Additive for polyester base synthetic resin containing plasticizer and plasticizer for biodegradable resin

摘要

An additive to a polyester base synthetic resin containing a plasticizer that contains at least one compound selected from hydroxy aliphatic monocarboxylic acid ester and carboxylic acid amide is provided. In addition, a polyester base synthetic resin composition containing a polyester-base synthetic resin, a plasticizer, and at least one compound selected from hydroxy aliphatic monocarboxylic acid ester and carboxylic acid amide are also provided. Further, a plasticizer for biodegradable resins that can impart flexibility without disturbing the transparency of the biodegradable resins is provided. A biodegradable composition contains the plasticizer.