| abstract |
A dyestuff of the formula (I) n nwhereinn D is a diazo component; R 1 is hydrogen, (C 1 -C 4 )-alkyl, hydroxy, —NHCOR 6 or —NHSO 2 R 6 ; R 2 is hydrogen, halogen or (C 1 -C 4 )-alkoxy; R 3 is hydrogen or methyl; R 4 is hydrogen, (C 1 -C 6 )-alkyl, substituted (C 1 -C 6 )-alkyl, (C 2 -C 6 )-alkyl, which is interrupted by 1, 2 or 3 heteroatoms wherein said heteroatoms are —0—, —S— or —NR 7 , substituted (C 2 -C 6 )-alkyl, which is interrupted by 1, 2 or 3 heteroatoms wherein said heteroatoms are —0—, —S— or —NR 7 , (C 2 -C 6 )-alkenyl, substituted (C 2 -C 6 )-alkenyl, benzyl or phenethyl; R 5 is hydrogen or methyl; R 6 is (C 1 -C 4 )-alkyl, phenyl or substituted phenyl; R 7 is (C 1 -C 4 )-alkyl, phenyl or substituted phenyl; m is 0, 1 or 2; and n is 0 or 1. The invention further relates to use of the dyestuff and the process of making the dyestuff. |