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US 7,468,081 B2Granted
Mono-, di-or trichromatic dyeing or printing of natural or synthetic polyamide fiber materials
AssigneeDyStar Textilfarben GmbH & Co. Deutschland KG
InventorsStefan Ehrenberg, Andreas Giehl, Jörg Wörner
Life of this patent
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Abstract
The present invention relates to processes for mono-, di- or trichromatic dyeing or printing of natural or synthetic polyamide fiber materials, these processes utilizing a) blue-dyeing dye mixture, b) a red-dyeing dye mixture and/or c) a yellow-dyeing dye mixture, and also blue-dyeing, red-dyeing and yellow-dyeing dye mixtures and processes for their preparation.
Claims8
A red-dyeing dye mixture comprising at least one dye of the general formula (III)
- in an amount of 20% to 80% by weight, based on the total dye content, and at least one dye of the general formula (IV)
- in an amount 20% to 80% by weight, based on the total dye content,
- where
- R5 represents hydrogen or —SO3M;
- R6 represents hydrogen;
- Y2 and Y3 independently represent vinyl or β-sulfatoethyl;
- and
- M represents hydrogen, sodium or potassium.
5 more elements
Dependencies are inferred from the claim text.