CH287093A - 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
- CH287093A CH287093A CH287093DA CH287093A CH 287093 A CH287093 A CH 287093A CH 287093D A CH287093D A CH 287093DA CH 287093 A CH287093 A CH 287093A
- Authority
- CH
- Switzerland
- Prior art keywords
- chromium
- dye
- releasing
- azo dye
- complex
- 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 ehromhaltigen Azofarbstoffes. Es wurde gefunden, dass man zu einem wertvollen, neuen chromhaltigen Azofarbstoff gelangt, wenn inan auf den Monoazofarbstoff der Formel
EMI0001.0008
chromabgebende Mittel derart einwirken lässt, dass ein chromhaltiger Azofarbstoff entsteht, der zwei 1Tonoazofarbstoffmoleliüle an ein Cbromatom komplex gebunden enthält.
Der neue ehromltaltige Farbstoff bildet ein violettes Pulver, das sieh in Wasser mit. blauer, in konzentrierter Schwefelsäure mit roter Farbe löst und Wolle aus neutralem oder essigsaurem Bade in grauen Tönen färbt.
tFber die verwendeten chromabgebenden Mittel sowie über die Reaktionsbedingungen gibt das Hauptpatent. Auskunft.
Beispiel: 2-l,4 Teile 2-Amino-l-oxybenzol-l-sulfon- säure-N-n-butyiamid werden in 200 Teilen Wasser und 15 Volutnteilen 10-n-Salzsätlre auflesehlämmt und bei<B>5</B> bis 10 mit 25 Vo- lutnteilen 4-n-Natriumnitritlösung diazotiert. Die durch Zugabe von Natriumearbonat neu tralisierte Diazoverbindung lässt man einlau fen in eine mit Fis auf 0 abgekühlte Lösung von 20,
5 Teilen 1-Aeetylamino-7-oxy naphtha- lin in 5? Volumteilen 2-n-Natriumhy droxyd- lösung und 50 Volumteilen ?-n-Natriuincarbo- natlösung. Nach beendeter Kupplung wird der abgesehiedene Farbstoff filtriert und mit verdünnter Natritimehloridlösung gewaschen.
fxetroeknet stellt er ein blauviolettes Pulver dar, das sich in heissem Wasser mit roter -Lind in konzentrierter Schwefelsäure mit roter Farbe löst.
Der nach obigen Angaben erhaltene Fil- terliuehen 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 ehromsalieylsaurem Kalium-Natrium erhält man zum Beispiel durch Aufkoehen 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 Volumteilen 10-n-Natritim- hydroxydIösung und 15 Volumteilen 10-n-Ka- liumhydroxydlösung und Einstellen mit Was ser auf 200 Teile. Das Chromiergemiseh wird während etwa 5 Stunden bei Siedetemperatur gehalten und die so erhaltene Chromverbin dung des Farbstoffes durch Natriumehlorid- zugabe abgesehieden und abfiltriert.
Additional patent to main patent no. 284075. Process for the production of an azo dye containing Ehrom. It has been found that a valuable, new chromium-containing azo dye is obtained if the monoazo dye of the formula is used
EMI0001.0008
lets chromium-releasing agents act in such a way that a chromium-containing azo dye is formed which contains two 1-tonoazo dye molecules bound to a chromium atom in a complex.
The new genuine dye forms a purple powder that can be seen in water. blue, dissolves in concentrated sulfuric acid with red color and dyes wool from neutral or acetic acid bath in gray tones.
The main patent gives information on the chromium-releasing agents used and the reaction conditions. Information desk.
Example: 2-1.4 parts of 2-amino-1-oxybenzene-1-sulfonic acid-Nn-butyiamide are lamed in 200 parts of water and 15 parts by volume of 10N hydrochloric acid and measured at <B> 5 </B> to 10 is 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 20, which has been cooled to 0 with Fis.
5 parts of 1-acetylamino-7-oxy naphthalin in 5? Parts by volume of 2-n sodium hydroxide solution and 50 parts by volume of? -N sodium carbonate solution. After the coupling has ended, the separated dye is filtered and washed with dilute sodium chloride solution.
fxetroeknet, it is a blue-violet powder that dissolves in hot water with red lind in concentrated sulfuric acid with a red color.
The filter liquid of the dye obtained according to the above information is suspended in 1500 parts of water and mixed with 200 parts of a solution of chromium salicylic acid potassium-sodium with a chromium content of 1.85%.
The solution of Ehromsalieylsaurem 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 10-n-sodium hydroxide solution and 15 parts by volume of 10-n-potassium hydroxide solution and adjusting with water to 200 parts. The chromating mixture is kept at the boiling point for about 5 hours and the chromium compound of the dye thus obtained is separated off by adding sodium chloride and filtered off.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH287093T | 1949-11-18 | ||
CH284075T | 1949-11-18 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH287093A true CH287093A (en) | 1952-11-15 |
Family
ID=25732342
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH287093D CH287093A (en) | 1949-11-18 | 1949-11-18 | Process for the preparation of a chromium-containing azo dye. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH287093A (en) |
-
1949
- 1949-11-18 CH CH287093D patent/CH287093A/en unknown
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CH287093A (en) | Process for the preparation of a chromium-containing azo dye. | |
CH287092A (en) | Process for the preparation of a chromium-containing azo dye. | |
CH287089A (en) | Process for the preparation of a chromium-containing azo dye. | |
CH287090A (en) | Process for the preparation of a chromium-containing azo dye. | |
CH287113A (en) | Process for the preparation of a chromium-containing azo dye. | |
CH308400A (en) | Process for the preparation of a metal-containing azo dye. | |
CH287115A (en) | Process for the preparation of a chromium-containing azo dye. | |
CH287096A (en) | Process for the preparation of a chromium-containing azo dye. | |
CH287091A (en) | Process for the preparation of a chromium-containing azo dye. | |
CH287094A (en) | Process for the preparation of a chromium-containing azo dye. | |
CH287100A (en) | Process for the preparation of a chromium-containing azo dye. | |
CH287097A (en) | Process for the preparation of a chromium-containing azo dye. | |
CH303888A (en) | Process for the preparation of a metal-containing azo dye. | |
CH287086A (en) | Process for the preparation of a chromium-containing azo dye. | |
CH287098A (en) | Process for the preparation of a chromium-containing azo dye. | |
CH287095A (en) | Process for the preparation of a chromium-containing azo dye. | |
CH287114A (en) | Process for the preparation of a chromium-containing azo dye. | |
CH287107A (en) | Process for the preparation of a chromium-containing azo dye. | |
CH287099A (en) | Process for the preparation of a chromium-containing azo dye. | |
CH287088A (en) | Process for the preparation of a chromium-containing azo dye. | |
CH287116A (en) | Process for the preparation of a chromium-containing azo dye. | |
CH287085A (en) | Process for the preparation of a chromium-containing azo dye. | |
CH287105A (en) | Process for the preparation of a chromium-containing azo dye. | |
CH302386A (en) | Process for the preparation of a chromium-containing azo dye. | |
CH287109A (en) | Process for the preparation of a chromium-containing azo dye. |