Abstract: The invention relates to chromium complexes of the formula ##STR1## in which L is H.sub.2 O, NH.sub.3, R.sub.2 --OH, R.sub.2 --NH.sub.2, (R.sub.2).sub.2 NH, (R.sub.2).sub.3 N or pyridine, wherein R.sub.2 is C.sub.1-6 -alkyl unsubstituted or substituted by halogen, C.sub.1-4 -alkoxy or amino, B is 8-hydroxyquinoline, 5-chloro-8-hydroxyquinoline, 5-hydroxyacridine, 6-hydroxy-4,7-phenanthroline, pyridine-2-carboxylic acid, 8-carboxyquinoline, 5,7-dibromo-8-hydroxyquinoline, o-hydroxyaniline, o-hydroxynaphthylamine, proline, glycine, serine, aspartic acid or R.sub.1 --CH(NH.sub.2)--COOH, wherein R.sub.1 is C.sub.1-6 -alkyl unsubstituted or substituted by halogen, C.sub.

Abstract: The invention relates to chromium complexes of the formula ##STR1## in which A is the radical of a dicyclically metallizable azo or azomethine dye, B is the radical of a monoanionic bidentate complexible organic compound which is bonded to the chromium atom via oxygen atoms, L is a colorless monofunctional ligand, X is halogen-substituted C.sub.1-4 -alkanoyl, C.sub.1-4 -alkenoyl, halogen-substituted C.sub.1-4 -alkenoyl, monohalogenopyrimidinyl, dihalogenopyrimidinyl or trihalogenopyrimidinyl which is bonded to A and/or B via ##STR2## and R.sub.5 is hydrogen or C.sub.1-4 -alkyl, Ka is a cation, m is 1, 2 or 3, n is 1 or 2 and the SO.sub.3.sup..crclbar. Ka group is bonded to A and/or B. These chromium complexes are suitable for dyeing nitrogen-containing or hydroxy-containing materials and they produce level dyeings having good all-round fastness properties.

Abstract: The invention relates to chromium complexes of the formula ##STR1## in which A is the radical of a dicyclically metallizable azo or azomethine dye, B is the radical of a potentially at least bidentate bianionic complexible organic compound which contains no azo or azomethine group, L is a colorless monofunctional ligand, X is a fibre-reactive radical, Ka is a cation, K is 0 or 1, m is 1, 2 or 3, n is 1 or 2, and the X radical and the SO.sub.3.sup..crclbar. Ka group are each bonded to the radicals A and B, to a process for preparing the chromium complexes of the formula (1), and to a combined preparation and dyeing process.

Abstract: The invention relates to chromium complexes of the formula ##STR1## in which B is the radical of a bidentate bianionic compound, L is H.sub.2 O, NH.sub.3, alkanol, alkylamine, dialkylamine, trialkylamine or pyridine, D is a benzene or naphthalene diazo component, Y is the nitrogen atom or the CH group, K is a coupling component, R is hydrogen, alkyl or phenyl, X is a fibre-reactive group,Ka is a cation, m is 1, 2 or 3, n is 1 or 2 and k is 0 or 1.These chromium complexes are suitable for dyeing nitrogen-containing or hydroxy-containing materials and they produce level dyeings having good all-round fastness properties.

Abstract: A process of dyeing polyamide-containing material is disclosed using dyes of the following formula: ##STR1## wherein Me is cobalt or chromium,Ka.sup..sym. is a cation,p is 0 or 1,R and R' are each independently of the other hydrogen or a group of the formula --CO--(O).sub.n --Y, wheren is 0 or 1, andY is C.sub.1 -C.sub.5 alkyl, or phenyl which may be substituted by nitro, halogen, C.sub.1 -C.sub.5 alkyl or C.sub.1 -C.sub.5 alkoxy,with the proviso that R and R' may not both be hydrogen if p is 1.Novel dyes within this class are also disclosed. The process is especially useful for dyeing leather.

Abstract: A process for the photochemical stabilization of fibre materials made of synthetic polyamides, which comprises treating the fibre material with at least one water-soluble copper complex dye or with a mixture of copper complex compounds containing at least one copper complex dye, or containing at least one copper complex dye in combination with a water-soluble 1:2 cobalt complex dye, 1:2 chromium complex dye, or an azo, anthraquinone, nitroaryl or dioxazine dye.The fibre materials treated (dyed) by the process of the invention are distinguished by very high tear strength and elongation values after exposure to light or exposure to hot light.

Abstract: Metal complex dyes that produce level, fast dyeings on textile materials are provided according to the formula ##STR1## wherein: D is a benzene, naphthalene or heterocyclic radical of a diazo component;Y is nitrogen or --CH;K is the radical of a coupling component if Y is nitrogen, or an o-hydroxyaldehyde radical if Y is --CH:Ka is a cation;Me is chromium or cobalt;Z.sub.1 is --O-- or --COO-- ortho to N.dbd.YZ.sub.2 is --O-- or --NR vicinal to N.dbd.Y, wherein R is hydrogen or substituted or unsubstituted C.sub.1 -C.sub.4 alkyl or phenyl;X is a fiber reactive radical bound directly to or through an amino or amino-containing group to the complex;R.sub.1 is a direct bond or substituted or unsubstituted C.sub.1 -C.sub.8 -alkyl, C.sub.1 -C.sub.8 -alkenyl, or aryl radical or heterocyclic radical containing 1 to 3 sulfur, oxygen or nitrogen atoms;R.sub.2 is hydrogen or substituted or unsubstituted C.sub.1 -C.sub.8 -alkyl or aryl;R.sub.3 is hydrogen or substituted or unsubstituted C.sub.1 -C.sub.

