| 摘要 |
PURPOSE: A polyester resin composition and its preparing process are provided, which is biodegradable and has excellent mechanical properties. CONSTITUTION: A preparation process of polyester resin composition is composed of following steps: Reacting dicarboxylic acid which contains adipate with monomer which has aliphatic glycol as main component, being selected from at least one of 1,4-butanediol and ethyleneglycol. Above reaction is selected from at least one of condensation, esterification, and ester exchange. Final product after poly condensation of the composition has 30,000-70,000 of number average molecular weight, 160,000-600,000 of average molecular weight, 0.1-50 of melting point viscosity, and melts at 45-60°C. |
