Anisotropic melt phase forming poly(ester-amide) derived from p-

Details Anisotropic melt phase forming poly(ester-amide) derived from p- Anisotropic melt phase forming poly(ester-amide) derived from p-

1981-04-07

1982-10-19

Lee, Lester L.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

528183, 528184, 528185, 528210, 528211, 528288, 528339, 528344, C08G 6944

Patent

active

043551327

ABSTRACT:
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) p-oxybenzoyl moiety, (b) 2,6-dicarboxynaphthalene moiety, (c) aromatic moiety capable of forming an amide linkage in the polymer, and, optionally, (d) p-dioxyphenyl moiety and (e) other carbocyclic dicarboxyl moiety, in the proportions indicated. Preferably, the aromatic moiety capable of forming an amide linkage is derived from p-aminophenol or p-phenylenediamine. The carbocyclic dicarboxyl moiety is preferably aromatic. 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.

REFERENCES:
patent: 3859251 (1975-01-01), Kuhfuss et al.
patent: 4182842 (1980-01-01), Jackson et al.
patent: 4272625 (1981-06-01), McIntyre

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