CH153719A - Process for the preparation of a vat dye. - Google Patents

Process for the preparation of a vat dye.

Info

Publication number
CH153719A
CH153719A CH153719DA CH153719A CH 153719 A CH153719 A CH 153719A CH 153719D A CH153719D A CH 153719DA CH 153719 A CH153719 A CH 153719A
Authority
CH
Switzerland
Prior art keywords
brown
dye
preparation
vat
vat dye
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 CH153719A publication Critical patent/CH153719A/en

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

Description

  

  Verfahren zur Darstellung eines     Nüpenfarbstoffes.       Im Hauptpatent ist ein Verfahren zur  Darstellung eines     Küpenfarbstoffes    aus dem  Kondensationsprodukt von     Bzl-Halogenbenz-          anthron    und     4.4'-Diaminodiphtaloylcarbazol     durch Behandeln mit Alkali beschrieben.  



  Es wurde nun gefunden,     dass    man in ganz  analoger Weise einen ähnlichen     Küpenfarb-          stoff    erhält, wenn man das Kondensations  produkt aus<B>1</B>     Mol    2.     6-Dichlorbenzanthron     und<B>1</B>     Mol        5-Amino-4'-berizoyl-aminodiphta-          loylearbazol,    welch letzteres die Formel  
EMI0001.0014     
    besitzt, mit einem sauren Kondensations  mittel behandelt, zum Beispiel in konzen  trierter Schwefelsäure erwärmt.

      <I>Beispiel:</I>  <B>10</B> Teile des Kondensationsproduktes aus  <B>1</B>     Mol        2.6-Dichlorbenzanthron    und<B>1</B>     Mol        5-          Amino-4'-benzoylaminodiphtaloyleat-bazol    (er  hältlich z.

   B. durch     UmsetzLino,    der vorer  wähnten Komponenten mit     Natriumacetat     und Kupferverbindungen in siedendem     Nitro-          benzol)    werden mit 200 Teilen konzentrierter  Schwefelsäure so lange auf     50-521'   <B>C</B> er  wärmt, bis die anfangs     blauroteLösungsfarbe     in ein     violettstichiges    Braun übergegangen  ist. Nach dem Erkalten giesst man das Re  aktionsgemisch in Wasser, filtriert den Farb  stoff ab und wäscht ihn neutral. Man erhält  so den neuen Farbstoff als braunschwarzen  Teig, der aus brauner     Küpe    die vegetabilische  Faser in schönen rotbraunen Tönen färbt.

    Der Farbstoff ist in trockenem Zustande ein  braunschwarzes Pulver, das sich in konzen  trierter Schwefelsäure mit     violettstichig    brau  ner Farbe löst.



  Process for the preparation of a pebble dye. The main patent describes a process for the preparation of a vat dye from the condensation product of Bzl-halobenzanthrone and 4,4'-diaminodiphtaloylcarbazole by treatment with alkali.



  It has now been found that a similar vat dye is obtained in a completely analogous manner if the condensation product of <B> 1 </B> mol 2. 6-dichlorobenzanthrone and <B> 1 </B> mol 5- Amino-4'-berizoyl-aminodiphtaloyearbazole, which latter the formula
EMI0001.0014
    owns, treated with an acidic condensation agent, for example heated in concentrated sulfuric acid.

      <I> Example: </I> <B> 10 </B> parts of the condensation product from <B> 1 </B> mol 2,6-dichlorobenzanthrone and <B> 1 </B> mol 5- amino-4'- benzoylaminodiphtaloyleate-bazole (available e.g.

   B. by UmsetzLino, the aforementioned components with sodium acetate and copper compounds in boiling nitrobenzene) are heated to 50-521 ° C with 200 parts of concentrated sulfuric acid until the initially bluish-red solution color turns into a violet-tinged color Brown has passed. After cooling, the reaction mixture is poured into water, the dye is filtered off and washed neutral. The new dye is thus obtained as a brown-black dough which, from a brown vat, dyes the vegetable fibers in beautiful red-brown shades.

    When dry, the dye is a brown-black powder that dissolves in concentrated sulfuric acid with a purple-tinged brown color.

Claims (1)

<B>PATENTANSPRUCH:</B> Verfahren zur Darstellung eines Küpen- farbstoffes, dadurch gekennzeichnet, dass man das Kondensationsprodukt aus<B>1</B> Mol 2.6- Dichlorbenzantbron und<B>1</B> Mol 5-Amiiio-g- berizoylaminodiphtaloylearbazol mit einem sauren Konderisationsmittel behandelt. <B> PATENT CLAIM: </B> Process for the preparation of a vat dye, characterized in that the condensation product of <B> 1 </B> mole 2,6-dichlorobenzantbron and <B> 1 </B> mole 5-amine -g- berizoylaminodiphtaloylearbazol treated with an acidic condensation agent. Der Farbstoff ist ein braunschwarzes Pulver, das sich in konzentrierter Schwefel säure mit violettstichig brauner Farbe löst und aus brauner Küpe Baumwolle in schönen rotbraunen Tönen färbt. The dye is a brown-black powder that dissolves in concentrated sulfuric acid with a purple-tinged brown color and dyes cotton in beautiful red-brown tones from a brown vat.
CH153719D 1930-04-05 1931-03-20 Process for the preparation of a vat dye. CH153719A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE153719X 1930-04-05
CH149712T 1930-10-03

Publications (1)

Publication Number Publication Date
CH153719A true CH153719A (en) 1932-03-31

Family

ID=25715493

Family Applications (1)

Application Number Title Priority Date Filing Date
CH153719D CH153719A (en) 1930-04-05 1931-03-20 Process for the preparation of a vat dye.

Country Status (1)

Country Link
CH (1) CH153719A (en)

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