Tetrazo dyestuffs

A compound of the formula (I) ##STR63## in which T represents the radical of a tetrazo component,

• R.sup.1 denotes hydrogen or substituted or unsubstituted C.sub.1 -C.sub.4 -alkyl,
• R.sup.2 and R.sup.3 together with the N atom to which they are bonded form a saturated or unsaturated 3- to 8-membered ring containing no further heteroatoms or containing 1 or 2 further heteroatoms selected from the group consisting of O, S, SO, SO.sub.2 and NR, where R is H or substituted or unsubstituted C.sub.1 -C.sub.6 -alkyl, which is unsubstituted or substituted by C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.4 -alkoxy, C.sub.1 -C.sub.4 -hydroxyalkyl or C.sub.1 -C.sub.4 -aminoalkyl,
• X represents NR.sup.2 R.sup.3
• ring A is unsubstituted or further substituted with one or more members of the group consisting of C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.4 -alkoxy, halogen, OH, S--C.sub.1 -C.sub.4 -alkyl, NR.sup.4 R.sup.5 wherein R.sup.4 and R.sup.5, independently of one another represent hydrogen, or C.sub.1 -C.sub.4 -alkyl which is unsubstituted or substituted by one or more water solubilizing groups selected from the group consisting of SO.sub.3 H, OSO.sub.3 H, and COOH;
• SO.sub.3 H, COOH, --NR.sup.1 COC.sub.1 -C.sub.4 -alkyl, NR.sup.1 COC.sub.6 -C.sub.10 -aryl, --NR.sup.1 --SO.sub.2 --C.sub.1 -C.sub.4 -alkyl, NR.sub.1 --SO.sub.2 --C.sub.6 -C.sub.10 -aryl, --NR.sup.1 CONH.sub.2, --NR.sup.1 --COCH.sub.2 OH, NR.sup.1 COOC.sub.1 -C.sub.4 -alkyl and NR.sup.2 R.sup.3 wherein the substituents for the substituted alkyl radicals in the definitions of R.sup.1, R.sup.1' and R are selected from the group consisting of OH, C.sub.1 -C.sub.4 -alkoxy, Cl, F, Br, COOH, SO.sub.3 H, OSO.sub.3 H, NR.sup.4 R.sup.5, R.sup.4 and R.sup.5 having the meanings given above, and combinations thereof,
• K denotes a radical of the formula (II) ##STR64## in which m represents 1,
• R.sup.1' denotes hydrogen or substituted or unsubstituted C.sub.1 -C.sub.4 -alkyl,
• R.sup.2' and R.sup.3' together with the N atom to which they are bonded form a saturated or unsaturated 3- to 8-membered ring containing no further heteroatoms or containing 1 or 2 further heteroatoms selected from the group consisting of O, S, SO, SO.sub.2 and NR, where R is H or unsubstituted or substituted C.sub.1 -C.sub.4 -alkyl, which is unsubstituted or substituted by C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.4 -alkoxy, C.sub.1 -C.sub.4 -hydroxyalkyl or C.sub.1 -C.sub.4 -aminoalkyl,
• X' represents NR.sup.2' R.sup.3'
• ring A' is not further substituted or is further substituted with one or more members of the group consisting of C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.4 -alkoxy, halogen, OH, S--C.sub.1 -C.sub.4 -alkyl, NR.sup.4 R.sup.5 wherein R.sup.4 and R.sup.5, independently of one another represent hydrogen, or C.sub.1 -C.sub.4 -alkyl which is unsubstituted or substituted by one or more water solubilizing groups selected from the group consisting of SO.sub.3 H, OSO.sub.3 H, and COOH;
• SO.sub.3 H, COOH, --NR.sup.1 COC.sub.1 -C.sub.4 -alkyl, NR.sup.1 COC.sub.6 -C.sub.10 -aryl, --NR.sup.1 --SO.sub.2 --C.sub.1 -C.sub.4 -alkyl, NR.sub.1 --SO.sub.2 --C.sub.6 -C.sub.10 -aryl, --NR.sup.1 CONH.sub.2, --NR.sup.1 --COCH.sub.2 OH, NR.sup.1 COOC.sub.1 -C.sub.4 -alkyl and NR.sup.2 R.sup.3
• wherein the substituents for the substituted alkyl radicals in the definitions of R.sup.1, R.sup.1' and R are selected from the group consisting of OH, C.sub.1 -C.sub.4 -alkoxy, Cl, F, Br, COOH, SO.sub.3 H, OSO.sub.3 H, NR.sup.4 R.sup.5, R.sup.4 and R.sup.5 having the meanings given above, and combinations thereof.