Process for spinning modacrylic fiber having high retraction and

Details Process for spinning modacrylic fiber having high retraction and Process for spinning modacrylic fiber having high retraction and

1978-05-09

1980-10-07

Woo, Jay H.

Plastic and nonmetallic article shaping or treating: processes

Forming continuous or indefinite length work

Shaping by extrusion

2642107, 525201, 525212, 525230, 526187, 526240, D01F 618

Patent

active

042268249

ABSTRACT:
Modacrylic fibers having high retraction, reduced inflammability and high glossiness, prepared by wet spinning a solution, in an organic spinning solvent miscible with water, of a mixture of copolymers from acrylonitrile, vinylidene chloride, at least a vinyl ester and at least an unsaturated monomer containing at least a sulphonic group, the acrylonitrile units being from 50% to 85% by weight and the vinyl ester units from 3% to 6% by weight; hot drawing the coagulated fiber in a mixture of water and spinning solvent; drying the fiber in hot air while leaving it free concurrently to contract; and subsequently further hot drawing it in air.

REFERENCES:
patent: 3052512 (1962-09-01), Kocay et al.
patent: 3384694 (1968-05-01), Nakayama et al.
patent: 3404204 (1968-10-01), Nakagawa et al.

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