CH287092A - Process for the preparation of a chromium-containing azo dye. - Google Patents
Process for the preparation of a chromium-containing azo dye.Info
- Publication number
- CH287092A CH287092A CH287092DA CH287092A CH 287092 A CH287092 A CH 287092A CH 287092D A CH287092D A CH 287092DA CH 287092 A CH287092 A CH 287092A
- Authority
- CH
- Switzerland
- Prior art keywords
- chromium
- dye
- process according
- containing azo
- azo dye
- Prior art date
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)
Description
Zusatzpatent zum Hauptpatent Nr. 284075. Verfahren zur Herstellung eines chromhaltigen Azofarbstoffes. Es wurde gefunden, dass man zti einem wertvollen, neuen chromhaltigen Azofarbstoff gelangt, wenn man auf den Monoazofarbstoff der Formel
EMI0001.0007
elironiabgebende -Mittel derart einwirken lässt, dass ein eliromhaltiger Azofarbstoff entsteht, der zwei llonoazofarbstoffmoleküle an ein Chromatom komplex gebunden enthält.
Der neue chromhaltige Farbstoff bildet ein schwarzes Pulver, das sieh in Wasser mit blau grauer, in konzentrierter Schwefelsäure mit roter Farbe löst. und Wolle aus neutralem oder essigsaurem Bade in ;rauen Tönen färbt.
Cber die verwendeten chromabgebenden Mittel sowie über die Reaktionsbedingungen nibt das Hauptpatent Auskunft.
<I>Beispiel:</I> 23,0 Teile '?-Amino-l-oxybeiizol-4-sulfon- säure-N-isopropylamid werden in 200 Teilen Wasser und 7.5 Volumteilen 10-n-Salzsäure aufgeschlämmt und bei 5 bis 10 mit 25 Vo- lumteilen 4-n-Natriumnitritlösung diazotiert. Die durch Zugabe von Natriiuncarbonat neu tralisierte Diazoverbindung lä-sst man einlau fen in eine mit Fis auf 0 abgekühlte Lösung von 22,
9 Teilen 1-n-Butyrylamino-7-oxvnaph- tha.lin in 52 Volumteilen 2-n-Natriumhydroxyd- l.ösung und 50 Volumteilen 2-n-Natriumcarbo- natlösung. Nach beendeter Kupplung ' wird der abgeschiedene Farbstoff. filtriert und mit verdünnter Natriumehloridläsung gewaschen. (=getrocknet stellt er ein violettes Pulver dar, das sich in heissem Wasser mit roter und in konzentrierter Schwefelsäure mit roter Farbe löst.
Der nach obigen Angaben erhaltene Filter kuchen des Farbstoffes wird in 1500 Teilen Wasser aufgeschlämmt und mit 200 Teilen einer Lösung von chromsalicylsaurem Kalium- Natrium mit einem Chromgehalt von 1,85% versetzt.
Die Lösung von ehromsalicylsaurem Kalium-Natrium erhält man zum Beispiel durch Aufkochen von 100 Teilen einer Chrom sulfatlösung (Cr-SO4OH) mit einem Chrom- gehalt von 3,7% mit 19,6 Teilen Salicylsäure,
Lösen des entstandenen Niederschlages durch Zugabe von 15 Voliunteilen 10-n-Natrium- hydroxydlösung und 15 Volumteilen 10-n-Ka- liumhydroxydlösiing und Einstellen mit 'Was ser auf 200 Teile. Das Chromiergemisch wird nährend etwa 5 Stunden bei Siedetemperatur gehalten und die so erhaltene Chromverbin dung des Farbstoffes durch Natriumchlorid- zugabe abgeschieden und abfiltriert.
Additional patent to main patent No. 284075. Process for the production of a chromium-containing azo dye. It has been found that one arrives at a valuable, new chromium-containing azo dye by using the monoazo dye of the formula
EMI0001.0007
Lets elironi-releasing agent act in such a way that an elirom-containing azo dye is formed which contains two llonoazo dye molecules bound to a chromium atom in a complex.
The new chromium-containing dye forms a black powder that dissolves in water with a blue-gray color, in concentrated sulfuric acid with a red color. and wool from neutral or acetic acid bath dyes in rough tones.
