CH248705A - Process for the preparation of a copper-containing disazo dye. - Google Patents
Process for the preparation of a copper-containing disazo dye.Info
- Publication number
- CH248705A CH248705A CH248705DA CH248705A CH 248705 A CH248705 A CH 248705A CH 248705D A CH248705D A CH 248705DA CH 248705 A CH248705 A CH 248705A
- Authority
- CH
- Switzerland
- Prior art keywords
- copper
- disazo dye
- preparation
- dye
- containing disazo
- Prior art date
Links
Landscapes
- Coloring (AREA)
Description
'erfahren zur Herstellung eines kupferhaltigen Disazofarbstoffes. Gegenstand des vorliegenden Zusatz patentes ist ein Verfahren zur Herstellung eines kupferhaltigen Disazofarbstoffes, da durch gekennzeichnet, dass der Disazofarb- stoff [2,8-Dioxynaphthalin-6-sulfonsäurel- (1-azo-4)- [3,3'-dimethoxy-diphenyl]-(4'-azo- 2)-[1-oxynaphthalin-4,8-disulfonsäure] mit kupferabgebenden Mitteln behandelt wird.
Der neue, kupferhaltige Farbstoff färbt die, Cellulosefaser in blauen Tönen. <I>Beispiel:</I> Man stellt in an sich bekannter Weise den asymmetrischen Disazofarbstoff aus 61 Teilen 4,4'-Diamino-3,3'-dimethoxy-diphenyl, 60 Teilen 2,8-Dioxynaphthalin-6-sulfonsäure und 76 Teilen 1-Oxynaphthalin-4,8-disulfon- säure dar.
Der abfiltrierte Disazofarbstoff wird in der 10fachen Menge heissem Wasser unter Zusatz von 50 Vol.-Teilen 23%iger Ammoniaklösung gelöst. Man erwärmt auf 85-90 und versetzt allmählich mit einer Lösung von 150 Teilen krist. Kupfersulfat in überschüssigem Ammoniak. Man hält die Temperatur unter Rühren während 12 Stun- den bei 85-90 .
Nach dem Erkalten wird die neue Kupferkomplexverbindung durch Aussadzen abgeschieden, abfiltriert, mit 10%iger Kochsalzlösung gewaschen und dann getrocknet.
Der neue Farbstoff bildet ein violett schwarzes Pulver, das sich in heissem Wasser mit grünstichig blauer, in konz. Schwefel säure mit grünstichig blauer Farbe löst.
Die Cellulosefaser wird in blauen Tönen gefärbt.
'Learn about the production of a copper-containing disazo dye. The subject of the present additional patent is a process for the production of a copper-containing disazo dye, characterized in that the disazo dye [2,8-dioxynaphthalene-6-sulfonic acid- (1-azo-4) - [3,3'-dimethoxy- diphenyl] - (4'-azo-2) - [1-oxynaphthalene-4,8-disulfonic acid] is treated with copper donors.
The new, copper-containing dye dyes the cellulose fiber in blue tones. <I> Example: </I> The asymmetrical disazo dye is prepared in a manner known per se from 61 parts of 4,4'-diamino-3,3'-dimethoxy-diphenyl, 60 parts of 2,8-dioxynaphthalene-6-sulfonic acid and 76 parts of 1-oxynaphthalene-4,8-disulfonic acid represent.
The filtered disazo dye is dissolved in 10 times the amount of hot water with the addition of 50 parts by volume of 23% ammonia solution. The mixture is heated to 85-90 and gradually mixed with a solution of 150 parts of crystalline. Copper sulfate in excess ammonia. The temperature is kept at 85-90 for 12 hours with stirring.
After cooling, the new copper complex compound is precipitated by salting out, filtered off, washed with 10% sodium chloride solution and then dried.
The new dye forms a violet-black powder that turns greenish blue in hot water, in conc. Sulfuric acid dissolves with a greenish blue color.
The cellulose fiber is dyed in blue tones.
Claims (1)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH244051T | 1945-03-22 | ||
| CH248705T | 1945-03-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH248705A true CH248705A (en) | 1947-05-15 |
Family
ID=25728902
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH248705D CH248705A (en) | 1945-03-22 | 1945-03-22 | Process for the preparation of a copper-containing disazo dye. |
Country Status (1)
| Country | Link |
|---|---|
| CH (1) | CH248705A (en) |
-
1945
- 1945-03-22 CH CH248705D patent/CH248705A/en unknown
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