GB653525A - Manufacture of a complex chromium compound of a monazo dyestuff - Google Patents
Manufacture of a complex chromium compound of a monazo dyestuffInfo
- Publication number
- GB653525A GB653525A GB174/48A GB17448A GB653525A GB 653525 A GB653525 A GB 653525A GB 174/48 A GB174/48 A GB 174/48A GB 17448 A GB17448 A GB 17448A GB 653525 A GB653525 A GB 653525A
- Authority
- GB
- United Kingdom
- Prior art keywords
- chromium
- dyeing
- fibres
- chromium compound
- artificial
- 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
A complex chromium compound is manufactured by treating the azo dyestuff 1-amino-2-naphthol-4-sulphonic acid -->1-naphthol-5-sulphonic acid at a raised temperature with an amount of a salt of trivalent chromium sufficient to produce a chromium compound containing in the dyestuff molecule about one atom of chromium in complex union. Suitable chromium salts are the fluoride, sulphates, acetate and formate, and the treatment therewith may be carried out under atmospheric or superatmospheric pressure, advantageously in an acid medium. The product is suitable for dyeing materials of animal character (e.g. casein and gelatine), and especially for dyeing or printing animal textile fibres (e.g. wool or silk) and leather, also fibres possessing similar dyeing properties (e.g. artificial staple fibres of casein, or animalized cellulose artificial silk), and artificial fibres of superpolyamides or superpolyurethanes, yielding blue to navy-blue tints. Examples describe the preparation of the chromium compound and the dyeing of wool therewith. Specification 365,113 and French Specification 850,530 are referred to.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH653525X | 1945-01-12 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB653525A true GB653525A (en) | 1951-05-16 |
Family
ID=4526309
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB174/48A Expired GB653525A (en) | 1945-01-12 | 1948-01-02 | Manufacture of a complex chromium compound of a monazo dyestuff |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB653525A (en) |
-
1948
- 1948-01-02 GB GB174/48A patent/GB653525A/en not_active Expired
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