| 摘要 |
PROBLEM TO BE SOLVED: To provide a thermoplastic resin with a sufficient molecular weight, which is started from biomass and is excellent in heat resistance, mechanical physical properties and weather resistance. SOLUTION: The method for producing a polyester resin including a furan structure represented by the structural formula (1) comprises performing ester exchange reaction of a furan dicarboxylic dialkyl ester component with a diol component, and then performing polycondensation reaction in the presence of a titanium compound. A high-molecular-weight polyester resin can be produced using, as raw material, 2,5-furan dicarboxylic acid ester which is producible from a biomass raw material, and an industrially useful material excellent in heat resistance and mechanical physical properties can be thus provided. COPYRIGHT: (C)2009,JPO&INPIT
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