CH195554A - Process for the preparation of an anthraquinone dye. - Google Patents
Process for the preparation of an anthraquinone dye.Info
- Publication number
- CH195554A CH195554A CH195554DA CH195554A CH 195554 A CH195554 A CH 195554A CH 195554D A CH195554D A CH 195554DA CH 195554 A CH195554 A CH 195554A
- Authority
- CH
- Switzerland
- Prior art keywords
- bromoanthraquinone
- phosphorus trihalide
- dye
- preparation
- reaction mixture
- Prior art date
Links
Description
Verfahren zur Herstellung eines Anthraehinonfarbstoi%s. Gegenstand vorliegender Erfindung ist die Herstellung eines Anthrachinonfarbstof- fes aus 1-Oxäthylamino-4-bromanthrachinon und einem Phosphortrihalogenid, vorzug,
5- weise Phosphortrichlorid. Die Komponenten Urerden im Verhältnis 1 Mol Oxäthylamino- 4-bromanthrachinon zu mindestens 1 Mol Phosphortrihalogenid so lange miteinander erhitzt, bis die Reaktionsmischung bei Be handeln mit wässrigem Alkali völlig in Lö sung geht.
Anschliessend wird die gesamte Reaktionsmischung mit wä.ssrigem Natron alkali, z. B. Sodalösung, behandelt. Die Um setzung des Phospherhalogenids mit dem 1-O#xäthylamino-4A-bromanthrachinon wird zweckmässig in einem indifferenten, Verdün nungsmittel, wie Chlorbenzol, Chlortoluol, Nitrobenzol oder dergleichen, vorgenommen.
Der entstehende Farbstoff ist ein Na triumsalz, atellt ein rotes Pulver dar und färbt Wolle in blauroten Tönen an. <I>Beispiel:</I> Erwärmt man 1-Oxäthylamino-4-bram- anthrachinon in der fünffachen. Menge Phos- phortrichlorid kurz auf 70 C, so fällt beim Erkalten das in roten Nadeln kristallisie rende, noch halogenhaltige U msetzungspro- ,dukt aus, das,
man auf einer Glasnutscha von Phosphortrichlorid abtrennt. Der NutsGh- kuchen wird in kaltem Wasser aufge- schlemmt, dem ein natronalkalisch reagie rendes Mittel zugesetzt ist. Hierbei entsteht das Natriumsal.z .des Farbstoffes, das auf Wolle blaurote Töne liefert.
Die Substanz kann ohne vorherige Isolierung durch Um setzung mit den verschiedensten Aminen in violette bis .grünblaue Farbstoffe übergeführt werden.
Process for the preparation of an anthraquinone dye% s. The present invention is the preparation of an anthraquinone dye from 1-oxethylamino-4-bromoanthraquinone and a phosphorus trihalide, preferably
5- wise phosphorus trichloride. The components Urerden in the ratio of 1 mole of oxethylamino-4-bromoanthraquinone to at least 1 mole of phosphorus trihalide are heated together until the reaction mixture completely dissolves when treated with aqueous alkali.
The entire reaction mixture is then alkali with aqueous sodium bicarbonate, e.g. B. soda solution treated. The conversion of the phosphor halide with the 1-O # xäthylamino-4A-bromoanthraquinone is expediently carried out in an inert diluent such as chlorobenzene, chlorotoluene, nitrobenzene or the like.
The resulting dye is a sodium salt, atellt is a red powder and dyes wool in blue-red tones. <I> Example: </I> If 1-oxethylamino-4-bram-anthraquinone is heated five times. If the amount of phosphorus trichloride is brought to 70 C for a short time, the reaction product, which crystallizes in red needles and still contains halogen, precipitates on cooling.
phosphorus trichloride is separated off on a glass nutscha. The NutsGh cake is slurried in cold water to which an alkaline-soda reagent has been added. This creates the sodium salt of the dye, which produces blue-red tones on wool.
The substance can be converted into violet to .green-blue dyes by reaction with a wide variety of amines without prior isolation.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE195554X | 1935-03-04 | ||
CH191014T | 1936-02-27 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH195554A true CH195554A (en) | 1938-01-31 |
Family
ID=25722081
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH195554D CH195554A (en) | 1935-03-04 | 1936-02-27 | Process for the preparation of an anthraquinone dye. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH195554A (en) |
-
1936
- 1936-02-27 CH CH195554D patent/CH195554A/en unknown
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