Patent ID: 7358345

Claim:
Dyestuff of the formula I wherein D is a group of the formula (IIa) wherein T 1 , T 2 and T 3 are, independently, hydrogen, halogen or nitro; T 4 is hydrogen, halogen, cyano or nitro; wherein at least one of T 1 , T 2 , T 3 and T 4 is not hydrogen; or a group of the formula (IIb) wherein T 5 is hydrogen or halogen; and T 6 is hydrogen, —SO 2 CH 3 , —SCN or nitro; wherein at least one of T 5 and T 6 is not hydrogen; or a group of the formula (IIc) or a group of the formula (IId) wherein T 7 is nitro, —CHO or a group of the formula wherein T 10 is —H, halogen, nitro and cyano; T 8 is hydrogen or halogen; or T 9 is nitro, cyano, —COCH 3 or —COOT 10′ , wherein T 10′ is (C 1 -C 4 )-alkyl; or a group of the formula (IIe) R 1 is hydrogen, (C 1 -C 4 )-alkyl or —NHCOR 6 , where R 6 is (C 1 -C 4 )-alkyl or phenyl; R 2 is unsubstituted (C 1 -C 6 )-alkyl, substituted (C 1 -C 6 )-alkyl, benzyl or phenylethyl and wherein said substituted (C 1 -C 6 )-alkyl is substituted by hydroxyl, (C 1 -C 4 )-alkoxy or halogen; R 3 is hydrogen or methyl; R 4 is hydrogen or methyl; R 5 is hydrogen, methyl or phenyl; R 7 is hydrogen, chloro, methoxy or ethoxy; n is 0, 1 or 2; s is 0 or 1; with the proviso that in the case R 1 , R 3 , R 4 , R 5 and R 7 are hydrogen and n=0 D is a group of the formula (IIc), (IId), (IIe) or (IIa) wherein T 1 is not nitro if T 2 , T 3 and T 4 are hydrogen, if T 2 and T 3 are hydrogen and T 4 is chlorine or cyano and if T 2 and T 4 are hydrogen and T 3 is chlorine; and with the further proviso that in the case R 1 is methyl, R 3 , R 4 , R 5 and R 7 are hydrogen and n=0 then R 2 is unsubstituted (C 1 -C 6 )-alkyl.