High strength polyacrylonitrile fiber and method of producing th

Details High strength polyacrylonitrile fiber and method of producing th High strength polyacrylonitrile fiber and method of producing th

1984-03-26

1985-08-13

Kendell, Lorraine T.

Stock material or miscellaneous articles

Coated or structually defined flake, particle, cell, strand,...

Rod, strand, filament or fiber

4234471, 428367, 2642107, D02G 300

Patent

active

045350272

ABSTRACT:
Polyacrylonitrile (PAN) fiber of high strength (tensile strength.gtoreq.20 g/d) produced from a polymer composed mainly of acrylonitrile (AN) and having a weight average molecular weight not less than 400,000, and a method of producing said fiber characterized by a multistage stretching step and a drying step under particular conditions.

REFERENCES:
patent: 3855382 (1974-12-01), Takeya et al.
patent: 4140844 (1979-02-01), Lohwasser
patent: 4421708 (1983-12-01), Reichardt
patent: 4446206 (1984-05-01), Fester et al.

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