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

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) aromatic moiety capable of forming an amide linkage in the polymer, and, optionally, (c) other aromatic moiety derived from aromatic hydroxyacid, in the proportions indicated. The aromatic moiety capable of forming an amide linkage in the polymer is an amino derivative or a substituted amino derivative of an aromatic carboxylic acid. Preferably, the aromatic moiety capable of forming an amide linkage is derived from p-aminobenzoic acid. The resulting poly(ester-amide) exhibits a melting temperature below approximately 400.degree.C., preferably below approximately 350.degree.C. The poly(ester-amide) of the present invention is preferably formed by a melt polymerization technique.