Method of dyeing aromatic polyamide fibers with water-soluble dy

Bleaching and dyeing; fluid treatment and chemical modification – Drawing or stretching of preform with dyeing – process or...

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8491, 8494, 8497, 8654, 8657, 8925, D06P 700, C09B 4400

Patent

active

052324613

ABSTRACT:
Poly(p-phenylene terephthalamide) (PPD-T) fibers which have been dried are dyed with cationic dyes, or with disperse or acid dyes, by heating the fibers under a high pressure from 29 to 108 psi and at a temperature from 130.degree. to 180.degree. C.

REFERENCES:
patent: 2747233 (1956-05-01), Hitt
patent: 3767756 (1973-10-01), Blades
patent: 3869429 (1975-03-01), Blades
patent: 4144023 (1979-03-01), Provost
patent: 4985046 (1991-01-01), Hartzler
patent: 4994323 (1991-02-01), Lee
patent: 5096459 (1992-03-01), Ghorashi

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