Aromatic polyester carbonate from diphenol mixture

Details Aromatic polyester carbonate from diphenol mixture Aromatic polyester carbonate from diphenol mixture

1989-07-19

1991-04-09

Anderson, Harold D.

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

528125, 528176, 528191, 528193, 528202, C08G 6364

Patent

active

050066315

ABSTRACT:
An aromatic polyester carbonate comprising structural units represented by the following formulae (A), (B), (C), and (D) and satisfying the following relationship when the mole fractions of the structural units represented by the formulae (A), (B), (C), and (D) are defined as a, b, c, and d, respectively: ##EQU1## and having an inherent viscosity [.eta..sub.inh ] in a solution at a concentration of 0.5 g/dl in p-chlorophenol as a solvent at 50.degree. C. of 1.0 dl/g or higher, or being insoluble in the solvent, and having liquid crystal properties ##STR1## wherein R is the same or different and represent an alkyl, phenyl group or a halogen, and n represents an integer of 0 to 4; ##STR2## X.sup.1 represents a substituted or non-substituted phenyl group, an alkyl group having 3 to 6 carbon atoms or a halogen;

REFERENCES:
patent: 3169121 (1965-02-01), Goldberg
patent: 3553167 (1971-01-01), Schnell et al.
patent: 4579934 (1986-04-01), Brinkmeyer et al.
EP-A-303,931 (Abstract) 2.89.
EP-A-303,935 (Abstract) 2.89.

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