Spin dopes from poly[2,2'-bis(trifluoromethyl)benzidine terephth

Details Spin dopes from poly[2,2'-bis(trifluoromethyl)benzidine terephth Spin dopes from poly[2,2'-bis(trifluoromethyl)benzidine terephth

1992-04-15

1993-06-15

Schofer, Joseph L.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

524211, 524233, C08K 534

Patent

active

052198987

ABSTRACT:
Anisotropic solutions are prepared from poly[2,2'-bis(trifluoromethyl)benzidine terephthalamide] or poly[2,2'-bis(1,1,2,2-tetrafluoroethoxy)benzidine terephthalamide] in amide solvents containing certain chlorides in specified amount. Crystalline fibers are prepared from the polymers.

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patent: 4595708 (1986-06-01), Sundet
patent: 4857569 (1989-08-01), Cotts et al.
patent: 4959453 (1990-09-01), Sweeny
patent: 5006593 (1991-04-01), Brasure et al.
J. Macromol. Sci.-Chem., A23 (7), pp. 905-914 (1986).
Journal of Polymer Science: Polymer Chemistry Edition, vol. 23, pp. 2669-2678 (1985).
Journal of Polymer Science: Part A: Polymer Chemistry, vol. 25, pp. 1249-1271 (1987).
Macromolecules 1985, vol. 18, pp. 1058-1068.

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