Anisotropic dopes of aromatic polyamides

Details Anisotropic dopes of aromatic polyamides Anisotropic dopes of aromatic polyamides

C - Chemistry, Metallurgy

08

L

400/7826

C08L 77/10 (2006.01) C08G 69/12 (2006.01) C08G 69/32 (2006.01)

Patent

CA 1045736

ABSTRACT OF THE DISCLOSURE An optically anisotropic aromatic polyamide dope, which is useful for the formation of fibers, filaments, films and other shaped articles showing good properties of, for example, high tensile strength, high Young's modulus, and superior heat resistance, etc., and at the same time, shows superior stability in a high concentration, the dope comprising more than 10% by weight of an aromatic polyamide and a solvent for the polyamide, said polyamide consisting essentially of at least 5 mole% but less than 35 mole%, based on its entire units, of an only partially p-oriented structural unit expressed by the following formula (1) Image (1) wherein Ar1 is a divalent aromatic ring whose chain-extending bonds are coaxial or parallel, X is a member selected from the group consisting of 0, S and NH, and the NH group bonded to the benzene ring of the above benzoxazole, benzothiazole or benzimidazole ring is meta or para to the carbon atom of said benzene ring.

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