CH301446A - 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
- CH301446A CH301446A CH301446DA CH301446A CH 301446 A CH301446 A CH 301446A CH 301446D A CH301446D A CH 301446DA CH 301446 A CH301446 A CH 301446A
- Authority
- CH
- Switzerland
- Prior art keywords
- copper
- disazo dye
- oxy
- acid
- mol
- 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
- C09B33/00—Disazo and polyazo dyes of the types A->K<-B, A->B->K<-C, or the like, prepared by diazotising and coupling
- C09B33/02—Disazo dyes
- C09B33/08—Disazo dyes in which the coupling component is a hydroxy-amino compound
- C09B33/10—Disazo dyes in which the coupling component is a hydroxy-amino compound in which the coupling component is an amino naphthol
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Coloring (AREA)
Description
Verfahren zur Herstellung eines kupferhaltigen Disazofarbstoffes. Gegenstand des vorliegenden Patentes ist ein Verfahren zur Herstellung eines kupfer haltigen Disazofarbstoffes, welches darin b;
- steht, dass man 1 Mol der Diazoverbindung aus 2-Amino-l-oxy-6-chlorbenzol-4-sulfonsäure und 1 Mol der Diazoverbindung aus 2-Amino- benzol-l-earbonsäure mit. 1 Mol Pumarsäure- di-[5-oxy-7-sulfonaphthyl-(2) ]-amid kuppelt und die erhaltene Disazoverbindung mit einem kupferabgebenden Mittel behandelt.
Im nachfolgenden Beispiel bedeuten die Teile Gewichtsteile, und die Prozente sind in (iewiehtsprozenten angegeben.
Beispiel: '?2,:) Teile ?-Amino-l-oxy-6-clilorbenzol- 4-sulfonsäure werden diazotiert. Man -iesst die erhaltene Diazolösung langsam in eine Lösung von 55,8 Teilen Fumarsäure-di- 1 5-oxy-7-sulfonaphthyl-(2) ]-amid und 30 Tei len Natriumcarbonat in 1200 Teilen Wasser.
:lach etwa 24 Stunden ist die Kupplung zum 3lonoazofarbstoff beendigt. Die Lösung wird nun mit 150 Teilen 20 /oiger Natrium- earbonat1äsung versetzt und mit, einer Diazo- lösunaus 14 Teilen 2-Aminobenzol-l-carboii- säüre vereinigt. Die Kupplung zum Disazo- farbstoff benötigt etwa ? Stunden.
Der Disa.zofarbstoff wird hierauf aus der Reak tionslösung ausgesalzt und. anschliessend ab- filtriert.
Zur Überführung in die in Substanz vor liegende Kupferkomplexverbindung löst man 94, Teile des Disazofarbstoffes bei 80 bis 8:i^ in 1500 Teilen Wasser und setzt der Lösung 60 Teile kristallisiertes Natriumacetat zu. Darauf lässt man ihr 250 Teile einer 20 o/oigen wässrigen Lösung aus kristallisiertem Kupfer sulfat zulaufen und hält sie noch eine Stunde bei 80 bis 85 .
Anschliessend wird die Metalli- sierungslösung durch Zugabe von Natrium- earbonat alkalisch gestellt, der kupferhaltige Disazofarbstoff ausgesalzt, abfiltriert und ge trocknet.
Der neue kupferhaltige Disazofarbstoff ist ein dunkles Pulver, das sich in konzentrierter Schwefelsäure mit roter Farbe löst und Baum wolle und Fasern aus regenerierter Cellulose in bordeauxroten Tönen von sehr guter Licht- eehtheit und guter Waschechtheit färbt. Durch Nachbehandeln auf der Faser mit Kupfersalzen in Gegenwart eines Polyal- kylenpolyamins werden die Nasseehtheits- eigenschaften der Färbungen noch verbessert,
Process for the preparation of a copper-containing disazo dye. The present patent relates to a process for the preparation of a copper-containing disazo dye, which therein b;
- Stands that 1 mol of the diazo compound from 2-amino-1-oxy-6-chlorobenzene-4-sulfonic acid and 1 mol of the diazo compound from 2-amino-1-oxy-acid with. 1 mol of pumaric acid di- [5-oxy-7-sulfonaphthyl- (2)] -amide is coupled and the disazo compound obtained is treated with a copper-releasing agent.
In the following example, the parts are parts by weight, and the percentages are given in weight percentages.
Example: '? 2, :) parts of? -Amino-1-oxy-6-clilorbenzene-4-sulfonic acid are diazotized. The diazo solution obtained is slowly poured into a solution of 55.8 parts of fumaric acid-di- 1 5-oxy-7-sulfonaphthyl- (2)] amide and 30 parts of sodium carbonate in 1200 parts of water.
: laughing about 24 hours, the coupling to the 3lonoazo dye is complete. The solution is then mixed with 150 parts of 20% sodium carbonate solution and combined with a diazo solution of 14 parts of 2-aminobenzene-1-carbonic acid. The coupling to the disazo dye requires about? Hours.
The disa.zo dye is then salted out of the reaction solution and. then filtered off.
To convert to the copper complex compound present in substance, 94 parts of the disazo dye are dissolved at 80 to 8: i ^ in 1500 parts of water and 60 parts of crystallized sodium acetate are added to the solution. 250 parts of a 20% aqueous solution of crystallized copper sulfate are then allowed to run into it and it is kept at 80 to 85 for an hour.
The metallization solution is then made alkaline by adding sodium carbonate, and the copper-containing disazo dye is salted out, filtered off and dried.
The new copper-containing disazo dye is a dark powder that dissolves in concentrated sulfuric acid with a red color and dyes cotton and fibers made of regenerated cellulose in burgundy shades of very good lightfastness and good washfastness. Post-treating the fiber with copper salts in the presence of a polyalkylene polyamine further improves the wetness properties of the dyeings.
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH301446T | 1952-01-17 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH301446A true CH301446A (en) | 1954-09-15 |
Family
ID=4491043
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH301446D CH301446A (en) | 1952-01-17 | 1952-01-17 | Process for the preparation of a copper-containing disazo dye. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH301446A (en) |
-
1952
- 1952-01-17 CH CH301446D patent/CH301446A/en unknown
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