GB967011A - New chromium complex azo dyestuff - Google Patents
New chromium complex azo dyestuffInfo
- Publication number
- GB967011A GB967011A GB1424462A GB1424462A GB967011A GB 967011 A GB967011 A GB 967011A GB 1424462 A GB1424462 A GB 1424462A GB 1424462 A GB1424462 A GB 1424462A GB 967011 A GB967011 A GB 967011A
- Authority
- GB
- United Kingdom
- Prior art keywords
- chromium
- naphthol
- mixture
- chromium complex
- nitro
- 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 the 2: 1 chromium complex of an equimolar mixture of the monoazo dye from 1-amino-6-nitro-2-naphthol-4-sulphonic acid and 2-naphthol and of the monoazo dye from diazotized 2-amino-4-nitro-5-chlorphenol and 2-naphthol, and a process for the preparation thereof wherein a 1: 1-mixture of the appropriate azo dyes is treated at an elevated temperature with a chromium-yielding agent, less than 1 mol. of chromium yielding agent being used per mol. of dyestuff. In the example the mixture of unmetallized dyes is heated with aqueous ammonia and treated with an aqueous chromium salicylate solution containing chromium alum. The dye complex is suitable for dyeing wool and other animal fibres and polyamides.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1424462A GB967011A (en) | 1962-04-12 | 1962-04-12 | New chromium complex azo dyestuff |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1424462A GB967011A (en) | 1962-04-12 | 1962-04-12 | New chromium complex azo dyestuff |
Publications (1)
Publication Number | Publication Date |
---|---|
GB967011A true GB967011A (en) | 1964-08-19 |
Family
ID=10037642
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1424462A Expired GB967011A (en) | 1962-04-12 | 1962-04-12 | New chromium complex azo dyestuff |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB967011A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0157733A1 (en) * | 1984-03-08 | 1985-10-09 | Ciba-Geigy Ag | Method for the preparation of 1:2-chromium complex azo-dyestuffs |
US4904767A (en) * | 1982-05-14 | 1990-02-27 | Ciba-Geigy Corporation | Asymmetric 1:2-chrome complexes of benzene-azo-naphthalene/naphthalene-azo-naphthalene acid dyes for leather |
US4997917A (en) * | 1984-03-08 | 1991-03-05 | Ciba-Geigy Corporation | Preparation of 1:2 chromium complex azo dyes asymmetrically substituted with solubilizing |
US5229502A (en) * | 1989-02-23 | 1993-07-20 | Ciba-Geigy Corporation | Preparation of 1:2 chromium complexes one sulfo substituted and one sulfonamido or the like substituted azo dyes |
-
1962
- 1962-04-12 GB GB1424462A patent/GB967011A/en not_active Expired
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4904767A (en) * | 1982-05-14 | 1990-02-27 | Ciba-Geigy Corporation | Asymmetric 1:2-chrome complexes of benzene-azo-naphthalene/naphthalene-azo-naphthalene acid dyes for leather |
EP0157733A1 (en) * | 1984-03-08 | 1985-10-09 | Ciba-Geigy Ag | Method for the preparation of 1:2-chromium complex azo-dyestuffs |
US4933437A (en) * | 1984-03-08 | 1990-06-12 | Ciba-Geigy Corporation | Preparation of 1:2 chromium complex azo dyes asymmetrically substituted with solubilizing groups |
US4997917A (en) * | 1984-03-08 | 1991-03-05 | Ciba-Geigy Corporation | Preparation of 1:2 chromium complex azo dyes asymmetrically substituted with solubilizing |
US5229502A (en) * | 1989-02-23 | 1993-07-20 | Ciba-Geigy Corporation | Preparation of 1:2 chromium complexes one sulfo substituted and one sulfonamido or the like substituted azo dyes |
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