Process for the differential dyeing of polyamide fibers and of m

Details Process for the differential dyeing of polyamide fibers and of m Process for the differential dyeing of polyamide fibers and of m

1975-08-20

1976-12-07

Wong, Jr., Harry

Bleaching and dyeing; fluid treatment and chemical modification

Treatment of hides, skins, feathers and animal tissues

Tanning

8 41B, 260194, 260199, D06P 382, C09B 2930

Patent

active

039959937

ABSTRACT:
It had been found that the dyestuff of the formula ##STR1## is very suitable in a differential dyeing process for the dyeing of polyamide fiber materials at a pH of 2 to 9; the dyestuff possesses a very good differentiating behavior and migrating behavior yielding dyeings of a high degree of evenness while it does not dye accompanying non-polyamide fibers, not even in traces.

REFERENCES:
patent: 2999731 (1961-09-01), Harding
patent: 3352624 (1967-11-01), Harding et al.
patent: 3511829 (1970-05-01), Armento
patent: 3755290 (1973-08-01), DE Montmollin
Townend, J., Soc. Dyers and Colourists, June 1945, pp. 144-149.
Colour Index (Third Edition), vol. 4 (Soc. Dyers and Colourists), pp. 4102 and 4103.

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