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.

Abstract: Deep black-dyeing dye mixtures comprising a disazo dye conforming to the general formula (1), and one or more disazo dyes conforming to the general formula (2), wherein the amide group is in the 6, 7, or 8 position relative to the hydroxy group and wherein: M, n, W, R1, R2, R3, R4, R5, R11, L1, L2, L3 are as defined in claim 1 methods for their preparation and use thereof for dyeing hydroxyl- and/or carboxamido-containing fiber material.

Abstract: The present invention refers to trisazo dyes of the formula I or an alkali metal salt thereof; wherein: Ar1 is an optionally substituted arylene group; Ar2 is an optionally substituted aryl group; R1, R2, R3, R4, X1 and X2 are defined as given in claim 1; each of D1 and D2, independently, is a chromophore group of the formula ?wherein the variables are defined as given in claim 1, a process for their preparation and a process for colouring fibre material containing a group reactive with a reactive dye.

Abstract: The present invention refers to dyestuffs of the formula I wherein each of R1, R2, R3, R4 and R5, independently, is H or an optionally substituted alkyl group; each of X1 and X2, independently, is a labile atom or group; each of x and y, independently, is 0 or 1 and at least one of x and y is 1; each of a and b is 2 to 5 and when each of x and y is 1, a>b; and z is 0, 1, 2, 3 or 4; and wherein the variables D1 and D2 are defined as given in claim 1, processes for their preparation and their use for dyeing and printing hydroxy- and/or carboxamido-containing fiber materials.

Abstract: Reactive dye mixtures which comprise one or more dyes of the indicated general formula (i) and one or more dyes of the hereinbelow indicated and defined general formula (II) where D1, D2, D3, R0, R*, R**, T, b, f, v and M are each as defined in claim 1, the dyes of the general formulae (I) and (II) containing at least one fiber-reactive group of the formula —SO2-Z or Z2, their preparation and their use for dyeing and printing hydroxyl- and/or carboxamido-containing fiber material.

Abstract: The present invention refers to dyestuffs of the formula I wherein R is an optionally substituted alkyl group; each of R1, R2 and R3, independently, is H or an optionally substituted alkyl group; each of X1 and X2, independently, is a labile atom or group; and each of A1 and A2, independently, is a chromophoric residue, processes for their preparation and their use for dyeing and printing hydroxy- and/or carboxamido-containing fiber materials.

Abstract: Dyes of the general formula (1): where M is hydrogen, alkali, ammonium or the equivalent of an alkaline earth metal ion, X is halogen, alkoxy or an N-containing heterocycle, Q is a grouping of the formula (e) where Y is vinyl or an alkali-eliminable grouping and W is alkyl which may be interrupted by an O or an NR group and the radicals R1 and R2 represent alkyl, alkoxy, alkylcarbonylamino, arylcarbonylamino, and also the radicals R3 and R4 are alkyl or hydrogen, their preparation and their use for dyeing and printing hydroxyl- and/or carboxamido-containing material, preferably fiber material.

Abstract: The present invention relates to a process for producing cotton warp yarns having an inverse denim effect, which comprises using an indigo dyeing range to perform a dyeing step whereby the cotton warp yarn is through-dyed with indigo in one pass at a dyeing temperature of 30 to 90° C. and an indigo concentration of 5-500 g/l and a subsequent bleaching step whereby the indigo is selectively decolorized on the surface of the cotton warp yarn.

Abstract: The present invention relates to a process for through-dyeing of cotton warp yarns with indigo in an indigo dyeing range, which comprises dyeing in one pass at a dyeing temperature of 30 to 90° C. and an indigo concentration of 10-60 g/l.

Abstract: Disperse non-azo dyestuff mixture comprising:

Abstract: Mediator systems obtainable by mixing one or more salts of a metal capable of forming a plurality of valence states with at least one amino-containing complexing agent (K1) and at least one hydroxyl-containing but amino-devoid complexing agent (K2) in an alkaline aqueous medium, wherefor the complexing agents may be present as salts and the molar ratio of K1 to metal ion is from 0.1:1 to 10:1 and the molar ratio of K2 to metal ion is from 0.1:1 to 5:1 are useful for dyeing cellulosic textile material.

Abstract: A dye mixture comprises, as component (A), a reactive dye of the formula (A) wherein each of Y1 and Y2, independently, is a vinyl group or a group of the formula —CH2CH2Q in which Q is a leaving group removable under alkaline conditions to provide a vinyl group; and, as component (B), at least one additional reactive dye selected from a monopyrazole dye of the formula (I), a mono or disazo dye of the formula (II), a monoazopyridone dye of the formula (III), a monoazonaphthyl dye of the formula (IV), a disazoaminonaphthyl dye of the formula (V), a formazan dye of the formula (VI), an azoacetoacetanalide dye of the formula (VII), a disazo dye of the formula (VIII), a naphthylamide or a naphthalenetriazole dye of the formula (IX), a metal phthalocyanine dye of the formula (X) or a triphendioxazine dye of the formula (XI), as defined herein.

Abstract: Mediator systems obtainable by mixing a salt of an electrochemically active complexing metal (M1) capable of forming a plurality of valence states with a hydroxyl-containing complexing agent, which may likewise be present as salt, and with a salt of an electrochemically inactive complexing metal (M2) in an alkaline aqueous medium, wherefor the molar ratio of metal ion M2 to metal ion M1 is from 0.8:1 to 2:1 are useful for reducing dyes and dyeing cellulosic textile material.

Abstract: From 5 to 60% by weight aqueous alkaline solutions of reduced indigoid dyes are prepared by reducing the indigoid dye electrochemically in the presence of a mediator.

Abstract: The present invention relates to reactive azo dyes of the formula (I) or an alkali metal salt thereof, wherein A is formula (i) or (ii) C is an optionally substituted aromatic or heteroaromatic residue; and R1, R2, B, D, Y, a, b, c, d and n are defined as given in claim 1, a process for preparing said dyes and a process for colouring fibre material, which comprises applying thereto said dyes.

Abstract: A dye mixture comprising a disazo dye conforming to the general formula (1), and one or more monoazo dyes conforming to the general formula and a dye of the general formula (3) wherein Y, M R1 to R12 and L1 to L3 are defined as given in claim 1.

Abstract: The present invention refers to a dye mixture comprising an azo dye of the formula (I) 1

Abstract: The present invention refers to a dye mixture comprising an azo dye of the formula (I) wherein each of X and X1 independently is chlorine or bromine; R1 is absent or is C1-4 alkyl; and each of R2 and R3 independently is hydrogen, C1-6 alkyl or cyanoethyl; but when R1 is absent, R2 is n-butyl or cyanoethyl and R3 is cyanoethyl; and further dye components according to claim 1, a method for the preparation of such mixtures and a method for coloring a synthetic textile material or fiber blend thereof using such mixtures.

Abstract: Hydroxypyridonemethide azo dyes conforming to the formula (I) or its tautomeric forms where X1 to X4, R1 and R2 are each as defined in the description part, are very useful for dyeing and printing hydrophobic synthetic fiber materials and their blends with natural fiber materials.

Abstract: Deep black-dyeing dye mixtures comprising a disazo dye conforming to the general formula (1), and one or more disazo dyes conforming to the general formula (2), wherein the amide group is in the 6, 7, or 8 position relative to the hydroxy group and wherein: M, n, W, R1, R2, R3, R4, R5, R11, L1, L2, L3 are as defined in claim 1 methods for their preparation and use thereof for dyeing hydroxyl- and/or carboxamido-containing fiber material.