Anisotropic wholly aromatic polyester derived from 4-...

Details Anisotropic wholly aromatic polyester derived from 4-... Anisotropic wholly aromatic polyester derived from 4-...

C - Chemistry, Metallurgy

08

G

402/187, 402/314

C08G 63/68 (2006.01) C08G 63/60 (2006.01) C08G 63/685 (2006.01) C08G 73/00 (2006.01)

Patent

CA 1148695

Abstract of the Disclosure A wholly aromatic polyester capable of forming an anisotropic melt is prepared which is derived from 4-hydroxy- 4'-carboxy azobenzene or its halogen, lower alkyl or lower alkoxy derivatives. Additional aryl moieties, such as those derived from aromatic hydroxy acids (e.g., p-hyroxybenzoic acid, 6-hydroxy-2-napthoic acid), or an aromatic diol (e.g., hydroquinone) in combination with an aromatic diacid (e.g., terephthalic acid), may be included with the moiety derived from 4-hydroxy-4'-carboxy azobenzene. The polyester is preferably prepared by the melt polymerization of the esteri- fied (e.g., acetylated) monomer or monomers (as described). The polyester may be melt processed into fibers, films or other shaped articles which may include conventional filler materials and/or reinforcing agents.

367369

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