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AssigneeHoechst Aktiengesellschaft
InventorsAndreas Von Der Eltz, Werner Hubert Russ, Bengt-Thomas Grobel
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Dye mixtures of fiber-reactive azo dyes and their use for dyeing hydroxy- and/or carboxamido-containing fiber material Red-dyeing fiber-reactive phenylazoaminonaphthol dyes, yellow-dyeing fiber-reactive phenylazoaminobenzene dyes, blue-dyeing fiber-reactive copper formazan dyes and navy-dyeing fiber-reactive disazo dyes of the formulae (1) to (5) as claimed and defined in claim 1 are described which are suitable for dyeing hydroxy- and/or carboxamido-containing fiber material, such as cellulose fiber materials, wool and synthetic polyamide fibers individually or together or some of them together or as a mixture in trichromatic dyeing methods. During the dyeing process a definite hue within the color triangle can be obtained and kept constant by adding the individual dye solutions of the individual dyes and/or mixtures of some of the dyes in a controlled manner by means of the ATR measurement technique.
A dye mixture containing one or more monoazo dyes of the formula (1), one or more monoazo dyes of the formula (2) and one or two copper-formazan dyes of the formula (3) and optionally, one or two dyes of the formula (5);
Dependencies are inferred from the claim text.