CH311037A - Process for the production of a copper-containing polyazo dye. - Google Patents
Process for the production of a copper-containing polyazo dye.Info
- Publication number
- CH311037A CH311037A CH311037DA CH311037A CH 311037 A CH311037 A CH 311037A CH 311037D A CH311037D A CH 311037DA CH 311037 A CH311037 A CH 311037A
- Authority
- CH
- Switzerland
- Prior art keywords
- copper
- dye
- polyazo dye
- production
- parts
- 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
- C09B31/00—Disazo and polyazo dyes of the type A->B->C, A->B->C->D, or the like, prepared by diazotising and coupling
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Coloring (AREA)
Description
Zusatzpatent zum I3auptpatent Nr. 290585. Verfahren zur Herstellung eines kupferhaltigen Polyazofarbstoffes. Gegenstand des vorliegenden Patentes ist ein Verfahren zur Herstellung eines kupfer haltigen Polyazofarbstoffes, welches darin be steht., dass man 1 Mol der Diazoverbindung aus dem Aminodisazofarbstoff, welchen man durch Kuppeln von diazotierter 1-Amino- naphthalin-5-sulfonsäure mit l.-Aminonaph- thalin - 7 - sulfonsäure,
Weiterdiazotieren und Kuppeln mit 1-Amino-2-methoxy-5-methyl- benzol erhält, mit 1 Mol der Kupferkomplex verbindung der Zusammensetzung
EMI0001.0016
kuppelt und den erhaltenen Polyazofarbstoff mit einem kupferabgebenden Mittel unter solchen Bedingungen behandelt, da.ss die llethoxygruppe aufgespalten wird.
Im nachfolgenden Beispiel bedeuten die Teile Gewichtsteile.
Beispiel: 87,7 Teile des Aminodisazofarbstoffes, wel- t#hen man durch Kuppeln von diazotierter 1- A.minonaphthalin - 5 - sulfonsäure mit 1- Aminonaphthalin-7-sulfonsäure, Weiterdiazo- tieren und Kuppeln mit 1-Amino-2-methoxy- 5-methylbenzol erhält, werden in 500 Teilen Wasser angerührt.
Man versetzt die Suspen sion mit 7 Teilen Natriumnitrit und stellt sie bei 10-12 unter gutem Rühren durch Zusatz von 50 Teilen konzentrierter Salzsäure kongosauer. Nach ungefähr 2-3 Stunden ist die Diazotierung beendigt. Die erhaltene Di- a7overbindung wird mit der Lösung aus 55,2 Teilen der Kupferkomplexverbindung der Zu sammensetzung
EMI0001.0041
600 Teilen Wasser und 1500 Teilen Pyridin vereinigt. Man erwärmt die Masse 'zur Be endigung der Kupplung noch 2 Stunden lang auf 50-60 .
Zur Kupfei-Ling des erhaltenen Tetrakisazofarbstoffes gibt man ihr bei 90 eine Lösung aus 25 Teilen kristallisiertem Kupfersulfat, 25 Teilen 25o/oigem Ammoniak und 100 Teilen Wasser zu und rührt sie nun so lange bei 90-95 , bis sich die Kupferkom- plexverbindung unter Aufspaltung der Meth- oxygruppe gebildet hat. Hierauf wird der Farbstoff in üblielier Weise isoliert und bei 90 getrocknet.
Er färbt Baumwolle und Fa sern aus regenerierter Cellulose in grauen Tönen von hervorragender Liehteebtheit und guter Wascheehtheit.
Additional patent to main patent No. 290585. Process for the production of a copper-containing polyazo dye. The subject of the present patent is a process for the production of a copper-containing polyazo dye, which is therein. That one mole of the diazo compound from the aminodisazo dye, which is obtained by coupling diazotized 1-amino-naphthalene-5-sulfonic acid with 1.-aminonaph - thalin - 7 - sulfonic acid,
Further diazotization and coupling with 1-amino-2-methoxy-5-methyl-benzene is obtained with 1 mole of the copper complex compound of the composition
EMI0001.0016
coupled and treated the polyazo dye obtained with a copper donor under such conditions that the llethoxy group is split.
In the following example, the parts are parts by weight.
Example: 87.7 parts of the aminodisazo dye, which are obtained by coupling diazotized 1-aminonaphthalene-5-sulfonic acid with 1-aminonaphthalene-7-sulfonic acid, further diazo- tation and coupling with 1-amino-2-methoxy - 5-methylbenzene is obtained, are mixed in 500 parts of water.
The suspension is mixed with 7 parts of sodium nitrite and made Congo acidic at 10-12 with thorough stirring by adding 50 parts of concentrated hydrochloric acid. The diazotization is complete after about 2-3 hours. The di-a7o compound obtained is mixed with the solution of 55.2 parts of the copper complex compound of the composition
EMI0001.0041
600 parts of water and 1500 parts of pyridine are combined. The mass is heated to 50-60 for a further 2 hours to end the coupling.
A solution of 25 parts of crystallized copper sulfate, 25 parts of 250% ammonia and 100 parts of water is added to the copper of the tetrakisazo dye obtained at 90 and it is then stirred at 90-95 until the copper complex is split up the methoxy group has formed. The dye is then isolated in the usual way and dried at 90 °.
It dyes cotton and fibers from regenerated cellulose in gray tones with excellent lightness and good washability.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH311037T | 1952-11-27 | ||
CH290585T | 1953-05-15 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH311037A true CH311037A (en) | 1955-11-15 |
Family
ID=25733044
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH311037D CH311037A (en) | 1952-11-27 | 1952-11-27 | Process for the production of a copper-containing polyazo dye. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH311037A (en) |
-
1952
- 1952-11-27 CH CH311037D patent/CH311037A/en unknown
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