| 摘要 |
PURPOSE:To provide a fluorine-containing copolymerized aromatic polyester composed of two specific kinds of constituent units, melt-moldable at <=400 deg.C and having excellent flame-retardancy, chemical resistance, abrasion resistance, mold fluidity and mechanical characteristics. CONSTITUTION:4-Hydroxy-2,3,5,6-tetrafluorobenzoic acid is copolymerized with a specific monomer to obtain the objective fluorine-containing copolymerized aromatic polyester composed of 95-5mol.% (preferably 90-10mol.%) constituent unit of formula I and 5-95mol.% (preferably 10-90mol.%) constituent unit of formula II.
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