CH178964A - 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
CH178964A
CH178964A CH178964DA CH178964A CH 178964 A CH178964 A CH 178964A CH 178964D A CH178964D A CH 178964DA CH 178964 A CH178964 A CH 178964A
Authority
CH
Switzerland
Prior art keywords
dye
acid
preparation
nitrobenzene
boiling
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 CH178964A publication Critical patent/CH178964A/en

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

Description

  

      Verfahren    zur Tierstellung eines     Farbstoffes    der     Pyrenreihe.            lsegenstand    vorliegenden Patentes ist ein  <B>Verfahren zur</B> Herstellung eines Farbstoffes  der     Pyrenreihe,    das dadurch gekennzeichnet  ist, dass man     p-Dipheny        laminotrichlorpyr,err-          chiuon,    welches durch Erhitzen von     Tetra-          chlorpyrenchinon    vom Schmelzpunkt 325  C       rnit        p-Aminodipherryl    in Chlorbenzol erhält  lich ist, mit Anilin in Gegenwart eines säure  bindenden Mittels zurr Sieden erhitzt.

    



  <I>Beispiel</I>  50 Gewichtsteile     p-Diphenylaminotrichlor-          pyrenchinon,    erhältlich durch Erhitzen von       Tetrachlorpyrerrchinon    vom Schmelzpunkt       325')    C mit     p-Aminodipherryl    in Chlorbenzol,  werden mit 20 Gewichtsteilen Anilin und  15 Gewichtsteilen     Natriumacetat    in 500     (äe-          wichtsteilen    Nitrobenzol     1'/s    Stunden zum  Sieden erhitzt.

   Das in der üblichen Weise  aufgearbeitete     Reaktionsprodukt,    ein     p-Pheny        l-          anilirro-anilinodichlorpyrenchinorr    kristallisiert    ans Nitrobenzol in     dunkelgrünen        Nädelchen.          Konzentrierte    Schwefelsäure löst mit blau  grüner, rasch nach braun umschlagender  Farbe.



      Method for the production of a dye of the pyrene series. The subject matter of the present patent is a <B> process </B> for the production of a dye of the pyrene series, which is characterized in that p-dipheny laminotrichloropyr, err-chiuon, which is obtained by heating tetrachloropyrenquinone of melting point 325 C with p- Aminodipherryl is available in chlorobenzene, heated to boiling with aniline in the presence of an acid-binding agent.

    



  <I> Example </I> 50 parts by weight of p-diphenylaminotrichloropyrenquinone, obtainable by heating tetrachloropyrerrquinone with a melting point of 325 ') C with p-aminodipherryl in chlorobenzene, are mixed with 20 parts by weight of aniline and 15 parts by weight of sodium acetate in 500 (equivalent parts by weight of nitrobenzene Heated to the boil for 1 '/ s hours.

   The reaction product worked up in the usual way, a p-phenyl-anilirro-anilinodichloropyrenchinorrhoid crystallizes from nitrobenzene in dark green needles. Concentrated sulfuric acid dissolves with a blue-green color that quickly changes to brown.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines Farb stoffes der Py renreihe, dadurch gekennzeich- rret, dass man p-Diphenylamirrotrichlorpyrerr- chinon, welches durch Erhitzen von Tetra chlorpyrAnchinon vom Schmelzpunkt 325' C mit p-Arninodiphenyl in Chlorbenzol erhält lich ist, mit Anilin in Gegenwart eines säurebindenden Mittels zum Sieden erhitzt. PATENT CLAIM: Process for the production of a dye of the pyrene series, characterized in that p-Diphenylamirrotrichlorpyrerr- quinone, which can be obtained by heating tetrachlorpyrAnchinon from melting point 325 'C with p-aminodiphenyl in chlorobenzene, with aniline in the presence an acid-binding agent heated to boiling. Das so erhältliche p-Phenylanilino-anilino- dichlorpyrenchinon kristallisiert aus Nitro- benzol in dunkelgrünen Nädelchen, die sich in konzentrierter Schwefelsäure mit blau grüner Farbe lösen. UNTERANSPRüCHE: 1. Verfahren nach Patentanspruch, dadurch gekennzeichnet, dass man die Reaktions komponenten in Gegenwart von Nitro- benzol 1'/2 Stunden zum Sieden erhitzt. 2. The p-phenylanilino-anilino-dichloropyrenquinone which can be obtained in this way crystallizes from nitrobenzene in dark-green needles, which dissolve in concentrated sulfuric acid with a blue-green color. SUBClaims: 1. The method according to claim, characterized in that the reaction components are heated to boiling in the presence of nitrobenzene for 1 1/2 hours. 2. Verfahren nach Patentanspruch, dadurch gekennzeichnet, dass man als säurebinden des Mittel Natriumacetat verwendet. Process according to patent claim, characterized in that sodium acetate is used as the acid-binding agent.
CH178964D 1933-02-25 1934-02-23 Process for the preparation of a dye of the pyrene series. CH178964A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE178964X 1933-02-25
CH173746T 1934-12-15

Publications (1)

Publication Number Publication Date
CH178964A true CH178964A (en) 1935-08-15

Family

ID=25719425

Family Applications (1)

Application Number Title Priority Date Filing Date
CH178964D CH178964A (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) CH178964A (en)

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