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.

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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
Application number
Other languages
German (de)
Inventor
Aktiengesellsc Farbenindustrie
Original Assignee
Ig Farbenindustrie Ag
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ig Farbenindustrie Ag filed Critical Ig Farbenindustrie Ag
Publication of CH116817A publication Critical patent/CH116817A/en

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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)

PATENTANSPRUCH: Verfahren zur Darstellung eines neuen chlorhaltigen Küpenfarbstoffes der Anthra- chinonreihe, dadurch gekennzeichnet, dass man auf Pyrazolanthrougelb, das durch Erhitzen von Pyrazolanthron mit Ätzalkalien erhalten werden kann und dem nach der wissenschaft lichen Literatur folgende Formel zukommt: EMI0002.0001 Chlor einwirken lässt. PATENT CLAIM: Process for the preparation of a new chlorine-containing vat dye of the anthraquinone series, characterized in that pyrazolanthrougelb, which can be obtained by heating pyrazolanthrone with caustic alkalis and which, according to the scientific literature, has the following formula: EMI0002.0001 Let chlorine take effect. 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 Reinheit und erhöhte Kochechtheit auszeichnen. UNTERANSPRÜCHE: 1. Verfahren nach Patentanspruch, dadurch gekennzeichnet, dass man das Py razolan- throngelb in Oleum löst und unter Zusatz von Jod Chlor einwirken lässt. 2. 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 from the colorations achieved with the starting material by purity and increased fastness to boiling. SUB-CLAIMS: 1. The method according to claim, characterized in that the Py razolan- throne yellow is dissolved in oleum and, with the addition of iodine, chlorine is allowed to act. 2. Verfahren nach Patentanspruch, dadurch gekennzeichnet, dass man Pyrazolanthron- gelb in Chlorsulfonsäure löst und unter Zusatz voll Jod Chlor einwirken lässt. Process according to patent claim, characterized in that pyrazolanthrone yellow is dissolved in chlorosulfonic acid and, with the addition of iodine, chlorine is allowed to act.
CH116817D 1924-06-20 1925-06-03 Process for the preparation of a chlorine-containing vat dye of the anthraquinone series. CH116817A (en)

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)

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