Method of dyeing nylon fiber with acid dye: sullfamic acid

Details Method of dyeing nylon fiber with acid dye: sullfamic acid Method of dyeing nylon fiber with acid dye: sullfamic acid

1992-11-16

1994-11-15

Clingman, A. Lionel

Bleaching and dyeing; fluid treatment and chemical modification

Organic additive for dye composition, dye composition...

Sulfur-containing

8587, 8680, 8924, 562 37, C09B 6700

Patent

active

053644174

ABSTRACT:
A process for dyeing nylon with acid or premetallized acid dyes is provided wherein the dye bath is brought to a temperature of 160.degree.-230.degree. F. and a pH of 5.5-4.0, followed by the gradual addition of sulfamic acid to lower the pH to 3.75-2.25, thereby improving dye exhaustion.

REFERENCES:
patent: 2499787 (1950-03-01), Sharkey
patent: 4129416 (1978-12-01), Bennett et al.
patent: 4285691 (1981-09-01), Egli et al.
patent: 4411665 (1983-10-01), Egli et al.
patent: 4415331 (1983-11-01), Dusenbury et al.

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