Dyestuff preparations

Bleaching and dyeing; fluid treatment and chemical modification – Treatment of hides – skins – feathers and animal tissues – Tanning

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264109, 25230122, C09B 6700

Patent

active

039589293

ABSTRACT:
Pressing of uniform shape and uniform weight of disperse dyestuffs and optical brightening agents with a solubility in water less than 0.5% at 20.degree.C which are suitable for an automate metering step and which disintegrate in aqueous dye baths to give dispersions are manufactured by compressing the dyestuff or brightening agent, an anionic dispersing agent and a solid water-soluble mould release agent which gives a neutral to weakly alkaline reaction in water.

REFERENCES:
patent: 3639168 (1972-02-01), Monti et al.
patent: 3645665 (1972-02-01), Etters

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