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US 4,281,999 AGranted
Aqueous dye preparations of dyes difficultly soluble in water
AssigneeCiba-Geigy Corporation
InventorsCarl Becker, Georges Mahler, Paul Erzinger
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AssigneeCiba-Geigy Corporation
InventorsCarl Becker, Georges Mahler, Paul Erzinger
Estimating the term…
The invention relates to novel aqueous dye preparations of dyes difficultly soluble in water, to processes for producing these dye preparations, to the use thereof for preparing printing pastes, and to the use of the said dye preparations for printing carrier materials for transfer printing, for printing in particular textile materials, or for dyeing textile materials, and also to the printed carrier materials, and to the material printed by means of these dye preparations in the transfer-printing process, or to the material dyed or printed in the dyeing or printing process. The novel dye preparations contain water, a finely dispersed dye of which the solubility in boiling perchloroethylene is lower than 0.5 g/kg, an anionic and/or nonionic dispersing agent, a resin which has affinity for the dye and which is more soluble than the dye in a solvent having limited miscibility with water, and optionally further additives.
An aqueous dyestuff composition, containing at least 10% by weight of water, 25 to 60% by weight of a finely dispersed dye which is difficultly soluble in water and is soluble in boiling perchloroethylene to the extent of less than 0.5 g/kg, an effective amount of a dispersing agent selected from the group consisting of anionic dispersing agents and non-ionic dispersing agents, and a resin which has affinity for the dye and which is more soluble than the dye in a solvent that is soluble in water to the extent of about 10 to 350 g/l, wherein the resin is a synthetic ketone resin and is present in an amount of 1 to 10% by weight, relative to the dye.
Dependencies are inferred from the claim text.