CH122359A - Process for the preparation of bis-aminophenylanthrone. - Google Patents

Process for the preparation of bis-aminophenylanthrone.

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Publication number
CH122359A
CH122359A CH122359DA CH122359A CH 122359 A CH122359 A CH 122359A CH 122359D A CH122359D A CH 122359DA CH 122359 A CH122359 A CH 122359A
Authority
CH
Switzerland
Prior art keywords
aminophenylanthrone
bis
air
aniline
blue
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 CH122359A publication Critical patent/CH122359A/en

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  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Description

  

  Verfahren zur Herstellung von     Bis-Aminophenylanthron.       Gemäss dem Verfahren der vorliegenden       Erfindung    wird aus     Antrachinon    und Salzen  des Anilins eine neue Verbindung erhalten,  das     Bis-Aminophenylanthron,    welchem fol  gende Formel beizulegen ist  
EMI0001.0005     
    Das     Bis-Aminophenylanthron    kann als  Ausgangsmaterial zur Herstellung von Farb  stoffen verschiedener Gruppen Verwendung  finden.  



       Beispiel:     Ein Gemenge von 200 Gewichtsteilen       Anthrachinon,    500 Gewichtsteilen salzsaurem  Anilin und 1000 Gewichtsteilen Anilin wird  in einem Kessel unter Rühren etwa 2-3  Stunden auf<B>1800</B>     Ölbadtemperatur    erhitzt.  Das Reaktionsprodukt wird mit Alkali über  sättigt und durch     Wasserdampfdestillation     von überschüssigem Anilin befreit. Der Rück-    stand wird in verdünnter Salzsäure gelöst,  vom unveränderten     Anthrachinon        abfiltriert,     mit Alkali gefällt und nach dem Trocknen  aus siedendem Nitrobenzol umkristallisiert.  



  Das     Bis-Aminophenylanthron    stellt ein  graugrünes, bei 298   C schmelzendes Kristall  pulver dar, welches die Neigung zeigt, sich  an der Luft     grünlichblau    zu färben. Es ist  unlöslich in Wasser und in den gebräuch  lichen     niedrigsiedenden    Lösungsmitteln, reich  lich löslich in siedendem     Xylol    und Nitro  benzol. Es löst sich leicht in verdünnten Mi  neralsäuren farblos auf; auch diese Lösungen  zeigen die Neigung, sich an der Luft blau  grün zu färben.  



  In obigem Beispiel können die Gewichts  verhältnisse in weiten Grenzen verändert  werden ; an Stelle der salzsauren Anilin  basen können Salze anderer Mineralsäuren  verwendet werden.



  Process for the preparation of bis-aminophenylanthrone. According to the process of the present invention, a new compound is obtained from anthraquinone and salts of aniline, bis-aminophenylanthrone, to which the following formula is to be attached
EMI0001.0005
    The bis-aminophenylanthrone can be used as a starting material for the production of dyes from various groups.



       Example: A mixture of 200 parts by weight of anthraquinone, 500 parts by weight of hydrochloric acid aniline and 1000 parts by weight of aniline is heated to an oil bath temperature of <B> 1800 </B> for 2-3 hours while stirring. The reaction product is saturated with alkali and freed from excess aniline by steam distillation. The residue is dissolved in dilute hydrochloric acid, the unchanged anthraquinone is filtered off, precipitated with alkali and, after drying, recrystallized from boiling nitrobenzene.



  The bis-aminophenylanthrone is a gray-green crystal powder that melts at 298 C and tends to turn greenish-blue in air. It is insoluble in water and in the common low-boiling solvents, richly soluble in boiling xylene and nitrobenzene. It easily dissolves colorless in dilute mineral acids; These solutions also show a tendency to turn blue-green in air.



  In the above example, the weight ratios can be changed within wide limits; Instead of the hydrochloric aniline bases, salts of other mineral acids can be used.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung von Bis-Amino- phenylanthron, dadurch gekennzeichnet, dass man Salze des Anilins auf Anthrachinon einwirken lässt. Das Bisaminophenylanthron stellt ein graugrünes, bei<B>2980</B> C schmelzendes Kri stallpulver dar, welches die Neigung hat, sich an der Luft grünlichblau zu färben. PATENT CLAIM: Process for the production of bis-aminophenylanthrone, characterized in that salts of aniline are allowed to act on anthraquinone. The bisaminophenyl anthrone is a gray-green crystal powder that melts at <B> 2980 </B> C and tends to turn greenish-blue when exposed to air. Es ist unlöslich in Wasser und in den gebräuch lichen niedrigsiedenden Lösungsmitteln, reich- lieh löslich in siedendem Xylol und Nitro- benzol. Es löst sich leicht in verdünnten Mineralsäuren farblos auf ; auch diese Lö sungen zeigen die Neigung, sich an der Luft blaugrün zu färben. It is insoluble in water and in the usual low-boiling solvents, and is richly soluble in boiling xylene and nitrobenzene. It easily dissolves colorless in dilute mineral acids; These solutions also show a tendency to turn blue-green in air.
CH122359D 1925-07-30 1926-07-29 Process for the preparation of bis-aminophenylanthrone. CH122359A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE122359X 1925-07-30

Publications (1)

Publication Number Publication Date
CH122359A true CH122359A (en) 1927-09-16

Family

ID=5657322

Family Applications (1)

Application Number Title Priority Date Filing Date
CH122359D CH122359A (en) 1925-07-30 1926-07-29 Process for the preparation of bis-aminophenylanthrone.

Country Status (1)

Country Link
CH (1) CH122359A (en)

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