Back to results
US 3,966,703 AGranted
Asymmetrical frisazo dyestuffs derived from diazotized 2,7-diamino-carbazole
AssigneeBayer Aktiengesellschaft
InventorsWolf-Eckhard Bleck, Horst Nickel, Karl-Heinz Schundehutte
Life of this patent
Estimating the term…
Abstract
Azo dyestuffs of the formula ##SPC1## Wherein A and B are different radicals of an aromatic coupling component are described. The new dyestuffs are outstandingly suitable for dyeing and printing natural or synthetic fibre materials containing hydroxyl groups and nitrogen like wool, wool-cotton union, silk, high molecular polyamide as well as paper pulp and paper materials and leather to give dyeings havings good fastness properties.
Claims7
Azo dyestuff of the formula ##SPC11##
- wherein B represents a radical of the formula ##SPC12##
- A is hydroxyphenyl;
- hydroxyphenyl substituted by methyl, ethyl, tert.-butyl, cyclohexyl, methoxy, ethoxy, phenyl, chloro, acetylamino, carboxy, methoxycarbonyl, ethoxycarbonyl, hydroxy, sulfo or nitro;
- anilino;
- anilino substituted by methyl, ethyl, propyl, butyl, chloroethyl, acetoxyethyl, hydroxyethyl, cyanoethyl, acetylamino, methoxy, ethoxy, chloro, --NH.sub.2, nitro, hydroxy, sulfo, carboxymethylamino, hydroxyacetylamino, carboxycarbonylamino or aminocarbonylamino;
- hydroxynaphthalene;
- aminonaphthalene;
- hydroxynaphthalene or aminonaphthalene substituted by hydroxy, methoxy, ethoxy, hydroxyethoxy, methylsulfonylamino, amidosulfonyl, acetylamino, carboxy, amidocarbonyl, anilidocarbonyl, anilidocarbonyl substituted in the aniline nucleus by methyl, chlorine, methoxy or sulfo, sulfo, chloroacetylamino, propionylamino, benzoylamino, animobenzoylamino, chlorobenzoylamino, nitrobenzoylamino, benzenesulfonylamino, toluenesulfonylamino, aminocarbonylamino, phenylaminocarbonylamino, dimethylamino, phenylamino or chloro;
- n is 1 or 2;
- m is 0, 1 or 2;
- R.sub.1 is hydrogen, C.sub.1 -C.sub.4 -alkyl, nitro, sulfo, chloro, --NH.sub.2 or acetylamino;
- Me is copper, iron, nickel, cobalt or chromium.
9 more elements
Azo dyestuff of the formula ##SPC18##
- in which
- A' is the radical of a coupling component coupled under alkaline conditions selected from the group consisting of m-diaminophenyl, 1-hydroxy-3-aminophenyl, diethylaminophenyl, 1-diethylamino-3-aminophenyl, 1-diethylamino-3-acetylaminophenyl, 1,3-diamino-4-sulphophenyl, 1,3-diamino-4-nitrophenol, 1,3-diamino-4-chlorophenyl, 1,3-diamino-4-methylphenyl, 1-amino-3-(carboxy-aminomethyl)-phenyl, 1-(2-methylphenylamino)-3-hydroxyphenyl, 1-(4-methylphenyl-amino)-3-hydroxyphenyl, 1-amino-3-(carboxy-amino-methyl)-4-methyl-phenyl, 1-amino-3-aminocarbonyl-aminophenyl, 1-amino-3-(2-hydroxyethylamino)-phenyl, 1,8-diaminonaphthyl, 1-aminonaphthyl, 1-amino-8-acetonylamino-naphthyl, 1-amino-8-hydroxy-3,6-disulphonaphthyl, 1-acetylamino-8-hydroxy-3,6-disulphonaphthyl, 2-amino-8-hydroxy-6-sulphonaphthyl, 2-acetylamino-8-hydroxy-6-sulphonaphthyl, 1-benzoylamino-8-hydroxy-3,6-disulphonanphthyl, hydroxyphenyl, 1-hydroxy-2-methylphenyl, 1-hydroxy-3-methylphenyl, 1-hydroxy-2-chloro-phenyl, 1,3-dihydroxyphenyl, 1-hydroxy-2-carboxyphenyl, 1-hydroxy-2-carboxy-methylphenyl, and 1-hydroxy-2-carboxy-sulphophenyl;
- and
- D is phenyl;
- nitrophenyl;
- chlorophenyl;
- 2,4-, 2,5- or 3,4-dichlorophenyl;
- 4-methyl-phenyl, 2- or 4-carboxyphenyl;
- 4-methoxyphenyl;
- 4-benzoylaminophenyl;
- 4-acetylaminophenyl;
- 2,4-, 2,5 or 3,5-disulphophenyl;
- sulphophenyl;
- 4-chloro 2- or 3-sulphophenyl;
- 4-methyl 2- or 3-sulfophenyl;
- 4-nitro 2-sulphophenyl;
- 2 or 3-methoxysulphophenyl;
- 4-sulphonaphthyl-1;
- 5- or 6-sulphonaphthyl-2;
- 4,6- or 4,7-disulpho-naphthyl-1;
- 4,7- or 6,8-disulpho-naphthyl-2;
- 3,6,8- or 4,6,8-trisulphonaphthyl-2;
- 4-(4'-sulpho-phenyl)-azo-phenyl;
- 3-sulpho4-(4'-sulpho-phenyl)-azo-phenyl or 4-ethoxy-phenyl.
21 more elements
Dependencies are inferred from the claim text.