Thermotropic liquid crystalline polyester compositions

Details Thermotropic liquid crystalline polyester compositions Thermotropic liquid crystalline polyester compositions

1992-05-04

1993-10-05

Kight, III, John

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

528176, 528190, 528194, C08G 6300, C08G 6302

Patent

active

052506541

ABSTRACT:
This invention relates to thermotropic liquid crystalline polyester compositions containing recurring units derived from hydroquinone, 4,4'-dihydroxybiphenyl, terephthalic acid, 2,6-naphthalenedicarboxylic acid, 4,4'-bibenzoic acid, and 4-hydroxybenzoic acid which are characterized as having melting points less than 365.degree. C., breaking elongations greater than or equal to 1.5%, and heat distortion temperatures greater than 200.degree. C.
This invention further relates to the same compositions containing 20 to 40 weight percent of at least one glass reinforcing/filling agent and which are characterized as having melting points less than 365.degree. C., breaking elongations greater than or equal to 1.8%, and heat distortion temperatures greater than 230.degree. C.
The compositions are useful as films, fibers, and shaped or molded articles.

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Liquid Crystal Polymers. XI. Liquid Crystal Aromatic Polyesters: Early History And Future Trends by W. J. Jackson, Jr. (1989) pp. 23-49 Excerpted from Mol. Cryst. Liq. Cryst., 1989, vol. 169.

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