An aromatic polyester consisting essentially of p-oxybenzoyl units or the 3-methyl or 3-chloro-derivates thereof, 4,4'-dioxybenzophenone units or the 3-methyl- or 3-chloro- derivatives thereof, terephthaloyl units and optionally 1,4-dioxyphenylene units.
                            一种芳香族聚酯,主要由对氧苯甲酰基单元或其 3-甲基或 3-
氯衍
生物、4,4'-二氧
二苯甲酮单元或其 3-甲基或 3-
氯衍
生物、对苯二甲酰基单元以及可选的 1,4-二氧苯基单元组成。