Process for the preparation of fibers of poly-p-phenylene-tereph

Details Process for the preparation of fibers of poly-p-phenylene-tereph Process for the preparation of fibers of poly-p-phenylene-tereph

1982-05-21

1983-12-06

Woo, Jay H.

Plastic and nonmetallic article shaping or treating: processes

Forming continuous or indefinite length work

Shaping by extrusion

264203, 264342RE, D01D 512

Patent

active

044193173

ABSTRACT:
A poly-p-phenylene-terephthalamide fiber with excellent fatigue resistance resulting from a unique combination of properties. The fibers are prepared by extruding an anisotropic polymer dope in a non-coagulating layer, passing the extrudate through a coagulating layer, depositing the resulting coagulated fibers on a net conveyor, and in the absence of substantial tension sequentially washing the fibers, holding the fibers in saturated steam, and drying the fibers under specified conditions.

REFERENCES:
patent: 3888821 (1975-06-01), Milford
patent: 3966686 (1976-06-01), Asakara et al.
patent: 4016236 (1977-04-01), Nagasawa et al.
patent: 4075269 (1978-02-01), Jones et al.

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