Acrylic fiber conversion utilizing a stabilization treatment con

Details Acrylic fiber conversion utilizing a stabilization treatment con Acrylic fiber conversion utilizing a stabilization treatment con

1968-09-18

1976-06-08

Meros, Edward J.

Bleaching and dyeing; fluid treatment and chemical modification

Chemical modification of textiles or fibers or products thereof

423447, D06M 326, C01B 3107

Patent

active

039618889

ABSTRACT:
A process is provided for the stabilization of a fibrous material composed of an acrylic polymer, e.g. an acrylonitrile homopolymer or a closely related copolymer. The fibrous material is subjected to a multiple stage stabilization treatment in which the initial stage is conducted in an essentially inert atmosphere, and a subsequent stage in an atmosphere containing an appreciable quantity of oxygen. The initial treatment which is conducted in a relatively inert atmosphere is believed to result in an improved cyclized molecular structure without encountering excessive chain cleavage, and is followed by an oxygen cross-linking reaction. The stabilized product exhibits improved physical properties. Carbonized or carbonized and graphitized fibrous materials may be formed upon heating the stabilized product in an inert atmosphere.

REFERENCES:
patent: 3285696 (1966-11-01), Tsunoda
patent: 3412062 (1968-11-01), Johnson et al.
patent: 3533743 (1970-10-01), Prescott et al.
patent: 3539295 (1970-11-01), Ram
patent: 3552923 (1971-01-01), Carpenter et al.
Vosburgh, "Textile Research Journal", vol. 30, 1960, pp. 882-896.

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