| 摘要 |
PURPOSE:To produce a polyester having excellent heat stability, heat resistance, toughness, flexibility, and chemical resistance and providing a high strength molding, by polycondensing a specified compound. CONSTITUTION:A polyester having repeating units of formula II, being insoluble in an organic solvent while it is cold or hot and having a heat decomposition point >=300 deg.C is obtained by polycondensing a compound of formula I (wherein R is -CH2-, -CH2CH2-, or -CH=CH-, A is H or acyl, B is H, alkyl, or aryl) at 60 deg.C or above with the aid of a catalyst (e.g., triphenylphosphine) and a promotor (e.g., KI) in the presence (absence) of a solvent (e.g., pyridine).
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