The novel polyester of the present invention is capable of forming a highly tractable anisotropic melt phase. Such polyester includes a relatively low concentration of 6-oxy-2-naphthoyl moiety in combination with a more substantial concentration of 4-oxybenzoyl moiety. Other key moieties present are 2,6-dioxynaphthalene moiety and a terephthaloyl moiety. The polyester can be formed via a melt polymerization procedure to achieve a relatively high degree of polymerization in view of its relatively low melt viscosity. The polyester upon melt extrusion forms quality high performance fibers, films, and three-dimensional shaped articles. The resulting product also well retains desirable mechanical properties at elevated temperatures.
本发明的新型聚酯能够形成高度可控的各向异性熔相。这种聚酯包括相对较低浓度的 6-氧-2-
萘甲酰基和较高浓度的 4-氧苯甲酰基。其他关键分子包括 2,6-二氧代
萘分子和对苯二甲酰基。鉴于聚酯的熔体粘度相对较低,因此可通过熔融聚合程序形成聚酯,以达到相对较高的聚合度。这种聚酯经熔融挤压后可形成优质的高性能纤维、薄膜和三维形状的物品。所得产品在高温下也能保持理想的机械性能。