GB740272A - New chromiferous monoazo dyestuffs - Google Patents
New chromiferous monoazo dyestuffsInfo
- Publication number
- GB740272A GB740272A GB1209853A GB1209853A GB740272A GB 740272 A GB740272 A GB 740272A GB 1209853 A GB1209853 A GB 1209853A GB 1209853 A GB1209853 A GB 1209853A GB 740272 A GB740272 A GB 740272A
- Authority
- GB
- United Kingdom
- Prior art keywords
- chromium
- atoms
- specified
- amino
- dyestuffs
- 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
- C09B45/16—Monoazo compounds containing chromium
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Coloring (AREA)
Abstract
The invention comprises chromium complexes of compounds of formula: <FORM:0740272/IV(c)/1> where R is an alkyl group of 2-4 C atoms and X is an alkyl group of 1-4 C atoms, which contain 0.5-0.7, preferably 0.5, atoms of chromium per molecule of azo compound. The chromiferous dyestuffs may be made by treating the azo compound under weakly acid, neutral or alkaline conditions with the appropriate quantity of chromiumyielding agents. Preferably 0.5-0.6 atomic proportions of chromium-yielding agent are used per molecular proportion of azo compound. The azo compounds may be made by coupling a diazotized 2-amino-phenol carrying an SO2R group in the 4 position with an appropriate 1-carboalkoxyamino-7-naphthol. Specified diazo components are 2-amino - phenol-4-ethyl-,-isopropyl-,-propyl- and n-butyl-sulphone. Specified coupling components are 1-carbo-methoxy-ethoxy-, -n-butyloxy-and-isopropyloxy-amino-7-naphthol. Specified chromium-yielding agents are chromium sesquioxide, fluoride, chloride, formate and acetate, mixtures of chromium salts with alkali metal or ammonium salts of aliphatic hydroxy carboxylic acids, e.g., tartaric acid and ammonium - oxalato - aminochromate. The chroming reaction may be effected at elevated temperatures in aqueous media preferably in the presence of an organic solvent such as ethanol, n-butanol, ethylene glycol, b - ethoxyethanol, cyclohexanol, dimethylformamide, mono- and di-ethanolamine and pyridine. Chroming may also be effected with an alkali metal chromite and glycerol in an alkaline aqueous medium. Wetting or dispersing agents may be present. The dyestuffs dye wool and silk and synthetic proteins from neutral or weakly acid dyebaths. They dye wool in grey tints. They may be used for colouring lacquers, varnishes and plastic materials. Examples are provided of the preparation of dyestuffs using certain of the above specified components. Specification 667,168 is referred to. In the Provisional Specification the group -NH COOX is replaced by -NH COX where X is an alkyl group of 1-3 C atoms or an alkoxy group of 1-4 C atoms and 1-acetyl- and -propionyl-amino-7-naphthol are specified coupling components the former being coupled in Examples with 2-aminophenyl-4-ethyl- and -isopropyl-sulphone prior to chroming.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1209853A GB740272A (en) | 1953-05-01 | 1953-05-01 | New chromiferous monoazo dyestuffs |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1209853A GB740272A (en) | 1953-05-01 | 1953-05-01 | New chromiferous monoazo dyestuffs |
Publications (1)
Publication Number | Publication Date |
---|---|
GB740272A true GB740272A (en) | 1955-11-09 |
Family
ID=9998354
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1209853A Expired GB740272A (en) | 1953-05-01 | 1953-05-01 | New chromiferous monoazo dyestuffs |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB740272A (en) |
-
1953
- 1953-05-01 GB GB1209853A patent/GB740272A/en not_active Expired
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