Thermotropic aromatic copolyesters comprising recurring structur

Details Thermotropic aromatic copolyesters comprising recurring structur Thermotropic aromatic copolyesters comprising recurring structur

1990-10-24

1992-08-11

Anderson, Harold D.

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

528 86, 528176, 528193, 528271, C08G 6300, C08G 6700, C08G 6900

Patent

active

051380218

ABSTRACT:
Novel thermotropic aromatic copolyesters comprise the following recurring structural units: ##STR1## and are prepared by polycondensing p-(p-hydroxyphenoxy)-benzoic acid with an aromatic or cycloaliphatic diacid, a diphenol and, optionally, p-hydroxybenzoic acid.

REFERENCES:
patent: 4067852 (1978-01-01), Calundann
patent: 4161470 (1979-07-01), Calundann
patent: 4265802 (1981-05-01), Choe
patent: 4868271 (1989-09-01), Dahl et al.
Patent Abstracts of Japan, vol. 5, No. 4 (C-38) [676], Jan. 13, 1981.
Patent Abstracts of Japan, vol. 12, No. 344 (C-528) [3191], Sep. 16, 1988.

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