Aqueous dyestuff preparations of dyestuffs insoluble to difficul

Details Aqueous dyestuff preparations of dyestuffs insoluble to difficul Aqueous dyestuff preparations of dyestuffs insoluble to difficul

1974-09-17

1976-08-31

Welsh, M. J.

Bleaching and dyeing; fluid treatment and chemical modification

Treatment of hides, skins, feathers and animal tissues

Tanning

C09B 6700

Patent

active

039778282

ABSTRACT:
New aqueous, stable, highly concentrated, finely dispersed, flowable dyestuff preparations having a low content of dispersing agents and a high content of dyestuff insoluble to difficultly soluble in water are described, which dyestuffs have a particle size smaller than 10 .mu., particularly smaller than 2 .mu., the said preparations being characterised in that they contain at least 10 percent by weight of water, at least 30 percent by weight of a finely dispersed dyestuff, especially a disperse or vat dyestuff, and a mixture consisting of at most 10 percent by weight of an anionactive dispersing agent, at most 5 percent by weight of a nonionic dispersing agent and at most 35 percent by weight of a hydrotropic agent as well as, optionally, further additives.
The said dyestuff preparations are especially useful for the preparation of printing pastes having an aqueous base or a water-in-oil emulsion base, which themselves can be used preferably for the printing of carrier materials, particularly paper, suitable for transfer printing.

REFERENCES:
patent: 3067053 (1962-12-01), Tarantino
patent: 3547572 (1970-12-01), Lunet et al.
patent: 3730905 (1973-05-01), Koerner et al.
patent: 3775056 (1973-11-01), Grossmann et al.

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