Thermotropic polyesters of 2,6-dihydroxyanthraquinone

Details Thermotropic polyesters of 2,6-dihydroxyanthraquinone Thermotropic polyesters of 2,6-dihydroxyanthraquinone

C - Chemistry, Metallurgy

08

G

402/190, 402/202

C08G 63/60 (2006.01) C08G 63/68 (2006.01) C08G 63/688 (2006.01) D01F 6/84 (2006.01)

Patent

CA 1131847

ABSTRACT OF THE DISCLOSURE A thermotropic wholly aromatic polyester is provided which is cap- able of forming an anisotropic melt phase. This novel polyester displays surprising tractability and may be used as a molding resin or may be melt spun into fibers. The aromatic polyester of the present invention consists essentially of the recurring units (a) 2,6-dioxyanthraquinone moiety, (b) 4-oxybenzoyl moiety, and (c) aromatic diacid moiety. The resulting poly- ester exhibits a melting point below approximately 375°C, and preferably be- low approximately 350°C. Fibers which are melt spun from the polyester ex- hibit unexpectedly good thermal stability. The desirable tractability prop- perties of the polyester are attributed to its anisotropic melt phase, which is due to the inclusion of the 2,6-dioxyanthraquinone moiety in the polymer.

344929

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