A novel wholly aromatic polyester is provided which exhibits an anisotropic melt phase and which is capable of readily undergoing melt processing. The polyester of the present invention comprises the recurring units (a) paraoxybenzoyl moiety, (b) bromo-substituted-para-oxybenzoyl moiety, and (c) meta-oxybenzoyl moiety. The resulting polymer may be economically produced. Additionally, it may be melt processed at an advantageous temperature which makes possible the utilization of standard equipment such as that heretofore utilized for the melt-processing of polyethylene terephthalate.
本发明提供了一种新型全芳香族聚酯,该聚酯表现出各向异性的熔融相,且易于进行熔融加工。本发明的聚酯由循环单元 (a) 对氧苯甲酰基、(b)
溴代对氧苯甲酰基和 (c) 偏氧苯甲酰基组成。由此产生的聚合物可以经济地生产。此外,它可以在一个有利的温度下进行熔融加工,从而可以使用标准设备,如以前用于熔融加工聚
对苯二甲酸乙二醇酯的设备。