Process for the production of dyed acrylic fibres

Details Process for the production of dyed acrylic fibres Process for the production of dyed acrylic fibres

1975-12-11

1978-05-02

Woo, Jay H.

Plastic and nonmetallic article shaping or treating: processes

With incorporating dye susceptible material or dyeing workpiece

8 17, 8 31, 8177R, 260 4219, 264182, 264206, 264211, D01F 104

Patent

active

040874940

ABSTRACT:
This invention relates to a process for the production of dyed filaments or fibres of acrylonitrile polymers, wherein carbon black pigments are added to the polymer before the spinning process and the filament containing carbon black pigments are dyed. By this process it is possible to save considerable amounts of dye-stuff.

REFERENCES:
patent: RE23722 (1953-10-01), Pike
patent: 1975153 (1934-10-01), Jacquet
patent: 3468841 (1969-09-01), Corbiere et al.
patent: 3969559 (1976-07-01), Boe
patent: 3975482 (1976-08-01), Rulison

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