Process for dyeing spandex fibers

Details Process for dyeing spandex fibers Process for dyeing spandex fibers

1992-10-07

1995-01-17

Lieberman, Paul

Bleaching and dyeing; fluid treatment and chemical modification

Dye or potential dye composition, additive, treatment,...

Azo, acridone, or quinone dye

8926, 8598, C09B 4500

Patent

active

053822641

ABSTRACT:
A process for dyeing spandex. The process includes the steps of setting the dyebath with an organic acid; adding a pre-metallized acid dye to the dyebath; heating the dyebath until completion of dyeing; and cooling the dyebath. In the preferred embodiment the organic acid is selected from the group including formic and acetic acid. Also, in the preferred embodiment, the dyebath is heated at a rate of between about 0.5 F. and 3 F. per minute up to a temperature of between about 220 F. and 250 F. The resulting dyed spandex passes an AATCC IIA wash test.

REFERENCES:
patent: 3653798 (1972-04-01), Boardman
patent: 3888913 (1975-06-01), Baumann et al.
patent: 4166889 (1979-09-01), Fujii et al.
patent: 4655785 (1987-04-01), Reinert et al.
"Dyeing and Finishing Fabrics Containing Lycra" Bulletin L-57, E. I. Dupont de Nemours & Co Mar. 1968, pp. 9-24.

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