CH178962A - Process for the preparation of a dye of the pyrene series. - Google Patents

Process for the preparation of a dye of the pyrene series.

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Publication number
CH178962A
CH178962A CH178962DA CH178962A CH 178962 A CH178962 A CH 178962A CH 178962D A CH178962D A CH 178962DA CH 178962 A CH178962 A CH 178962A
Authority
CH
Switzerland
Prior art keywords
dye
preparation
chloroaniline
pyrene series
heated
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 CH178962A publication Critical patent/CH178962A/en

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Description

  

  Verfahren zur Herstellung eines     Farbstoffes    der     Pyrenreihe.       Gegenstand vorliegenden Patentes ist ein  Verfahren zur Herstellung eines     Farbstoffes     der     Pyrenreihe,    das dadurch gekennzeichnet  ist, dass man     Tetrachlorpyrenchinon    vom       Schmelzpunkt   <B>3250</B> C mit     m-Chloranilin    in  Gegenwart eines säurebindenden Mittels er  hitzt.  



  <I>Beispiel</I>  37 Gewichtsteile     Tetrachlorpyrenchinon     (I'. P. 325 ) werden mit 400 Gewichtsteilen     in-          Chloranilin    bei Gegenwart von 30 Gewichts  teilen     Kaliumacetat    während einer Stunde  bei 180   verrührt. Nach dem Erkalten wird  das auskristallisierte     Di-(m-chloraniiino)-di-          chlorpyrenchinon    abgesaugt und nacheinander  mit Alkohol und Wasser gewaschen. Aus  Nitrobenzol kristallisiert das Produkt in  dunklen glänzenden Nadeln, F. P. 358  . Aus  gelbbrauner     Küpe    liefert es klare grüne Fär  bungen von guter Wasch-,     Cliloi-    und Licht  echtheit.



  Process for the preparation of a dye of the pyrene series. The subject of the present patent is a process for the preparation of a dye of the pyrene series, which is characterized in that tetrachloropyrenequinone with a melting point of <B> 3250 </B> C is heated with m-chloroaniline in the presence of an acid-binding agent.



  <I> Example </I> 37 parts by weight of tetrachloropyrenequinone (I '. P. 325) are stirred with 400 parts by weight of inchloroaniline in the presence of 30 parts by weight of potassium acetate for one hour at 180 °. After cooling, the di- (m-chloraniiino) -dichloropyrenequinone which has crystallized out is filtered off with suction and washed successively with alcohol and water. The product crystallizes from nitrobenzene in dark, shiny needles, F. P. 358. From a yellow-brown vat, it provides clear green colors with good wash, cliloi and lightfastness.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines Farb stoffes der Pyrenreihe, dadurch gekennzeich net, dass man Tetrachlorpyrenchinon vom Schmelzpunkt<B>3250</B> -C mit ni-Chloranilin in Gegenwart eines säurebindenden Mittels er hitzt. Das so erhältliche Di-(m-chloranilino)- dichlorpyrenchinon wird durch Umkristalli sieren aus Nitrobenzol in dunklen glänzen den Nadeln erhalten. Aus gelbbrauner Küpe gibt es auf Baum wolle klare grüne Färbungen von guter Wasch-, Chlor- und Lichtechtheit. PATENT CLAIM: Process for the production of a dye of the pyrene series, characterized in that tetrachloropyrenequinone with a melting point of <B> 3250 </B> -C is heated with ni-chloroaniline in the presence of an acid-binding agent. The thus obtainable di- (m-chloroanilino) - dichloropyrenquinone is obtained by recrystallizing from nitrobenzene in dark shiny needles. From yellow-brown vats there are clear green colors on cotton that are wash, chlorine and lightfast. TTNTERANSPRUCH Verfahren nach Patentanspruch, dadurch gekennzeichnet, dass man Tetrachlorpyren- chinon vom Schmelzpunkt 325 mit m-Chlor- anilin in Gegenwartvon Kaliumacetat 1 Stunde lang bei 180 erhitzt. A method according to claim, characterized in that tetrachloropyrene quinone with a melting point of 325 is heated with m-chloroaniline in the presence of potassium acetate at 180 for 1 hour.
CH178962D 1933-02-25 1934-02-23 Process for the preparation of a dye of the pyrene series. CH178962A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE178962X 1933-02-25
CH173746T 1934-12-15

Publications (1)

Publication Number Publication Date
CH178962A true CH178962A (en) 1935-08-15

Family

ID=25719423

Family Applications (1)

Application Number Title Priority Date Filing Date
CH178962D CH178962A (en) 1933-02-25 1934-02-23 Process for the preparation of a dye of the pyrene series.

Country Status (1)

Country Link
CH (1) CH178962A (en)

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