Oxygen scavenging polyester composition

An oxygen scavenging composition comprising:

• A) a polyester polymer product comprising at least partially cobalt-neutralized organic sulphonic acid component and having ether content less than 8 mole %;
• B) optionally a polyester component comprising (i) at least one member selected from the group of dicarboxylic acids comprising terephthalic acid, isophthalic acid, succinic acid, glutaric acid, adipic acid, sebacic acid, naphthalene dicarboxylic acid and cyclohexane dicarboxylic acid or anhydrides or diesters or monoesters thereof with a lower alcohol;
• and (ii) at least one member selected from the group of diols comprising ethylene glycol, propylene glycol, 1,3-propanediol, 1,4-butanediol, 1,6-hexane diol, 8-octanediol, 1,10 decanediol, 2,2-dimethyl-1,3-propanediol, 1,4-cyclohexane dimethanol, 1,4-cyclohexanediol, cyclobutanediol, cyclobutane dimethanol, tetramethane cyclobutanediol and their ester forming derivatives;
• and
• C) an organic oxidizable polymeric component selected from the group consisting of:
• (i) a copolymer of m-xylenediamine and adipic acid (MXD6);
• (ii) an aliphatic poly-amide comprising repeating units of the general formula CO(CH2)nCONH(CH2)mNH— or (CH2)pCONH—, wherein any of n, m or p is an integer between 3 and 7;
• and
• (iii) a co-polyester, derived from hydroxyl- or carboxyl-terminated monomeric, oligomeric or polymeric olefin or olefin oxide segments capable of oxygen scavenging, constituted by at least one member selected from the group consisting of a dicarboxylic, hydroxy-carboxylic or dihydroxy compound comprising at least one olefinic unsaturation,
• wherein the organic sulphonic acid is selected from the group consisting of sulfophthalic acid, dialkyl sulphopthalate, sulfoterephthalic acid, dialkyl sulfoterephthalate, sulfoisophthalic acid, dialkyl sulfoisophthalate, 4-sulfonaphthalene-2,7-dicarboxylic acid, dialkyl 4-sulfonaphthalene-2,7-dicarboxylate and organic sulfonic acids represented by the formula R—SO3H, wherein R is an alkyl, substituted alkyl, aryl or substituted aryl moiety.