POLYESTER PLASTICIZER AND CHLORINE-CONTAINING RESIN COMPOSITIONS

摘要

A polyester plasticizer having an average molecular weight of 500 to 5000 which is obtained by the reaction of (a) a diol component comprising 100 molar parts of 2-methyl-1,3-propanediol, 10 to 1000 molar parts of 3-methyl-1,5-pentanediol, and 0 to 1000 molar parts of an additional aliphatic diol, (b) an organic dicarboxylic acid component comprising 100 molar parts of adipic acid and 0 to 100 molar parts of an additional organic dicarboxylic acid, and (c) a chain terminator comprising a monovalent aliphatic alcohol or a monovalent aliphatic organic acid. The polyester plasticizer exhibits high plasticization efficiency and imparts excellent oil resistance to synthetic resins such as chlorine-containing resins.