbon group; each F independently or two F groups together represent a functional group capable of being part of a heteroatam containing linkage between the hydrocarbon group R and other monomeric groups forming the condensation polymer; E represents an anionic group selected from sulfonyl or carboxyl group; M represents a cationic alkali metal ion or cationic alkaline earth metal ion; and “a” represents an integer having the value equal to the numerical value of the valence of M; and (C) at least one or a mixture of di- or polyfunctional hydrocarbon compounds according to the following representation: G-R′(-G) x wherein R′ represents a non-aromatic or aromatic hydrocarbon group; and each G independently represents a functional group capable of being part of a heteroatom containing linkage between the hydrocarbon group R′ and the other monomeric groups forming the condensation polymer, and x is at least 1.