Patent ID: 8063124
Filing Date: 2011-11-22
Classification: C08K

Abstract:
1. A process for thermally treating an article, which is a preform, wherein the process comprises grinding the preform and heating the ground preform to a temperature above 70° C. for more than 2 minutes in the presence of oxygen, wherein the article comprises an oxidizable phosphorus compound and an ionomeric polyester derived from at least one ionomeric monomer, wherein at least 90% of the acid units of the ionomeric polyester are derived from the group consisting of terephthalic acid, isophthalic acid, orthophthalic acid, 2,6 naphthalene dicarboxylic acid and their respective dimethyl esters, wherein the composition has a total amount of polyester which is the amount of ionomeric polyester plus the amount of non-ionomeric polyester, if present, and the ionomeric polyester has been catalyzed with an antimony compound, wherein elemental antimony reduced by the oxidizable phosphorus compound is less than 5 ppm of the total amount of polyester.