Poly-p-phenylene-terephthalamide fibers excellent in fatigue res

Details Poly-p-phenylene-terephthalamide fibers excellent in fatigue res Poly-p-phenylene-terephthalamide fibers excellent in fatigue res

1980-03-11

1983-02-22

Anderson, Harold D.

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

Synthetic resins

From carboxylic acid or derivative thereof

264184, 528481, 528499, C08G 6946

Patent

active

043749771

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: 3227793 (1966-01-01), Cipriani
patent: 3689430 (1972-09-01), Yates
patent: 3767756 (1973-10-01), Blades
patent: 3817941 (1974-06-01), Bair et al.
patent: 3819587 (1974-06-01), Kwolek
patent: 3869429 (1975-03-01), Blades
patent: 3869430 (1975-03-01), Blades
patent: 4016236 (1977-04-01), Nagasawa et al.
English Translation of claims 1-3, Japanese Patent Application 143724/1976.
English Translation of claims 1-4, Japanese Patent Application 37473/1978.

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