GB678492A - New monoazo-dyestuffs of the pyrazolone series and process for their manufacture - Google Patents
New monoazo-dyestuffs of the pyrazolone series and process for their manufactureInfo
- Publication number
- GB678492A GB678492A GB27550/50A GB2755050A GB678492A GB 678492 A GB678492 A GB 678492A GB 27550/50 A GB27550/50 A GB 27550/50A GB 2755050 A GB2755050 A GB 2755050A GB 678492 A GB678492 A GB 678492A
- Authority
- GB
- United Kingdom
- Prior art keywords
- sulphonamide
- dyestuffs
- pyrazolones
- dyeing
- chloro
- 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
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
- C09B45/00—Complex metal compounds of azo dyes
- C09B45/02—Preparation from dyes containing in o-position a hydroxy group and in o'-position hydroxy, alkoxy, carboxyl, amino or keto groups
- C09B45/14—Monoazo compounds
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Coloring (AREA)
Abstract
The invention comprises monoazo-pyrazolone dyestuffs, free from carboxylic acid and sulphonic acid groups and of the formula <FORM:0678492/IV (c)/1> where R is a benzene residue containing a sulphonamide substituent -SO2-NR1R2 with or without other substituents, R1 and R2 being hydrogen, alkyl or hydroxyalkyl. These are made by coupling 4-nitro-6-chloro-2-aminophenol with the appropriate pyrazolones. Preferred compounds have R1 a radical of 1-4 carbon atoms and R2 hydrogen. The products can be used for dyeing and printing, and may be metallized in substance, in the dyebath or on the fibre. Examples show the use of the following substituted 1 - phenyl - 3 - methyl - 5 - pyrazolones as coupling components: 31-sulphonamide, 31-sulphomethylamide, 31-sulpho-b -oxyethylamide, 41-sulphonamide, 21-methyl-51-sulphonamide and 21-chloro-51-sulphonamide. Other components are listed. Further examples describe the dyeing of wool with the compounds by the after-chroming and metachrome processes. Specification 254,708, [Class 2 (iii)], is referred to.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH678492X | 1949-12-20 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB678492A true GB678492A (en) | 1952-09-03 |
Family
ID=4528301
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB27550/50A Expired GB678492A (en) | 1949-12-20 | 1950-11-10 | New monoazo-dyestuffs of the pyrazolone series and process for their manufacture |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB678492A (en) |
-
1950
- 1950-11-10 GB GB27550/50A patent/GB678492A/en not_active Expired
Similar Documents
Publication | Publication Date | Title |
---|---|---|
GB1021399A (en) | Monoazo disperse dyes | |
GB955313A (en) | Metal-containing reactive dyestuffs | |
GB679678A (en) | Improvements in or relating to the production of 3-amino pyrazolines | |
GB678492A (en) | New monoazo-dyestuffs of the pyrazolone series and process for their manufacture | |
ES344876A1 (en) | Procedure for the preparation of disazoic pigments. (Machine-translation by Google Translate, not legally binding) | |
GB830876A (en) | New acid anthraquinone dyestuffs | |
GB946998A (en) | Water-soluble monoazo dyestuffs | |
GB1095232A (en) | Process for the production of azo compounds | |
GB982479A (en) | New azo dyestuffs | |
GB988901A (en) | New azo dyestuffs | |
GB705959A (en) | Manufacture of new monoazodyestuffs | |
GB797046A (en) | New complex chromium compounds of benzene-monoazo-pyrazolone dyestuffs and process for making them | |
GB919424A (en) | New water-insoluble mono-azo dyestuffs of the benzthiazole-azo-benzene series | |
GB905321A (en) | Bis-azo dyes | |
GB692372A (en) | New chromiferous monoazo-dyestuffs and process for their manufacture | |
GB662645A (en) | Improvements in and relating to the preparation of sulphonic acid esters of bis-2-hydroxy-alkylarylamines | |
GB1004056A (en) | A new monoazo-dyestuff and a process for its manufacture | |
GB753573A (en) | New dyestuffs intermediates | |
GB705961A (en) | Manufacture of new monoazo-dyestuffs | |
GB773365A (en) | Manufacture of anti-diazotates | |
GB496735A (en) | Process for the manufacture of water-insoluble azo-dyestuffs in substance or on the fibre | |
GB660196A (en) | Manufacture of new monoazo-dyestuffs | |
GB710023A (en) | Improvements relating to copperable disazo dyestuffs | |
GB998870A (en) | Metallized azo dyestuffs | |
GB1096895A (en) | 1:2-chromium and cobalt complexes of dyes containing sulphonic acid groups |