Abstract: The present invention relates to the field of isomeric mixture of reactive dyes that are suitable for the dyeing or printing of nitrogen-containing or hydroxy-group-containing fibre materials and yield on such materials dyeings or prints having a good build-up behaviour, a high fixation rate, good washing off properties of the unfixed dyes and good all-round fastness properties, as well as a good stability to various dyeing parameters such as a good bath stability. Furthermore, the present invention relates to a process for dyeing or printing of nitrogen-containing or hydroxy-group-containing fibre materials, wherein the isomeric mixture of reactive dyes according to the invention is used. The isometric mixture of the present invention comprises at least an isomer of formula (Ia) and an isomer of formula (Ib).

Abstract: A reactive dye of formula wherein M is hydrogen, an alkali metal or one equivalent of an alkaline earth metal, Z1 is vinyl, ?-sulfatoethyl or the radical —NHCO—(CH2)3—SO2—CH2CH2Cl; R1 denotes H or sulfo; and R2 is H, methyl, methoxy or sulfo, n is the number 3; Y is vinyl or a radical —CH2—CH2-U and U is —Cl or —OSO3H, is suitable for dyeing and printing cellulosic or amide-group-containing fibre materials.

Abstract: The present invention relates to the use of reactive colourless and metal-free protein cross-linking agents for the cross-linking (tanning) of protein-containing substrates, said agents are environmentally friendly and give an improved fixation yield, a long-term cross-linking (tanning) stability and good washing off properties. The present invention further relates to processes for the cross-linking (tanning) of protein-containing substrates thereby creating an environmentally friendly process which minimizes the use of chemicals and further improves the quality and efficiency of the tanning and dyeing process.

Abstract: A dye mixture comprising at least one dye of formula (formula) and at least one dye of formula (formula), wherein R1 is hydrogen or C1-C4alkyl, R2 is hydrogen or C1-C4alkyl, C1-C4alkoxy or sulfo, Q1 is a fibre-reactive radical of formula —(CH2)2-3—SO2—Y2 (3a) or —(CH2)2-3—O—(CH2)2-3—SO2—Y3 (3b), Q2 has the meaning of Q1, or is hydrogen or C1-C4alkyl, X1 and X2 are each independently of the other halogen, 3-carboxypyridin-1-yl or 3-carbamoylpyridin-1-yl, Y1, Y2 and Y3 are each independently of the others vinyl or a radical —CH2—CH2—U and U is a group removable under alkaline conditions, Z1 and Z2 are each independently of the other —S02-Y, wherein Y is vinyl or a radical —CH2—CH2—U and U is a group removable under alkaline conditions, M is hydrogen, an alkali metal or one equivalent of an alkaline earth metal, k and n are each independently of the other the number 0, 1 or 2, I and q are each independently of the other the number 0 or 1, m is the number 0 or 1, and wherein the diazo component of the dye of form

Abstract: A reactive dye of formula wherein M is hydrogen, an alkali metal or one equivalent of an alkaline earth metal, Z1 is vinyl, ?-sulfatoethyl or the radical —NHCO—(CH2)3—SO2—CH2CH2Cl; R1 denotes H or sulfo; and R2 is H, methyl, methoxy or sulfo, n is the number 3; Y is vinyl or a radical —CH2—CH2-U and U is —Cl or —OSO3H, is suitable for dyeing and printing cellulosic or amide-group-containing fibre materials.

Abstract: A reactive dye of formula wherein Z1 and Z2 are each independently of the other vinyl or a radical —CH2—CH2—Y and Y is a group removable under alkaline conditions, n is the number 1, 2, 3 or 4, m is the number 2, 3 or 4, q is the number 0 or 1, and the substituents —(SO3H)n, —SO2—Z1 and —NH—CO—(CH2)m—SO2—Z2 are bound to the benzene rings A, B and/or C, said benzene rings A, B and/or C are optionally further substituted by at least one substituent selected from the group C1-C4alkyl, C1-C4alkoxy and halogen, is suitable for dyeing and printing cellulosic or amide-group-containing fibre materials.

Abstract: A reactive dye of formula wherein Z1 and Z2 are each independently of the other vinyl or a radical —CH2—CH2—Y and Y is a group removable under alkaline conditions, n is the number 1, 2, 3 or 4, m is the number 2, 3 or 4, q is the number 0 or 1, and the substituents —(SO3H)n, —SO2—Z1 and —NH—CO—(CH2)m—SO2—Z2 are bound to the benzene rings A, B and/or C, said benzene rings A, B and/or C are optionally further substituted by at least one substituent selected from the group C1-C4alkyl, C1-C4alkoxy and halogen, is suitable for dyeing and printing cellulosic or amide-group-containing fibre materials.

Abstract: Reactive dyes of formula (1), wherein R1 and R2 are each independently of the other hydrogen or unsubstituted or substituted C1-C4alkyl, one of the radicals D1 and D2 is a radical of the formula (2), the other one of the radicals D1 and D2 is a radical of the formula (3a), or (3b), wherein (R3)n denotes n identical or different substituents selected from the group C1-C4alkyl, C1-C4alkoxy and sulfo, Z1 is a radical of the formula —SO2—Y (4a), —CONH—(CH2)p—SO2—Y (4b), —NH—CO—CH(Hal)-CH2-Hal (4c), —NH—CO—C(Hal)?CH2 (4d), or (4e), wherein X1 is halogen, T1 independently has the definition of X1, is a non-fibre-reactive substituent or is a fibre-reactive radical of the formula (5a), —NH—(CH2)2-3—SO2—Y (5b), or —NH—(CH2)2-3—O—(CH2)2-3—SO2—Y (5c), R4 is hydrogen or unsubstituted or substituted C1-C4alkyl, (R5)0-2 denotes from 0 to 2 identical or different substituents from the group C1-C4alkyl, C1-C4alkoxy and sulfo, Hal is halogen, Y is vinyl or a —CH2—CH2—U radical and U is a group that is removable under alkaline