Patent ID: 7014921
Filing Date: 2006-03-21
Classification: C08G,Y10T

Abstract:
1. An aromatic liquid-crystalline polyester comprising repeating units represented by the following formulae (I), (II), (III) and (IV): Ar 1 and Ar 2 independently representing 1,4-phenylene or 4,4′-biphenylene, and the amount of repeating unit (I) being in the range of from 40% by mole to 74.8% by mole; the amount of repeating unit (II) being in the range of from 12.5% by mole to 30% by mole; the amount of repeating unit (III) being in the range of from 12.5% by mole to 30% by mole; and the amount of repeating unit (IV) being in the range of from 0.2% by mole to 15% by mole, each molecular amount ratio being relative to the sum of the molecular amounts of repeating units (I) to (IV), wherein the molecular amounts of repeating units (III) and (IV) satisfy the relation of (III)/[(III)+(IV)]≧0.5.