Processes for preparing thermostable fibers and filaments

Details Processes for preparing thermostable fibers and filaments Processes for preparing thermostable fibers and filaments

1983-03-07

1985-06-18

Czaja, Donald

Plastic and nonmetallic article shaping or treating: processes

Forming continuous or indefinite length work

Shaping by extrusion

81156, 811568, 428253, 264184, 264206, 2642105, D01F 618, D01F 600

Patent

active

045240418

ABSTRACT:
The invention relates to continuous processes for preparing dimethylformamide-insoluble acrylic filaments and fibers which incur a weight loss of at most 20, preferably 15% on being heated up to 400.degree. C., by spinning appropriate polymer solutions, treating the filament bundles obtained before the first drying or heating stage in a continuous manner with an aqueous solution containing copper(I) ions, thermally fixing the copper content, and heating the bundles to 200.degree. to 350.degree. C.

REFERENCES:
patent: 3242000 (1966-03-01), Lynch
patent: 3273956 (1966-09-01), Fujita et al.
patent: 3281261 (1966-10-01), Lynch
patent: 3406145 (1968-10-01), Hennes
patent: 3468841 (1969-09-01), Caubiere et al.
patent: 3681004 (1972-08-01), Torrance
patent: 3733386 (1973-05-01), Shimoda et al.
patent: 3917776 (1975-11-01), Sato et al.
patent: 4267233 (1981-05-01), Tanaka et al.
patent: 4378226 (1983-03-01), Tomibe et al.

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