Process for producing acrylic fibers having non-circular cross-s

Details Process for producing acrylic fibers having non-circular cross-s Process for producing acrylic fibers having non-circular cross-s

1983-08-26

1985-04-09

Czaja, Donald

Plastic and nonmetallic article shaping or treating: processes

Forming continuous or indefinite length work

Shaping by extrusion

264182, 2642108, 264211, 2642893, D01D 506, D01F 618, D01F 1104

Patent

active

045101116

ABSTRACT:
The present invention provides an industrial process for producing acrylic fibers having non-circular cross-sections which are excellent in gloss, softness, etc. In this process, which is a wet-spinning method using an inorganic solvent, a particular acrylonitrile polymer solution is spun through a spinnerette having circular spinning orifices. The steps of spinning, coagulation, water-washing and wet-heat stretching are carried out in integral combination and under specific conditions.

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