Process for manufacturing aromatic polymer fibers

Details Process for manufacturing aromatic polymer fibers Process for manufacturing aromatic polymer fibers

1975-05-12

1977-04-05

Woo, Jay H.

Plastic and nonmetallic article shaping or treating: processes

Forming continuous or indefinite length work

Shaping by extrusion

264168, 264210F, D01D 506

Patent

active

040162362

ABSTRACT:
A process for manufacturing fibers by a wet spinning procedure from an anisotropic dope of a polymer having aromatic mononucleus or polynucleus divalent radicals in which the chain extending bonds from each aromatic nucleus are coaxial or parallel and oppositely directed and which are connected by at least one link selected from --NHCO--, --NHCOCONH-- and --CONHNHCO-- is provided. The filaments taken out from a coagulation bath are, without applying any substantial tension thereto, washed with water, dried and optionally heat-treated, on a conveyor. The resulting fibers possess moderate initial modulus and elongation as well as high tenacity.

REFERENCES:
patent: 3154609 (1964-10-01), Cipriani
patent: 3767756 (1973-10-01), Blades

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