Abstract: Chromium complex dyes which, in the form of the free acid, have the formula ##STR1## wherein Z is hydrogen, nitro, chlorine or naphthylazo or phenylazo, wherein naphthyl or phenyl is unsubstituted or substituted by nitro, chlorine, bromine, C.sub.1-5 -alkyl or C.sub.1-5 -alkoxy, A is naphthyl or phenyl containing the oxygen atom in o-position to the azomethine and wherein naphthyl or phenyl is unsubstituted or substituted by C.sub.1-5 -alkyl, halogen or naphthylazo or phenylazo wherein naphthyl or phenyl is unsubstituted or substituted by nitro, chlorine, bromine, C.sub.1-5 -alkyl or C.sub.1-5 -alkoxy, D is sulfophenyl which is unsubstituted or substituted by nitro or chlorine, or sulfonaphthyl which is unsubstituted or substituted by nitro, and is bonded to the azo group in the ortho-position to the oxygen atom and R is chloroacetyl, bromoacetyl, .alpha.-chloroacryloyl, .alpha.-bromoacryloyl, .alpha.,.beta.-dichloropropionyl, .alpha.,.beta.

Abstract: The present invention relates to a process for the differential dyeing of such polyamide fibres and materials containing polyamide fibres as are made of components which differ in dyeability, or mixtures of polyamide fibres, with dyes or dye mixtures, which comprises using for dyeing these materials an aqueous liquor which contains a dye of the formula ##STR1## in which A.sub.1 is hydrogen or C.sub.1-4 alkyl and R is a C.sub.2-5 -alkanoyl, C.sub.3-6 -alkenoyl, (C.sub.1-4 -alkoxy)carbonyl, phenoxycarbonyl, C.sub.1-4 -alkylsulfonyl or phenylsulfonyl radical which can be substituted in the alkyl, alkenyl, alkoxy, phenoxy or phenyl moiety, or a mixture of a dye of the formula (1) with a monosulfo-containing anthraquinone dye, and to those dyes of the formula (1) in which A.sub.1 is as defined above and R is a C.sub.1-4 -alkylsulfonyl or phenylsulfonyl radical which can be substituted in the phenyl moiety by C.sub.1-4 -alkyl.

Abstract: The present invention relates to copper, nickel, chromium or cobalt complexes of azo or azomethine dyes which contain a group of the formula ##STR1## wherein Z is a bridge Member of the formula--SO.sub.2 --, ##STR2## wherein R is hydrogen or a low molecular alkylene radical or an arylene radical, Ar is an arylene radical, m is 1 or 2 and U is a sulpho or carboxy group.

Abstract: Chromium complex dyes which, in the form of the free acid, have the formula ##STR1## wherein Z is hydrogen, nitro, chlorine, or an arylazo group, Q is a nitrogen atom or the CH-- group, A is the radical of a coupling component which couples in the ortho-position to the oxygen atom if Q is a nitrogen atom, or is the radical of an o-hydroaldehyde if Q is the CH-- group, D is a sulfophenyl radical which can be substituted by nitro or chlorine, or a sulfonaphthyl radical which can be substituted by nitro and is bonded to the azo group in the orthoposition to the oxygen atom, and R is a reactive group. These dyes are obtained by chroming the corresponding o,o'-dihydroxyazo compounds or o,o'-dihydroxyazomethine compounds, the reactive radical R being introduced by acylation before or after the chroming. They are suitable for dyeing natural or synthetic polyamide material.

Abstract: Cobalt and chromium complex dyes which contain, bonded to a metal atom, one molecule of each of the azo compounds of the formula ##STR1## wherein R is methyl or ethyl and the phenyl ring a is unsubstituted or substituted by 1 to 2 chlorine atoms, nd mixtures thereof with the symmetrical 1:2 cobalt or chromium complex dyes of the azo compounds of the formulae (1) and (2), said dyes being useful in the dyeing and printing of a variety of materials, especially nitrogen containing materials such as silk, leather, polyamides, polyurethanes and especially wool to obtain level dyes having good fastness to light, washing, water, hot water, fulling, decatizing and carbonizing.

Abstract: The present invention relates to copper, nickel, chromium or cobalt complexes of azo or azomethine dyes which contain a group of the formula--N.dbd.N.dbd.Ar).sub.m-1 Z--R.sub.2 --Uwherein Z is a bridge member of the formula ##STR1## wherein R.sub.1 is hydrogen or a low molecular alkyl group, R.sub.2 is a low molecular alkylene radical or an arylene radical, Ar is an arylene radical, m is 1 or 2 and U is a sulpho or carboxy group.

Abstract: The invention relates to the chromium complex dye of the formula ##STR1## wherein Me.sup..sym. is a cation, useful for dyeing nitrogenous materials to produce dyeings which are level and have good fastness to light, washing, fulling, decatizing and carbonizing.

Abstract: The present invention relates to copper and nickel complexes of the formula ##STR1## wherein Me is copper or nickel;p is 1 or 2;E is the radical of a napthol or a phenol;R.sub.1 is hydrogen or lower alkyl;R.sub.2 is alkylene or arylene; andM is hydrogen, an alkali metal or ammonium.These dyes are suitable for dyeing and printing natural or synthetic polyamide materials; the dyeings obtained being characterized by their purity, depth, brilliance of shade, levelness and fastness properties.