Process for melt-spinning acrylonitrile polymer fiber

Details Process for melt-spinning acrylonitrile polymer fiber Process for melt-spinning acrylonitrile polymer fiber

1978-04-12

1980-05-27

Woo, Jay H.

Plastic and nonmetallic article shaping or treating: processes

Forming continuous or indefinite length work

Shaping by extrusion

2642106, 2642107, 2642108, 264211, D01F 618

Patent

active

042050391

ABSTRACT:
Spinning of a melt of water and an acrylonitrile polymer containing hydrophobic moieties through a spinnerette into a steam-pressurized solidification zone results in improved fiber when the amount of water in the melt is in the lower half of the range necessary to provide the melt under the conditions of extrusion, the amount of hydrophilic moieties contained in the polymer are sufficient to control the rate of release of water from the extrudate, the steam conditions in the solidification are sufficient to prevent formation of a separate water phase, and drying of the resulting extrudate under conditions of temperature and humidity to remove water therefrom while avoiding formation of a separate water phase.

REFERENCES:
patent: 2585444 (1952-02-01), Coxe
patent: 3873508 (1975-03-01), Turner
patent: 3896204 (1975-07-01), Goodman et al.
patent: 3984601 (1976-10-01), Blickenstaff
patent: 3991153 (1976-11-01), Klausner et al.

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