Stable, highly concentrated dyestuff solutions miscible with wat

Details Stable, highly concentrated dyestuff solutions miscible with wat Stable, highly concentrated dyestuff solutions miscible with wat

1976-03-03

1979-12-18

Levy, Donald

Bleaching and dyeing; fluid treatment and chemical modification

Treatment of hides, skins, feathers and animal tissues

Tanning

8 8R, 8171, 8172R, C09B 562, D06P 102

Patent

active

041792670

ABSTRACT:
Stable, highly concentrated dyestuff solutions which are miscible with water in any proportion are described and which contain at least one azo or nitro dyestuff containing sulphonic acid groups or at least one anthraquinone dyestuff dissolved in a solvent mixture consisting of an aprotic solvent or a mixture of aprotic solvents, a glycol ether and optionally water, e.g. N-methylpyrrolidone/diethylene glycol monomethyl ether which mixture exhibits a pronounced synergetic effect with regard both to the solubility of the dyestuffs and to the stability of the dyestuff solution.
These dyestuff solutions are suitable for the production of dye solution for the dyeing or printing of in particular, natural or synthetic nitrogen containing organic fibers especially polyamide carpets.

REFERENCES:
patent: 2888313 (1959-05-01), Mautner
patent: 3391985 (1968-07-01), Zurbuchen
patent: 3623834 (1970-05-01), Seuret
patent: 3637340 (1972-01-01), Mollet
patent: 3671176 (1972-06-01), Kaufmann
patent: 3809533 (1974-05-01), Srevenpipe
patent: 3887329 (1975-06-01), Heyar
patent: 3901648 (1975-08-01), Arbaud
patent: 3963430 (1976-06-01), Nonn et al.

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