Process for spinning acrylic fibers

Details Process for spinning acrylic fibers Process for spinning acrylic fibers

1978-12-29

1980-12-09

Woo, Jay H.

Plastic and nonmetallic article shaping or treating: processes

Forming continuous or indefinite length work

Shaping by extrusion

264182, 264206, 264211, 525336, 525350, D01D 508

Patent

active

042384400

ABSTRACT:
Acrylonitrile polymers containing at least 91% by weight acrylonitrile are spun from solutions having a polymer concentration of 38 to 75% by weight. Useful polymers have an intrinsic viscosity of 0.6 to 2.0, most preferably 0.9 to 1.1, 7 to 23 .mu.eq./g. enolizable groups after mild acid treatment, 15 to 70 .mu.eq./g. thioether ends derived from a water insoluble mercaptan and less than 3 .mu.eq./g. oxidizable hydrolysis fragments.

REFERENCES:
patent: 2434054 (1948-01-01), Roedel
patent: 3380949 (1968-04-01), Isley et al.
patent: 3448092 (1969-06-01), Chiang
patent: 3819762 (1974-06-01), Howe
patent: 3828013 (1974-08-01), Nield
patent: 3879360 (1975-04-01), Patron et al.
patent: 3896204 (1975-07-01), Goodman et al.
patent: 4004072 (1977-01-01), Tamura
patent: 4028302 (1977-06-01), Tynan
Kirby et al., "Macromolecules", 1, pp. 53-58, (1968).

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