The main patent provides information on the chromium-releasing agents used and the reaction conditions.
<I> Example: </I> 23.0 parts of '? -Amino-1-oxybeiizole-4-sulfonic acid-N-isopropylamide are suspended in 200 parts of water and 7.5 parts by volume of 10N hydrochloric acid and at 5 to 10 diazotized with 25 parts by volume of 4N sodium nitrite solution. The diazo compound neutralized by adding sodium carbonate is allowed to run into a solution of 22, which has been cooled to 0 with Fis.
9 parts of 1-n-butyrylamino-7-oxynaphtha.lin in 52 parts by volume of 2-n sodium hydroxide solution and 50 parts by volume of 2-n sodium carbonate solution. After the coupling is complete, the deposited dye. filtered and washed with dilute sodium chloride solution. (= when dried it is a purple powder that dissolves in hot water with red and in concentrated sulfuric acid with red color.
The filter cake of the dye obtained according to the above information is suspended in 1500 parts of water and treated with 200 parts of a solution of chromium salicylic acid potassium-sodium with a chromium content of 1.85%.
The solution of Ehromsalicylsaurem potassium sodium is obtained, for example, by boiling 100 parts of a chromium sulfate solution (Cr-SO4OH) with a chromium content of 3.7% with 19.6 parts of salicylic acid,
Dissolve the resulting precipitate by adding 15 parts by volume of 10N sodium hydroxide solution and 15 parts by volume of 10N potassium hydroxide solution and adjusting to 200 parts with water. The chromating mixture is kept at the boiling point for about 5 hours and the chromium compound of the dye thus obtained is deposited by adding sodium chloride and filtered off.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH287092T | 1949-11-18 | ||
CH284075T | 1949-11-18 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH287092A true CH287092A (en) | 1952-11-15 |
Family
ID=25732341
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH287092D CH287092A (en) | 1949-11-18 | 1949-11-18 | Process for the preparation of a chromium-containing azo dye. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH287092A (en) |
-
1949
- 1949-11-18 CH CH287092D patent/CH287092A/en unknown
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CH287092A (en) | Process for the preparation of a chromium-containing azo dye. | |
CH308400A (en) | Process for the preparation of a metal-containing azo dye. | |
CH287090A (en) | Process for the preparation of a chromium-containing azo dye. | |
CH287095A (en) | Process for the preparation of a chromium-containing azo dye. | |
CH287089A (en) | Process for the preparation of a chromium-containing azo dye. | |
CH287094A (en) | Process for the preparation of a chromium-containing azo dye. | |
CH287096A (en) | Process for the preparation of a chromium-containing azo dye. | |
CH287097A (en) | Process for the preparation of a chromium-containing azo dye. | |
CH287091A (en) | Process for the preparation of a chromium-containing azo dye. | |
CH287100A (en) | Process for the preparation of a chromium-containing azo dye. | |
CH287093A (en) | Process for the preparation of a chromium-containing azo dye. | |
CH287115A (en) | Process for the preparation of a chromium-containing azo dye. | |
CH287113A (en) | Process for the preparation of a chromium-containing azo dye. | |
CH287086A (en) | Process for the preparation of a chromium-containing azo dye. | |
CH287114A (en) | Process for the preparation of a chromium-containing azo dye. | |
CH287088A (en) | Process for the preparation of a chromium-containing azo dye. | |
CH287099A (en) | Process for the preparation of a chromium-containing azo dye. | |
CH287085A (en) | Process for the preparation of a chromium-containing azo dye. | |
CH287098A (en) | Process for the preparation of a chromium-containing azo dye. | |
CH287110A (en) | Process for the preparation of a chromium-containing azo dye. | |
CH287103A (en) | Process for the preparation of a chromium-containing azo dye. | |
CH287107A (en) | Process for the preparation of a chromium-containing azo dye. | |
CH287111A (en) | Process for the preparation of a chromium-containing azo dye. | |
CH303888A (en) | Process for the preparation of a metal-containing azo dye. | |
CH302385A (en) | Process for the preparation of a chromium-containing azo dye. |