Process for dyeing cellulosic textiles with indigo

Details Process for dyeing cellulosic textiles with indigo Process for dyeing cellulosic textiles with indigo

1978-03-03

1979-09-04

Marquis, Melvyn I.

Bleaching and dyeing; fluid treatment and chemical modification

Treatment of hides, skins, feathers and animal tissues

Tanning

8 35, C09B 700, C09B 702, C09B 904, D06P 122

Patent

active

041667174

ABSTRACT:
The specification describes an improved process for dyeing cellulosic textiles with indigo which comprises reducing indigo dye to its soluble leuco form, incorporating an aldehyde addition product to the reduced indigo dye solution, immersing a cellulosic textile, and exposing the textile to air to oxidize the dye to its insoluble color. The specification describes also the reducing agent, the aldehyde addition product and the conditions required for optimum dyeing.

REFERENCES:
patent: 1535151 (1925-04-01), Eustis
patent: 2233101 (1941-02-01), Kern
patent: 3083068 (1963-03-01), Weber et al.
patent: 3645665 (1972-02-01), Etters
patent: 3804944 (1974-04-01), Kise et al.
Etters, J. N., Textile Chemist and Colorist, Mar. 1972, pp. 83-88.

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