CH307171A - Process for the production of a copper-containing azo dye. - Google Patents
Process for the production of a copper-containing azo dye.Info
- Publication number
- CH307171A CH307171A CH307171DA CH307171A CH 307171 A CH307171 A CH 307171A CH 307171D A CH307171D A CH 307171DA CH 307171 A CH307171 A CH 307171A
- Authority
- CH
- Switzerland
- Prior art keywords
- copper
- acid
- aminopyrene
- azo dye
- containing azo
- 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
- C09B43/00—Preparation of azo dyes from other azo compounds
- C09B43/12—Preparation of azo dyes from other azo compounds by acylation of amino groups
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Coloring (AREA)
Description
Verfahren zur Herstellung eines kupferhaltigen Azofarbstofes. Gegenstand des vorliegenden Patentes ist ein Verfahren zur Herstellung eines kupfer haltigen Azofarbstoffes, welches darin besteht., dass man 1 Mol des durch Kuppeln von diano tierter 3-Aminopyrendisnlfonsäure, erhältlich durch Behandeln von 3-Aminopyre mit Sehwefelsäure-Monohydrat, mit 1-Amino-3- methylbenzol hergestellten Aminomonoazo- farbstoffes und 1 Mol der Kupferkomple:
- verbindung der Zusammensetzung
EMI0001.0014
vorteilhaft in wässerigem Medium und in Gegenwart eines säurebindenden Mittels, mit 1 Mol eines Fumarsäuredihalogenidsumsetzt.
Im nachfolgenden Beispiel bedeuten die Teile Gewichtsteile.
Beispiel: \?4,8 Teile des durch Kuppeln von diazo- t.ierter 3-Aminopyrendisulfonsäure (erhalten durch Behandeln von 3-Aminopyren mit Sehwefelsänre-Monohydrat) mit 1-Amino-3- methylbenzol hergestellten Aminomonoazo- farbstoffes und 37,0 Teile der Kupferkomplex verbindung der Zusammensetzung (I) werden bei Zimmertemperatur in Wasser unter Zu satz von Natriumhydroxydlösung gelöst.
In die Lösung tropft man gleichzeitig und unter gutem Rühren einerseits eine Mischung aus 7,7 Teilen Fumarsäuredichlorid und 8 Teilen Benzol und anderseits so viel einer Natrium carbonatlösung, dass die Reaktion der Kon- densationslösung immer schwach alkalisch ist. Nachdem alles Fumarsäuredichlorid eingetra gen ist, wird die Kondensationslösung noch so lange weitergerührt, bis sich keine freie Aminogruppe mehr nachweisen lässt. Hierauf wird der gebildete Disazofarbstoff in der Wärme mit Hilfe von Natriumchlorid abge schieden, abfilt.riert und getrocknet.
Der neue kupferhaltige Azofarbstoff ist ein gelbbraunes Pulver, welches sich in Was ser mit orangegelber und in konzentrierter Schwefelsäure mit grüner Farbe löst und Baumwolle und Fasern aus regenerierter Cel- lulose in rotstichig gelben, sehr gut lichtech ten Tönen färbt.
Process for the production of a copper-containing azo dye. The subject of the present patent is a process for the preparation of a copper-containing azo dye, which consists in that 1 mol of the 3-aminopyrene disinfonic acid obtained by coupling of diano-tated 3-aminopyrene, obtainable by treating 3-aminopyrene with sulfuric acid monohydrate, with 1-amino 3-methylbenzene-made aminomonoazo dye and 1 mole of the copper complex:
- connection of composition
EMI0001.0014
advantageously in an aqueous medium and in the presence of an acid-binding agent, reacted with 1 mol of a fumaric acid dihalide.
In the following example, the parts are parts by weight.
Example: 4.8 parts of the aminomonoazo dye prepared by coupling diazo-t.ated 3-aminopyrenedisulphonic acid (obtained by treating 3-aminopyrene with sulfuric acid monohydrate) with 1-amino-3-methylbenzene and 37.0 parts the copper complex compound of the composition (I) are dissolved in water with addition of sodium hydroxide solution at room temperature.
At the same time and with thorough stirring, a mixture of 7.7 parts of fumaric acid dichloride and 8 parts of benzene and, on the other hand, enough sodium carbonate solution that the reaction of the condensation solution is always weakly alkaline are added dropwise to the solution. After all of the fumaric acid dichloride has been entered, the condensation solution is stirred until no more free amino groups can be detected. The disazo dye formed is then deposited in the heat with the aid of sodium chloride, filtered off and dried.
The new copper-containing azo dye is a yellow-brown powder which dissolves in water with an orange-yellow color and in concentrated sulfuric acid with a green color and colors cotton and fibers made from regenerated cellulose in reddish yellow, very lightfast shades.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH307171T | 1952-06-16 | ||
CH290294T | 1952-09-04 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH307171A true CH307171A (en) | 1955-05-15 |
Family
ID=25732944
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH307171D CH307171A (en) | 1952-06-16 | 1952-06-16 | Process for the production of a copper-containing azo dye. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH307171A (en) |
-
1952
- 1952-06-16 CH CH307171D patent/CH307171A/en unknown
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