CH193344A - Process for the preparation of a complex copper compound of a polyazo dye. - Google Patents
Process for the preparation of a complex copper compound of a polyazo dye.Info
- Publication number
- CH193344A CH193344A CH193344DA CH193344A CH 193344 A CH193344 A CH 193344A CH 193344D A CH193344D A CH 193344DA CH 193344 A CH193344 A CH 193344A
- Authority
- CH
- Switzerland
- Prior art keywords
- copper compound
- copper
- dye
- action
- preparation
- 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
- C09B45/00—Complex metal compounds of azo dyes
- C09B45/02—Preparation from dyes containing in o-position a hydroxy group and in o'-position hydroxy, alkoxy, carboxyl, amino or keto groups
- C09B45/24—Disazo or polyazo compounds
- C09B45/28—Disazo or polyazo compounds containing copper
-
- 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
- C09B43/00—Preparation of azo dyes from other azo compounds
- C09B43/08—Preparation of azo dyes from other azo compounds by reduction
- C09B43/10—Preparation of azo dyes from other azo compounds by reduction with formation of a new azo or an azoxy bridge
-
- 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
- C09B45/00—Complex metal compounds of azo dyes
- C09B45/38—Preparation from compounds with —OH and —COOH adjacent in the same ring or in peri position
- C09B45/42—Copper compounds
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
Verfahren zur Herstellung einer komplexen Kupferverbindung eines Polyazofarbstoffes. Es wurde gefunden, dass eine komplexe Kupferverbindung eines Polyazoàrbstoffes durch Einwirkung von kupferabgebenden,
sowie alkalischen reduzierenden Mitteln auf den Azofarbstoff der Formel
EMI0001.0009
biss zur Verkettung zweier Moleküle durch die bei der Reduktion der Nitrogruppen ent stehende 'Stickstoffbrücke hergestellt werden kann, wenn man die Einwirkung des kupfer abgebenden, sowie des alkalischen reduzieren den Mittels, ohne dass ein Zwischenprodukt isoliert wird, durchführt.
Die Kupferverbindung stellt in trocke nem Zustande ein dunkles Pulver dar, das sioh in Wasser und konzentrierter Schwefel säure mit blauer Farbe löst und Baumwolle, sowie Kunstseide aufs regenerierter Zellulose aus glaubersalzhaltigem Bade in blauen Tönen färbt.
Die Einwirkung des kupferabgebenden Mittels, sowie der alkalischen reduzierenden Mittel, wie z. B. Glukose, ohne dass ein 7lwischenprodukt isoliert wird, wird bei spielsweise derart durchgeführt, dass eine Lösung des Farbstoffes in wässerigen Ätz- alkalien, wie z.
B. in Natron- oder Kalilauge, mit dem metallabgebenden und dem redu zierenden Mittel erhitzt wird. Peispiel:
1,7 Teile 5-Nitro-2-amino-l-oxybenzol werden diazotiert und mit 4,4 Teilen 2 - (4'- Oxy - 3'- carboxy-) phenylamino- 5 -oxy- naphthalin-7-sulfonsäure gekuppelt.
Der er- haItene Farbstoff wird abgeschieden, gerei nigt, unter Zusatz von 24 Teilen 30%iger Natronlauge in 2,50 Teilen Wasser von<B>60'</B> gelöst und etwa 10 Minnten mit einem Kupferungsmittel behandelt, das aus einer Lösung von 2;
5 Teilen Kupfersulfat, sowie 3 Teilen Weinsäure in 50 Teilen Wasser und der zum Neutralisieren erforderlichen Menge Natronlauge hergestellt wurde. Hier auf setzt man 1,8 Teile Traubenzucker als 10%ige Lösung hinzu, erwärmt etwa eine Stunde auf<B>60',</B> ;säuert mit Essigsäure an und scheidet den Farbstoff durch Beigabe von Kochsalz ab.
Process for the preparation of a complex copper compound of a polyazo dye. It has been found that a complex copper compound of a polyazo dye by the action of copper-releasing,
as well as alkaline reducing agents to the azo dye of the formula
EMI0001.0009
bis to link two molecules through the nitrogen bridge created during the reduction of the nitro groups, if the action of the copper releasing and the alkaline reducing agent is carried out without isolating an intermediate product.
When dry, the copper compound is a dark powder that dissolves in water and concentrated sulfuric acid with a blue color and stains cotton and rayon on regenerated cellulose from a bath containing Glauber's salt in blue tones.
The action of the copper releasing agent, as well as the alkaline reducing agents, such as. B. glucose, without isolating an intermediate product, is carried out for example in such a way that a solution of the dye in aqueous caustic alkalis, such as.
B. in sodium or potassium hydroxide, is heated with the metal donating and the redu decorative agent. Example:
1.7 parts of 5-nitro-2-amino-1-oxybenzene are diazotized and coupled with 4.4 parts of 2- (4'-oxy-3'-carboxy-) phenylamino-5-oxynaphthalene-7-sulfonic acid.
The dye obtained is deposited, cleaned, dissolved in 2.50 parts of 60 'water with the addition of 24 parts of 30% strength sodium hydroxide solution and treated for about 10 minutes with a copper agent which is made from a solution of 2;
5 parts of copper sulfate and 3 parts of tartaric acid in 50 parts of water and the amount of sodium hydroxide solution required for neutralization was prepared. Here you add 1.8 parts of glucose as a 10% solution, heat for about an hour to <B> 60 ', </B>; acidify with acetic acid and separate the color by adding table salt.
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH193344T | 1936-06-17 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH193344A true CH193344A (en) | 1937-10-15 |
Family
ID=4438798
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH193344D CH193344A (en) | 1936-06-17 | 1936-06-17 | Process for the preparation of a complex copper compound of a polyazo dye. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH193344A (en) |
-
1936
- 1936-06-17 CH CH193344D patent/CH193344A/en unknown
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