CH116817A - Process for the preparation of a chlorine-containing vat dye of the anthraquinone series. - Google Patents
Process for the preparation of a chlorine-containing vat dye of the anthraquinone series.Info
- Publication number
- CH116817A CH116817A CH116817DA CH116817A CH 116817 A CH116817 A CH 116817A CH 116817D A CH116817D A CH 116817DA CH 116817 A CH116817 A CH 116817A
- Authority
- CH
- Switzerland
- Prior art keywords
- chlorine
- yellow
- preparation
- anthraquinone series
- pyrazolanthrone
- Prior art date
Links
Landscapes
- Coloring (AREA)
Description
Verfahren zur Darstellung eines chlorhaltigen Küpenfarbstoffes der Anthrachinonreihe. Es wurde gefunden, dass man einen neuen chlorhaltigen Küpenfarbstoff der Anthrachinon- reihe erhält, wenn man auf das in der deut schen Patentschrift 255641 beschriebene Pyr- azolanthrongelb, das durch Erhitzen von Pyr- azolanthron mit Ätzalkalien erhalten werden kann und dem nach der wissenschaftlichen Literatur folgende Formel zukommt:
EMI0001.0011
Chlor einwirken lässt, zweckmässig, indem man es in Oleum oder Chlorsulfonsäure löst und Jod zusetzt.
Das so erhaltene Dichlorpyrazolanthron- gelb ist trocken ein orangefarbenes Pulver, löslich in Schwefelsäure mit roter Farbe und färbt Baumwolle aus blauer Küpe in orange Tönen an, die sich vor den mit dem Aus gangsstoff erzielten Färbungen durch Rein heit und erhöhte Kochechtheit auszeichnen. <I>Beispiel</I> 100 Teile Pyrazolanthrongelb werden in 1000 Teilen 25 o/oigecn Oleum gelöst, 0,5 Teile feingepulvertes Jod eingestreut und bei 50 o C etwa 12 Stunden ein mässiger Strom Chlor unter Rühren eingeleitet, bis die einem Di- chlorderivat entsprechende Chlormenge auf genommen ist.
Die Aufarbeitung geschieht wie üblich.
Process for the preparation of a chlorine-containing vat dye of the anthraquinone series. It has been found that a new chlorine-containing vat dye of the anthraquinone series is obtained when one clicks on the pyrazolanthrone yellow described in German patent specification 255641, which can be obtained by heating pyrazolanthrone with caustic alkalis and the following according to the scientific literature Formula applies:
EMI0001.0011
Let the chlorine take effect, expediently by dissolving it in oleum or chlorosulfonic acid and adding iodine.
The dichloropyrazolanthrone yellow obtained in this way is an orange powder when dry, soluble in sulfuric acid with a red color and stains cotton from a blue vat in orange tones, which are distinguished by purity and increased fastness to boiling compared to the colorations achieved with the starting material. <I> Example </I> 100 parts of pyrazolanthrone yellow are dissolved in 1000 parts of 25% oleum, 0.5 part of finely powdered iodine is sprinkled in and a moderate stream of chlorine is passed in at 50 ° C. for about 12 hours, until the one di- chlorine derivative corresponding amount of chlorine is taken.
Working up is done as usual.
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE116817X | 1924-06-20 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH116817A true CH116817A (en) | 1926-09-16 |
Family
ID=5654875
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH116817D CH116817A (en) | 1924-06-20 | 1925-06-03 | Process for the preparation of a chlorine-containing vat dye of the anthraquinone series. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH116817A (en) |
-
1925
- 1925-06-03 CH CH116817D patent/CH116817A/en unknown
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