Method of producing thermotropic liquid crystalline polyester

摘要

A thermotropic liquid crystalline polyester is produced by carrying out polycondensation of ester monomer (I-2), an aromatic dicarboxylic acid (II) and an aromatic carboxylic acid (III-2). The amounts of the compounds (I-2) and (II) are substantially equivalent and the amount of the compound (III-2) is not more than 20 times that of (I-2) by mole. A thermotropic liquid crystalline polyester having good heat resistance, fluidity and uniformity can be produced.