Copolyester plasticizers for polyvinyl chloride

摘要

Copolyester plasticizers useful for the formulation of PVC refrigerator gaskets which exhibit improved resistance to migration and marring and improved processing characteristics are provided. The copolyesters are obtained by reacting an acid component consisting of a mixture of a benzene dicarboxylic acid (or anhydride or methyl ester thereof) and an aliphatic C5-12 saturated dicarboxylic acid (or methyl ester) with an alcohol component consisting of a mixture of neopentyl glycol and ethylene glycol. An aliphatic C6-13 saturated monofunctional alcohol or aliphatic C6-13 saturated monocarboxylic acid terminating agent is also included in the reaction.