A novel polyester is provided which has been found to exhibit an optically anisotropic melt phase which enables it readily to undergo melt processing to form quality moulded articles possessing unusually high impact properties, etc. The polyester of the present invention contains recurring 6-oxy-2-naphthoyl, 4-oxybenzoyl and 1,4-dicarboxycyclohexane moieties in addition to a moiety derived from an aromatic diol in the proportions indicated. The hydrogen atoms present upon the aromatic rings optionally may be at least partially substituted (as described). The polyester is capable of forming the desired anisotropic melt at a temperature below approximately 350°C., and in a particularly preferred embodiment at a temperature below approximately 320°C.
本发明提供了一种新型聚酯,该聚酯具有光学各向异性熔融相,使其能够很容易地进行熔融加工,以形成具有非同寻常的高冲击性能等的优质模塑制品。 本发明的聚酯除了含有一个由芳香族二元醇衍生的分子外,还含有重复出现的 6-氧-2-
萘甲酰基、4-氧-苯甲酰基和 1,4-二羧基
环己烷分子,其比例如图所示。 芳香环上的氢原子可选择至少部分取代(如所述)。 该聚酯能够在低于约 350°C 的温度下形成所需的各向异性熔体,在一个特别优选的实施方案中,其温度低于约 320°C。