Disperse azo dyestuffs
View Patent ↗The present invention relates to a dyestuff of the formula (I) wherein each of G 1 and G 2 , independently is hydrogen, (C 1 -C 4 )-alkyl, trifluoromethyl, halogen, nitro, cyano or —SO 2 —T, wherein T is halogen, (C 1 -C 4 )-alkyl, (C 1 -C 4 )-alkoxy, aryl or aryloxy; K is a coupling component; and n is 1 or 2. The invention also relates to a process for its preparation and their use and for ink jet printing containing the ink.
1. A dyestuff the formula (Ia)
wherein
each of G 1 and G 2 , independently is hydrogen, (C 1 -C 4 -alkyl, trifluoromethyl, halogen, nitro, cyano or —SO 2 —T wherein T is halogen, (C 1 -C 4 )-alkyl, (C 1 -C 4 )-alkoxy, aryl or aryloxy;
K is a coupling component.
2. A dyestuff of the formula (Ic)
wherein
G 1 is hydrogen, (C 1 -C 4 )-alkyl, trifluoromethyl halogen, nitro, cyano or —SO 2 —T, wherein T is halogen, (C 1 -C 10 -alkyl, (C 1 -C 4 )-alkoxy, aryl or aryloxy;
K is a coupling component.
3. A dyestuff of the formula (Iaa)
wherein
each of G 1 and G 2 , independently is hydrogen, chlorine, bromine, nitro or cyano;
R 1 is hydrogen, methyl, ethyl, methylsulfonylamino, acetylamino or propionylamino;
each of R 7 and R 3 , independently is hydrogen, methyl, ethyl, propyl or butyl or methyl, ethyl, propyl or butyl which is substituted by hydroxy, cyano, —COOCH 3 ,
—COOC 2 H 5 , —COOphenyl, —OCOCH 3 , —OCOC 2 H 5 , —OCOphenyl, methoxy, ethoxy or phenyl, or is allyl; and
R 4 is hydrogen, methyl, ethyl, methoxy, ethoxy or chlorine.
4. A process for the preparation of the dyestuff as claimed in claim 1 , which comprises diazotisating an amine of the formula III
wherein
each of G 1 and G 2 , independently is hydrogen, (C 1 -C 4 )-alkyl, trifluoromethyl, halogen, nitro, cyano or —SO 2 —T, wherein T is halogen, (C 1 -C 4 )-alkyl, (C 1 -C 4 -alkoxy, aryl or aryloxy;
n is 1 or 2
and coupling onto a compound of the formula IV
H—K (IV)
wherein K is a coupling component.
5. A process for dyeing or printing of a synthetic textile material which comprises contacting the material with the dyestuff as claimed in claim 1 .
6. Ink for injet printing which contains at least one dyestuff according to claim 1 .
7. A process for the preparation of the dyestuff as claimed in claim 2 , which comprises diazotisating an amine of the formula III
wherein
each of G 1 and G 2 , independently is hydrogen, (C 1 -C 4 -alkyl, trifluoromethyl, halogen, nitro, cyano or —SO 2 —T, wherein T is halogen, (C 1 -C 4 )-alkyl, (C 1 -C 4 )-alkoxy, aryl or aryloxy;
n is 1 or 2
and coupling onto a compound of the formula IV
H—K (IV)
wherein K is a coupling component.
8. A process for dyeing or printing of a synthetic textile material which comprises contacting the material with the dyestuff as claimed in claim 2 .
9. Ink for injet printing which contains at least one dyestuff according to claim 2 .
10. A process for the preparation of the dyestuff as claimed in claim 3 , which comprises diazotisating an amine of the formula III
wherein
each of G 1 and G 2 , independently is hydrogen, (C 1 -C 4 -alkyl, trifluoromethyl, halogen, nitro, cyano or —SO 2 —T, wherein T is halogen, (C 1 -C 4 )-alkyl, (C 1 -C 4 )-alkoxy, aryl or aryloxy;
n is 1 or 2
and coupling onto a compound of the formula IV
H—K (IV)
wherein K is a coupling component.
11. A process for dyeing or printing of a synthetic textile material which comprises contacting the material with the dyestuff as claimed in claim 3 .
12. Ink for injet printing which contains at least one dyestuff according to claim 3 .