CH248702A - 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
- CH248702A CH248702A CH248702DA CH248702A CH 248702 A CH248702 A CH 248702A CH 248702D A CH248702D A CH 248702DA CH 248702 A CH248702 A CH 248702A
- Authority
- CH
- Switzerland
- Prior art keywords
- copper
- disazo dye
- dye
- preparation
- containing disazo
- Prior art date
Links
Landscapes
- Coloring (AREA)
Description
Verfahren 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-DioxynaphthaIin-6-sulfonsäurel- (1-a.zo-4)- [3,3'-dimethoxy-diphenyl]-(4'-azo- 6) - C2-phenylamino-5-oxynaphthalin- 4',
7 -di- suifonsäure] mit kupferabgebenden Mitteln behandelt wird.
Der neue, kupferhaltige Farbstoff färbt die Cellulosefaser in violettblauen Tönen. Beispiel: Man stellt in an sich bekannter Weise den asymmetrischen Disazofarbstoff aus 61 Teilen 4,4'-Dia.mino-3,3'-dimethoxy-diphenyl, 60 Teilen 2,8-Dioxynaphthalin-6-sulfonsäure und 100 Teilen 2-Phenylamino-5-oxynaph- tha.lin-4',7-disulfonsäure dar.
Der abfiltrierte Disazofa.rbstoff wird in der 10fachen Menge heissem Wasser unter Zusatz von 50 Vol.- Teilen 23%iger Ammoniaklösung gelöst. Man erwärmt auf 85-90 und versetzt all mählich mit einer Lösung von 150 Teilen krist. Kupfersulfat in überschüssigem Am- moniak. Man hält die Temperatur unter Rühren während 12 Stunden bei 85-90 .
Nach dem Erkalten wird die neue Kupfer komplexverbindung durch Aussalzen abge schieden, abfiltriert, mit 10%iger Kochsalz lösung gewaschen und dann getrocknet.
Der neue Farbstoff bildet ein violett- schwarzes Pulver, das sich in heissem Wasser mit blaustichig violetter, in konz. Schwefel säure mit blauoliver Farbe löst.
Die Cellulosefaser wird in violettblauen Tönen gefärbt.
Process for the preparation 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-a.zo-4) - [3,3'- dimethoxy-diphenyl] - (4'-azo- 6) - C2-phenylamino-5-oxynaphthalene-4 ',
7 -disulfonic acid] is treated with copper-releasing agents.
The new, copper-containing dye dyes the cellulose fiber in violet-blue tones. Example: The asymmetric disazo dye is prepared in a manner known per se from 61 parts of 4,4'-dia.mino-3,3'-dimethoxy-diphenyl, 60 parts of 2,8-dioxynaphthalene-6-sulfonic acid and 100 parts of 2-phenylamino -5-oxynaph- tha.lin-4 ', 7-disulfonic acid.
The filtered disazofa 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 deposited by salting out, filtered off, washed with 10% sodium chloride solution and then dried.
The new dye forms a violet-black powder, which in hot water becomes bluish violet, in conc. Sulfuric acid dissolves with blue-olive color.
The cellulose fiber is dyed in violet-blue tones.
Claims (1)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH244051T | 1945-03-22 | ||
| CH248702T | 1945-03-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH248702A true CH248702A (en) | 1947-05-15 |
Family
ID=25728899
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH248702D CH248702A (en) | 1945-03-22 | 1945-03-22 | Process for the preparation of a copper-containing disazo dye. |
Country Status (1)
| Country | Link |
|---|---|
| CH (1) | CH248702A (en) |
-
1945
- 1945-03-22 CH CH248702D patent/CH248702A/en unknown
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