POLY(ESTER-AMIDE) CAPABLE OF FORMING AN ANISOTROPIC MELT PHASE DERIVED FROM 6-HYDROXY-2-NAPHTHOIC ACID, DICARBOXYLIC ACID AND AROMATIC MONOMER CAPABLE OF FORMING AN AMIDE LINKAGE

摘要

A melt processable poly(ester-amide) which is capable of forming an anisotropic melt phase is provided. The poly(ester-amide) of the present invention consists essentially of the recurring units (a) 6-oxy-2-naphthoyl moiety, (b) aryl dicarboxyl moiety or trans-1,4-dicarboxycyclohexane moiety, (c) an aromatic moiety capable of forming an amide linkage in the polymer, and (d) optionally, dioxyaryl moiety in the proportions indicated. Preferably, the aromatic moiety capable of forming an amide linkage is p-aminophenol or p-phenylenediamine. The resulting poly(ester-amide) exhibits a melting temperature below approximately 400 DEG C., preferably below approximately 350 DEG C. The poly(ester-amide) of the present invention is preferably formed by a melt polymerization technique.