Process for spinning flame-resistant acrylonitrile polymer fiber

Details Process for spinning flame-resistant acrylonitrile polymer fiber Process for spinning flame-resistant acrylonitrile polymer fiber

1978-04-24

1979-10-02

Woo, Jay H.

Plastic and nonmetallic article shaping or treating: processes

Forming continuous or indefinite length work

Shaping by extrusion

264211, D01F 618

Patent

active

041698762

ABSTRACT:
An improved process for spinning flame-resistant acrylonitrile polymer fibers wherein 33-43% by weight (preferably 35-40% by weight) of a chlorinated acyclic hydrocarbon containing 60-73% (preferably 66-70%) by weight chlorine and 57-67% (preferably 60-65%) by weight of an acrylonitrile polymer having an intrinsic viscosity of 1.6-3 (preferably 1.8-2.2) is dissolved in a suitable solvent to form a solution containing 25-31% by weight solids which solution is extruded under conventional dry spinning conditions to give fibers which are extracted, drawn and dried. Optionally, the spinning solution also contains 0.5-6% (preferably about 3%) by weight antimony trioxide based on total solids.

REFERENCES:
patent: 4077929 (1978-03-01), Robinson

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