| 摘要 |
<p>An aromatic polyester comprising the repeating units (A), (B), (C) and (D) represented by the following formulae in amounts of 0 to 80 mole%, 10 to 50 mole%, 5 to 50 mole% and 0 to 30 mole%, respectively, having a logarithmic viscosity of 1.0 dl/g or more and capable of being melt-molded at a temperature of 350 DEG C or less: <CHEM> where R represents a C2-C6 alkylene, and &lsqbstr& O-Ar-O &rsqbstr& (D) where Ar represents a divalent aromatic residue, and a process for producing the same. The aromatic polyesters according to the present invention combine moldability and heat resistance in a good state and have mechanical properties of sufficient practical value. An aromatic polyester according to the present invention shows optical anisotropy at a molten state.</p> |
