Commercial packages containing dyestuffs
AssigneeCiba-Geigy Corporation
InventorsHans Heini Zweifel, Arthur Buehler, Alfred Fasciati
Life of this patent
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Abstract
New commercial packages of organic dyestuffs, characterised in that they consist of an organic dyestuff or an optical brightener in dry, pulverulent form that is provided with a wrapping, which is soluble in a solvent suitable for the preparation of a dye solution or dye paste, and with the dyestuff or optical brightener so wrapped being optionally provided with a second wrapping that is preferably impervious to water.
Claims6
A process for the preparation of an aqueous dyebath or aqueous printing paste, comprising the step of adding to the aqueous medium a dry pulverulent, water-soluble, fiberreactive dyestuff wrapped in a water-soluble foil material selected from the group consisting of mucin, hydroxyalkylcellulose, carboxymethylcellulose, polyvinylmethylether/maleic anhydride copolymer and polyvinylalcohol.
Dependencies are inferred from the claim text.