Process for producing a liquid crystalline polyester polymer of

Details Process for producing a liquid crystalline polyester polymer of Process for producing a liquid crystalline polyester polymer of

1988-03-18

1989-03-21

Anderson, Harold D.

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

528125, 528126, 528173, 528176, 528179, 528190, 528191, 528193, 528274, C08G 6330

Patent

active

048144177

ABSTRACT:
A process for directly producing liquid crystalline polymers from cyclohexanedicarboxylic acids and aromatic diols is provided. These raw materials can be converted into polyesters capable of finishing into fibers, films, etc., using the combination of thionyl chloride and pyridine as a condensing agent. In the present invention, aromatic oxycarboxylic acids can be used in combination in an optional proportion, in addition to the above two raw materials.

REFERENCES:
patent: 4286085 (1981-08-01), Jaquiss et al.
patent: 4482694 (1984-11-01), Freitag et al.
patent: 4647649 (1987-03-01), Higashi et al.
patent: 4720538 (1988-01-01), Bartmann

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