Process for the printing with developing dyes

Details Process for the printing with developing dyes Process for the printing with developing dyes

1976-04-06

1977-11-08

Clingman, A. Lionel

Bleaching and dyeing; fluid treatment and chemical modification

Treatment of hides, skins, feathers and animal tissues

Tanning

8 44, 8 46, 8 542, 8 62, 8 70, 8 92, C09B 2700, C09B 4548, D06P 312

Patent

active

040573893

ABSTRACT:
Cellulosic material is printed with a paste containing the alkaline solution of a coupler, the dispersion of a diazotable aromatic amine, a nitrite and a thickener, and the dyestuff is developed on the fiber by adding solutions of organic acids and, after a short air passage, contacting the dyeing or print with an alkaline agent.

REFERENCES:
patent: 2597306 (1952-05-01), Eaton
patent: 3000298 (1961-09-01), Bryant
patent: 3494716 (1970-02-01), Hoffman
patent: 3787179 (1974-01-01), Lowenfeld
patent: 3961886 (1976-06-01), Hertel et al.

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