Fibre-reactive dyes, their preparation and their use

A process for printing a substrate comprising spraying individual droplets of an aqueous ink onto the substrate from a nozzle in a controlled manner wherein the aqueous ink comprises a reactive dye of formula

• wherein
• Q1 and Q2 are each independently of the other hydrogen or unsubstituted or substituted
• C1-C4alkyl,
• D1 corresponds to a radical of formula (5) or (11)
• wherein
• R5 is hydrogen or C1-C4 alkyl,
• (R7)0-3 denotes from 0 to 3 identical or different substituents selected from the group halogen, C1-4alkyl, C1-C4 alkoxy, C2-C4 alkanoylamino, carboxy and sulfo,
• X4 is fluorine or chlorine,
• Z2 is a fibre-reactive radical of formula
• —SO2—Y (3a),
• wherein
• Y is vinyl or β-sulfatoethyl,
• T3 is a radical of formula
• wherein
• (R7)0-3 is as defined hereinabove,
• (R8)0-3 denotes from 0 to 3 identical or different substituents from the group halogen, nitro, cyano, trifluoromethyl, sulfamoyl, carbamoyl, C1-C4 alkyl, C1-C4 alkoxy unsubstituted or substituted by hydroxy, sulfato or by C1-C4 alkoxy, amino, C2-C4 alkanoylamino, ureido, hydroxy, carboxy, sulfomethyl, C1-C4 alkylsulfonylamino and sulfo,
• R11 and R13 are each independently of the other hydrogen, C1-C4 alkyl or phenyl,
• R12 is hydrogen, cyano, carbamoyl or sulfomethyl,
• (R14)0-3 denotes from 0 to 3 identical or different substituents from the group C1-C4 alkyl,
• C1-C4 alkoxy, halogen, carboxy and sulfo, and
• Z2 is as defined hereinabove,
• K3 is the radical of a coupling component of formula
• wherein
• R′8 is hydrogen, sulfo, or C1-C4 alkoxy unsubstituted or substituted in the alkyl moiety by hydroxy or by sulfato, and
• R′8a is hydrogen, C1-C4 alkyl, C1-C4 alkoxy, C2-C4 alkanoylamino, ureido or a radical of formula
• wherein
• R1a is hydrogen,
• T1 is amino;
• N-mono- or N,N-di-C1-C4 alkylamino unsubstituted or substituted in the alkyl moiety/moieties by hydroxy, sulfato or by sulfo;
• morpholino;
• phenylamino unsubstituted or substituted on the phenyl ring by sulfo, carboxy, acetylamino, chlorine, methyl or by methoxy;
• or N—C1-C4 alkyl-N-phenylamino unsubstituted or substituted in the same way on the phenyl ring and in which the alkyl is unsubstituted or substituted by hydroxy, sulfo or by sulfato;
• or naphthylamino unsubstituted or substituted by from 1 to 3 sulfo groups, and
• X1 is chlorine
• D2 has the same definition as D1 or is a radical of formula
• wherein
• (Q3)0-3 denotes from 0 to 3 identical or different substituents selected from the group halogen, C1-C4alkyl, C1-C4alkoxy, carboxy and sulfo and
• Z1 is a radical of formula
• —SO2—Y (3a),
• —NH—CO—(CH2)m—SO2—Y (3b),
• —CONH—(CH2)n—SO2—Y (3c),
• —NH—CO—CH(Hal)-CH2-Hal (3d) or
• —NH—CO—C(Hal)=CH2 (3e),
• Y is vinyl or a —CH2—CH2—U radical and U is a group that is removable under alkaline conditions,
• m and n are each independently of the other the number 2, 3 or 4, and
• Hal is halogen
• with the proviso that the dye of formula (1) does not contain a hydroxysulfonylmethyl group.