GB693757A - Manufacture of an intermediate product and of azo dyestuffs derived therefrom - Google Patents
Manufacture of an intermediate product and of azo dyestuffs derived therefromInfo
- Publication number
- GB693757A GB693757A GB12385/50A GB1238550A GB693757A GB 693757 A GB693757 A GB 693757A GB 12385/50 A GB12385/50 A GB 12385/50A GB 1238550 A GB1238550 A GB 1238550A GB 693757 A GB693757 A GB 693757A
- Authority
- GB
- United Kingdom
- Prior art keywords
- aminophenol
- nitro
- wool
- acid
- naphthol
- 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)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Coloring (AREA)
Abstract
The invention comprises g -(4-hydroxy-1-naphthyl)-butyric acid, which can be prepared by (1) reacting a -naphthol with a derivative of succinic acid, e.g. anhydride or chloride, or (2) dealkylating an alkyl ether thereof (especially methyl or ethyl) with aqueous alkali hydroxide at 100 DEG C. or higher, e.g. 130-160 DEG C. The alkyl ethers are made by condensing ethers of a -naphthol with succinic anhydride in the presence of aluminium chloride. In the examples: (1) a -naphthol is heated with succinic anhydride and aluminium chloride in tetrachlorethane; (2) g -(4-methoxy-1-naphthyl)-butyric acid is heated to 140-145 DEG C. with aqueous sodium hydroxide. The product is a coupling component for azo dyes (see Group IV (c)).ALSO:Azo dyes are made by coupling a diazotized o - hydroxyamine with g - (4 - hydroxy - 1-naphthyl)-butyric acid, followed if desired by metallization in substance, in the dyebath or on the fibre. The diazo components may contain a benzene, naphthalene, anthraquinone or heterocyclic nucleus. The metal-free dyestuffs are suitable for dyeing and printing fibres of wool, silk, casein, superpolyamides and animalized cellulose. Those not containing sulphonic acid groups may be applied to wool by the metachrome process, or the wool dyeings may be after-treated with agents providing copper, chromium or cobalt. Difficultly soluble copper, chromium and cobalt compounds produced in substance may be used as pigments. In the examples, dyestuffs are made from the following diazo components: 5-nitro-2-aminophenol, 5 - nitro - 3 - aminosalicylic acid, 6 - nitro - 2-aminophenol - 4 - sulphonic acid, 2 - aminophenol - 4 - sulphonamide and 2 - aminophenol-4 : 6-disulphonic acid (coppered). In further examples: (1) wool is dyed blue by the metachrome process using the dyestuff from 5-nitro-4-chloro-2-aminophenol; (2) wool is dyed red by using the dyestuff from 2-aminophenol - 4 - sulphonamide and coppering in the dyebath; (3) wool is dyed violet-brown by the metachrome process with the dyestuff from 5-nitro - 2 - aminophenol. 4 - Nitro - 2 - aminophenol is also specified as a diazo component.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH693757X | 1949-05-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB693757A true GB693757A (en) | 1953-07-08 |
Family
ID=4529455
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB12385/50A Expired GB693757A (en) | 1949-05-19 | 1950-05-17 | Manufacture of an intermediate product and of azo dyestuffs derived therefrom |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB693757A (en) |
-
1950
- 1950-05-17 GB GB12385/50A patent/GB693757A/en not_active Expired
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US2427537A (en) | Disazo dyes from tetrazotized dihydroxy benzidines | |
| GB851861A (en) | Improvements relating to heavy metal-containing azo dyestuffs and their use | |
| GB693757A (en) | Manufacture of an intermediate product and of azo dyestuffs derived therefrom | |
| US2391137A (en) | Monoazo hetero-oxygen compounds | |
| US2034305A (en) | Azo dyestuffs and their production | |
| US2529527A (en) | Copper complex compounds of substantive azo dyestuffs and a process of making same | |
| GB883550A (en) | New triazine disazo dyestuffs and their manufacture and use | |
| US2025991A (en) | Azo dyestuffs and their production | |
| US2111270A (en) | Metalliferous azo dyestuffs and a process for producing same | |
| US2034304A (en) | Azo dyestuffs and their production | |
| US2480006A (en) | Azo dyestuffs | |
| US2226675A (en) | Azo dyestuffs and process of producing same | |
| GB595181A (en) | Manufacture of new azo-dyestuffs | |
| GB840898A (en) | Improvements relating to metallisable polyazo dyestuffs derived from 1-amino-8-naphthol-6-sulphonic acid, complex copper compounds thereof, and their use | |
| US2005848A (en) | Water insoluble azo dyestuff containing a benzanthrone nucleus | |
| US1916107A (en) | Azo dyestuff and process of making same | |
| US2043199A (en) | Azo dyestuffs and their production | |
| GB654744A (en) | Manufacture of new trisazo-dyestuffs | |
| GB457525A (en) | Improvements in the manufacture and production of valuable azo dyestuffs | |
| GB578537A (en) | Process for the preparation of metallisable polyazo dyestuffs | |
| GB459949A (en) | Process for the manufacture of o-hydroxyazo dyestuffs | |
| GB778233A (en) | New tetrakisazo-dyestuffs and process for making them | |
| GB728259A (en) | Process for the preparation of metallisable o-hydroxymonoazo dyestuffs and of their metal complex compounds | |
| GB560451A (en) | Manufacture of azo-dyestuffs | |
| GB687253A (en) | Improvements relating to chromium containing monoazo dyestuffs |