Liquid crystalline polyesters

Details Liquid crystalline polyesters Liquid crystalline polyesters

1994-01-18

1995-02-21

Acquah, Samuel A.

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

528176, 528191, 528194, 528219, 528272, 528302, 5283086, C08G 6318

Patent

active

053916883

ABSTRACT:
It is intended to provide a liquid crystalline polyester whose orientation in the state of liquid crystal can be easily immobilized as glass phase and which is suitable for application to optical elements.
A liquid crystalline polyester comprising repeating units a, b, c and d represented by the following general formulae: ##STR1## where X and Y are each independently a hydrogen atom, Cl, Br or an alkyl group having 1 to 4 carbon atoms, the repeating units a, b, c and d being in mole ratios such that (a+b)/(c+d) is approximately 1, a/b is in the range from 98/2 to 50/50 and c/d is in the range from 70/30 to 10/90.

REFERENCES:
patent: 4999416 (1991-03-01), Kaminade et al.

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