GB793136A - Improvements in the production of mono- and dis-azo dyestuffs containing chromium - Google Patents
Improvements in the production of mono- and dis-azo dyestuffs containing chromiumInfo
- Publication number
- GB793136A GB793136A GB629356A GB629356A GB793136A GB 793136 A GB793136 A GB 793136A GB 629356 A GB629356 A GB 629356A GB 629356 A GB629356 A GB 629356A GB 793136 A GB793136 A GB 793136A
- Authority
- GB
- United Kingdom
- Prior art keywords
- amino
- methyl
- naphthol
- sulphonamide
- methoxy
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Chromium - containing o : o1 - dihydroxy - azo dyestuffs which contain two identical or different dyestuff molecules for each chromium atom are prepared by treating an o-alkoxy-o1-hydroxy-azo dyestuff or a mixture of two or more dyestuffs of the said kind at an elevated temperature and in the presence of an organic solvent, with compounds of hexavalent chromium and with reduction of the chromium compounds. A solvent having a reducing action on the chromium compounds is preferably used. Specified solvents are mono- and polyhydric alcohols and their esters and ethers, dioxan tetrahydrofuran, butyrolactone, ethanolamine and carboxylic acid amides. Substances which may be used to reduce the chromium compounds are salts and esters of sulphurous, thiosulphuric or arsenious acids and mono- and di-saccharides. Specified compounds of bevalent chromium are alkali metal mono- and dichromates. In an example the dyestuff 1-amino - 2 - methoxy - 5 - methyl - benzene - 4 - sulphonamide --> 1 - phenyl - 3 - methyl - 5 - pyrazolone is mixed with b : b 1-dihydroxyethyl ether and sodium chromate, heated, diluted with water and the chromium complex salted out. Azo dyestuffs prepared from the following components are treated in a similar manner to give their chromium complexes: diazo components: 1 - amino - 2 - methoxybenzene, 1 - amino - 2 - methoxy - 5 - chloro - or - methyl - benzene, 1 - amino - 2 - methoxy - 4 - or - 5 - nitrobenzene, 1 - amino - 2 - methoxy - 4 - nitro - 5 - chloro - benzene, 1 - amino - 2:4 - or - 2:5 - dimethoxybenzene, 1 - amino - 2:5 - diethoxybenzene, 1 - amino - 2 - methoxy - 4 - chloro - 5 - methylbenzene, 1-amino-2:4- or -2:5-dimethoxy - 4 - chlorobenzene, 1 - amino - 2 - methoxy - 4 - phenylamino - benzene, 1 - amino - 2 - methoxybenzene - 5 - carbonamide or -sulphonamide or -sulphomethylamide or -sulphophenylamide or -sulphodiethylamide or -sulpho-(31- or 41-sulphonamido-phenyl)-amide or -methyl or -benzyl sulphone, 1-amino-2-methoxy-5-methylbenzene-4-sulphonamide or -sulphomethylamide or -sulphophenylamide or -sulpho-N-ethyl-N-(21-hydroxy)-ethyl-amide or -methyl sulphone, 1 - amino - 2 - methoxy - 5 - chlorobenzene - 4 - ethylsulphone or-sulphonamide or -sulphomethylamide or -sulphophenylamide, 1-amino-2:5 - dimethoxy - 4 - benzoylaminobenzene, 1 - amino - 2:5 - diethoxy - 4 - acetylaminobenzene, 1 - amino - 2:5 - dimethoxybenzene - 4 - sulphonamide or -sulphomethylamide or -methyl sulphone, 1-amino-2:5-diethoxybenzene - 4 - sulphonamide or -sulphophenylamide, 1 - amino - 2 - ethoxy - naphthalene, 1 - amino - 2 - methoxy - 4 - (41 - sulphonamido - phenylazo) - 5 - methylbenzene and 1 - amino - 2:5 - dimethoxy - 4 - (31 - sulphonamido - phenylazo)-benzene; coupling components:-4 -methyl- or -acetylamino- or -isobutylphenol, 2:4-dichlorophenol, 2-naphthol, 2-naphthol-6-sulphonamide or -sulphophenylamide or -sulpho-N-(21-hydroxy)-ethylamide or -sulphodimethylamide or -sulpho-N-methyl-N-(21-hydroxy)-ethylamide, 2-naphthol-4-sulphonamide or -sulphomethylamide or -sulphophenylamide, 2-naphthol-7-sulphonamide, 2-naphthol-5-sulphomethylamide, 1-naphthol-3- or -4-sulphonamide, 1-naphthol-3:6-disulphonamide or -disulphomethylamide, 2-naphthol-3:6-disulphonamide, 6-bromo-2-naphthol, 5:8-dichloro-1-naphthol, 8-acetylamino- or -carbomethoxyamino-2-naphthol, 1-phenyl- or -(21-methylphenyl)- or -(31- or 41-sulphamidophenyl)- or -(41-methyl-31-sulphamidophenyl)- or -(31- or 41-methylsulphonylphenyl)- or -(21-chloro-51-sulphonamidophenyl)-or -(21:51-dichlorophenyl)- or -(31-chloro- or - nitro - phenyl) - or - (41 - benzenesulphaminophenyl) - 3 - methyl - 5 - pyrazolone, 1 - phenyl - 3-carboethoxy- or -carbonamido-5-pyrazolone, 3 - methyl - 5 - pyrazolone, 1:3 - diphenyl - 5 - pyrazolone, 2:4 - dihydroxyquinoline and 1 - methyl - 4 - hydroxy - quinolone (2). Specification 758,016 is referred to.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB629356A GB793136A (en) | 1956-02-29 | 1956-02-29 | Improvements in the production of mono- and dis-azo dyestuffs containing chromium |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB629356A GB793136A (en) | 1956-02-29 | 1956-02-29 | Improvements in the production of mono- and dis-azo dyestuffs containing chromium |
Publications (1)
Publication Number | Publication Date |
---|---|
GB793136A true GB793136A (en) | 1958-04-09 |
Family
ID=6708849
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB629356A Expired GB793136A (en) | 1956-02-29 | 1956-02-29 | Improvements in the production of mono- and dis-azo dyestuffs containing chromium |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB793136A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3051696A (en) * | 1960-03-23 | 1962-08-28 | Du Pont | Chromation of azo dyes |
-
1956
- 1956-02-29 GB GB629356A patent/GB793136A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3051696A (en) * | 1960-03-23 | 1962-08-28 | Du Pont | Chromation of azo dyes |
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