CH294237A - 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
- CH294237A CH294237A CH294237DA CH294237A CH 294237 A CH294237 A CH 294237A CH 294237D A CH294237D A CH 294237DA CH 294237 A CH294237 A CH 294237A
- Authority
- CH
- Switzerland
- Prior art keywords
- copper
- disazo dye
- preparation
- mol
- parts
- Prior art date
Links
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- Coloring (AREA)
Description
Verfahren zur Herstellung eines kupferhaltigen Disazofarbstoffes. Gegenstand vorliegenden Patentes ist ein Verfahren zur Herstellung eines kupferhal tigen Disazofarbstoffes. Das Verfahren ist dadurch gekennzeichnet, dass man 1 Mol tetra- zotiertes 4,4'-Diamino-3,3'-dimethoxy-diphen @-1 in beliebiger Reihenfolge nacheinander mit 1 Mol 1-Oxy-naphthalin-3,8-disttlfonsäure und 1 3-o1 2- (4'-Benzoylamino-phenylamino)
-5- oxy-naphthalin-7-sulfonsäure kuppelt und den erhaltenen Disazofarbstoff mit kupferabgeben den -Mitteln behandelt.
Der erhaltene neue Farbstoff stellt ein dunkles Pulver dar, das sich in -Wasser mit blauer Farbe löst und Cellulosefasern in leb haften blauen Tönen .färbt.
<I>Beispiel:</I> Zu der Zwischenverbindung aus 24,4 Tei len tetrazotiertem o-Dianisidin und 30,4 Teilen 1-Oxy-naphthalin-3,8-disulfonsäure wird eine sodaalkalische Lösung von 43,5 Teilen 2-(4' Benzoylamino-phenylamino)-5-oxy-naphthalin- 7-sulfonsäure zugegeben und bis zur Beendi gung der Farbstoffbildung verrührt.
Der Disazofarbstoff wird in 2500 Teilen Wasser bei 80 bis 85 gelöst und bei dieser Temperatur 400 Teile einer Kupferoxydammo- niaklösung, die 50 Teile krist. Kupfersulfat und 120 Teile konz. wässrigen Ammoniak ent hält, zugefügt. Es wird 4 bis 5 Stunden auf 80 bis 85 erhitzt und nach Zufügen von wei teren 50 Teilen einer konz. Ammoniaklösung 15 bis 20 Stunden auf 90 bis 95 erhitzt. Der gebildete Kupferkomplex wird mit Kochsalz ausgefällt, filtriert und getrocknet.
Er stellt ein dunkles Pulver dar, das sieh in Wasser mit blauer Farbe löst und Cellulosefasern in leb haften blauen Tönen von guter Lichtechtheit und guter Nasseehtheit färbt.
Process for the preparation of a copper-containing disazo dye. The present patent is a process for the preparation of a kupferhal term disazo dye. The process is characterized in that 1 mol of tetrazotized 4,4'-diamino-3,3'-dimethoxy-diphen @ -1 is added in any order in succession with 1 mol of 1-oxynaphthalene-3,8-distulfonic acid and 1 3-o1 2- (4'-benzoylamino-phenylamino)
-5- oxy-naphthalene-7-sulfonic acid couples and the disazo dye obtained is treated with copper-releasing agents.
The new dye obtained is a dark powder that dissolves in water with a blue color and dyes cellulose fibers in vivid blue tones.
<I> Example: </I> To the intermediate compound of 24.4 parts of tetrazotized o-dianisidine and 30.4 parts of 1-oxynaphthalene-3,8-disulfonic acid, an alkaline soda solution of 43.5 parts of 2- ( 4 'Benzoylamino-phenylamino) -5-oxy-naphthalene-7-sulfonic acid was added and the mixture was stirred until the dye formation was complete.
The disazo dye is dissolved in 2500 parts of water at 80 to 85 and at this temperature 400 parts of a copper oxide ammonia solution, the 50 parts of crystalline. Copper sulfate and 120 parts of conc. containing aqueous ammonia, added. It is heated to 80 to 85 hours for 4 to 5 hours and, after adding more white 50 parts of a conc. Ammonia solution heated to 90 to 95 for 15 to 20 hours. The copper complex formed is precipitated with common salt, filtered and dried.
It is a dark powder that dissolves in water with a blue color and dyes cellulose fibers in vivid blue shades of good lightfastness and good wetness.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH294237T | 1951-02-07 | ||
CH291510T | 1951-02-07 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH294237A true CH294237A (en) | 1953-10-31 |
Family
ID=25733118
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH294237D CH294237A (en) | 1951-02-07 | 1951-02-07 | Process for the preparation of a copper-containing disazo dye. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH294237A (en) |
-
1951
- 1951-02-07 CH CH294237D patent/CH294237A/en unknown
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