A film comprising at least one layer, the layer comprising an oxygen scavenger composition comprising a condensation polymer and an oxygen scavenging catalytic amount of 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, C1, C2, C3, C4 each independently represents hydrogen or a CqH2q+1 hydrocarbyl group with q being an integer of from 0 to 20, provided that either A or B and at least one of C1, C2, C3, C4 are hydrogen atoms and each carbon atom of the alicyclic ring is fully substituted by hydrogen, hydrocarbyl, X and/or Y group(s) or mixtures thereof to fill its valence state;
- X and Y each independently represents —(CH2)n—C═O)-D with n being an integer in the range from 0 to 20 and D being selected from a halide atom or an OR group wherein R is hydrogen atom or a C1–C12 alkyl group, or X and Y together represent —(CH2)n—C═O)x-D with x being 2, n being an integer in the range from 0 to 20 and D is oxygen atom;
- and
- Z representing a —(CtH2t)-hydrocarbylene group with t being an integer in the range from 1–4;
- (B) at least one or a mixture of difunctional hydrocarbon compounds according to the following representation:
- G-R′-G
- wherein
- R′ represents a C5 or greater hydrocarbon group selected from alkylene, cycloalkylene or arylene group, and
- each G represents a hydroxyl or an amino group;
- (C) from 300 to 15,000 parts per million based on the total of (A), (B), (C) and (D) of at least one or a mixture of polyfunctional hydrocarbon compounds according to the following representation:
- J-R″(-J)z
- wherein
- R″ represents a C2–C20 hydrocarbon group selected from alkylene, cycloalkylene, arylene, alkarylene or aralkylene groups or mixtures thereof;
- J represents a functional group selected from —OH, —NH2, —N═C═O and —(CH2)n—C═O)-D with n being an integer in the range from 0 to 20 and D being selected from a halide atom or an OR′″ group, wherein R′″ is an —H, or C1–C12 alkyl group, or two J groups together represents —(CH2)n—C═O)x-D with n being an integer of from 0 to 20, D being an oxygen atom and x being 2;
- z is an integer of from 2 to 5;
- and
- (D) from 1 to 20 mole percent of the total of (A), (B), (C) and (D) of at least one or a mixture of monomer compounds selected from isophthalic acid, terephthalic acid, tetrahydroisophthalic acid, tetrahydroterephthalic acid, hydrogenated isophthalic acid, hydrogenated terephthalic acid, C1–C12 alkyl esters thereof, anhydride derivatives thereof, and hydrocarbyl derivatives thereof and lower C1–C5 glycol ester derivatives thereof;
- said X and Y of (A), G of (B) J of (C) and functional groups of (D) are in amounts that provide a molar ratio of carboxylic acid, acid ester, acid halide and isocyano groups to hydroxyl and amino groups of from 0.9 to 1.1:1.