Process for the preparation of high Young's modulus poly-p-pheny

Details Process for the preparation of high Young's modulus poly-p-pheny Process for the preparation of high Young's modulus poly-p-pheny

1982-08-06

1984-04-03

Woo, Jay H.

Plastic and nonmetallic article shaping or treating: processes

Forming continuous or indefinite length work

Shaping by extrusion

264235, 264346, D01D 512

Patent

active

044407106

ABSTRACT:
A high Young's modulus poly-p-phenylene-terephthalamide fiber having a unique fine-structure and excellent properties, including excellent resistance to lateral stress and to friction. The fiber is made by extruding an anisotropic dope in a non-coagulating layer, passing the extrudate through a coagulating layer, washing and drying the resulting coagulated fibers in the absence of substantial tension, and heating the fibers under tension.

REFERENCES:
patent: 3671542 (1972-06-01), Kwoleck
patent: 3760054 (1973-09-01), Moulds
patent: 3767756 (1973-10-01), Blades
patent: 3819587 (1974-06-01), Kwoleck
patent: 3869430 (1975-03-01), Blades
patent: 4016236 (1977-04-01), Nagasawa et al.
patent: 4075269 (1978-02-01), Jones et al.

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