Thermotropic liquid crystalline polyesters from...

Details Thermotropic liquid crystalline polyesters from... Thermotropic liquid crystalline polyesters from...

C - Chemistry, Metallurgy

08

G

C08G 63/18 (2006.01) C08G 63/181 (2006.01) C08G 63/189 (2006.01) C08G 63/19 (2006.01) C08G 63/191 (2006.01) C08L 67/03 (2006.01)

Patent

CA 2053550

TITLE THERMOTROPIC LIQUID CRYSTALLINE POLYESTERS FROM 2-METHYLHYDROQUINONE ABSTRACT OF THE DISCLOSURE This invention relates to thermotropic liquid crystalline polyester compositions containing recurring units derived from 2-methylhydroquinone, terephthalic acid, 2,6-naphthalenecarboxylic acid, and hydroquinone, characterized as having a heat distortion temperature of greater than 200?C and improved elongation. The inclusion of a reinforcing/filling agent selected from the group consisting of glass reinforcing agents, glass fillers, carbon metasilicate, calcium carbonate, talc, titanium dioxide, and calcined aluminum silicate in said compositions, and also in those same compositions lacking recurring units of hydroquinone, results in an improvement in the elongation of said compositions. The inclusion of carbon fiber into these compositions results in no significant decrease in the elongation of said compositions. The compositions are useful as films, fibers, and shaped articles.

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