Anisotropic melt phase forming poly(ester-carbonate) derived fro

Details Anisotropic melt phase forming poly(ester-carbonate) derived fro Anisotropic melt phase forming poly(ester-carbonate) derived fro

1981-11-06

1983-02-01

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...

524603, 524604, 524605, 528190, C08G 6364

Patent

active

043716601

ABSTRACT:
A melt processable poly(ester-carbonate) which is capable of forming an anisotropic melt phase is provided. The poly(ester-carbonate) of the present invention consists essentially of the recurring units (a) 6-oxy-2-naphthoyl moiety, (b) dioxyaryl moiety, (c) carbonyl moiety (i.e., carbonate moiety), and, optionally, (d) other aromatic moiety derived from aromatic hydroxyacid and (e) carbocyclic dicarboxyl moiety in the proportions indicated. Preferably, the dioxyaryl moiety is derived from hydroquinone, the carbonic acid moiety which is derived from a diarylcarbonate (e.g., diphenyl carbonate), and the additional aromatic moiety which is derived from an aromatic hydroxyacid is derived from hydroxybenzoic acid. The resulting poly(ester-carbonate) exhibits a melting temperature below approximately 400.degree. C., preferably below approximately 350.degree. C. The poly(ester-carbonate) of the present invention is preferably formed by a melt polymerization technique.

REFERENCES:
patent: 4284757 (1981-08-01), Fayolle
patent: 4310652 (1982-01-01), DeBona et al.
patent: 4330457 (1982-05-01), East et al.

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