Patent ID: 6936204
Filing Date: 2005-08-30
Classification: C08K

Abstract:
1. A method for making a molded article with decreased levels of acetaldehyde, comprising: (a) providing a thermoplastic molding composition comprising (i) a polymer component selected from the group consisting of polyethylene terephthalate, a copolyester of polyethylene terephthalate, and a combination of polyethylene terephthalate and a copolyester of polyethylene terephthalate; and (ii) a polymer additive comprising one or more than one hydroxylic compound comprising from 3 to about 8 hydroxy groups; and (b) injection molding the thermoplastic molding composition to form a molded article; where the amount of one or more than one hydroxylic compound is present in an amount from about 0.0001% to about 2% by weight of the polymer component, and the amount is sufficient to decrease the level of acetaldehyde in the molded article that would otherwise result without including the one or more than one hydroxylic compound in the thermoplastic molding composition.