CH189305A - Process for the preparation of an azo dye. - Google Patents

Process for the preparation of an azo dye.

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Publication number
CH189305A
CH189305A CH189305DA CH189305A CH 189305 A CH189305 A CH 189305A CH 189305D A CH189305D A CH 189305DA CH 189305 A CH189305 A CH 189305A
Authority
CH
Switzerland
Prior art keywords
azo dye
preparation
mol
dye
diazotized
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 CH189305A publication Critical patent/CH189305A/en

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

Description

  

  Verfahren zur Herstellung eines     Azofarbstoües.       Es wurde gefunden, dass man zu wert  vollen     metallkomplexbildenden        Azofarbstoffen     gelangt, wenn man zur     Metallkomplexbildung     geeignete     Diazo-    oder     Tetrazoverbindungen     mit Kupplungskomponenten vom Typ  
EMI0001.0007     
    worin X = S, -0,     -CH?,    oder     -CH=CH-          bedeutet    oder ihren     Substitutionsprodukten,     in     o-Stellung    zur     Hydroxylgruppe    kuppelt.

    Die so erhältlichen Farbstoffe lassen sich in  Substanz oder auf der Faser mit zur Kom  plexbildung geeigneten Metallen     bezw.    Me  tallverbindungen in die entsprechenden     Kom-          plexmetallverbindungen    überführen. Die auf  der Faser hergestellten Komplexverbindungen  zeichnen sich im allgemeinen durch gute       Walk-,        Karbonisier-    und     Lichtechtheit    aus.

      Gegenstand des vorliegenden Patentes ist  ein Verfahren zur Herstellung eines     Azo-          farbstoffes.    Es ist dadurch gekennzeichnet,  dass man 1     Mol.        diazotierte        4-Nitro-2-amino-          phenol-6-sulfonsäure    in alkalischer Lösung  mit 1     Mol.        3-Oxydiphenylenoxyd    kuppelt.

    <I>Beispiel:</I>  1     Mol.        diazotierte        4-Nitro-2-aminophenol-          6-sulfonsäure    wird in alkalischer Lösung mit  1     Mol.        3-Oxydiphenylenoxyd    gekuppelt. Nach  beendigter Kupplung     salzt,'man    den Farbstoff  aus, filtriert ihn ab und trocknet. Der Farb  stoff stellt ein dunkles Pulver dar, das sich  in Wasser löst und Wolle rotbraun- anfärbt.       DurchNachchromieren    erhält man-ein walk-,  karbonisier- und lichtechtes     Violettbraun.  



  Process for the production of an azo dye. It has been found that valuable azo dyes which form metal complexes are obtained if diazo or tetrazo compounds suitable for metal complex formation with coupling components of the type
EMI0001.0007
    wherein X = S, -0, -CH ?, or -CH = CH-, or its substitution products, couple in the o-position to the hydroxyl group.

    The dyes obtainable in this way can be in substance or on the fiber with metals suitable for complex formation. Convert metal compounds into the corresponding complex metal compounds. The complex compounds produced on the fiber are generally characterized by good flexing, carbonizing and lightfastness.

      The present patent relates to a process for the production of an azo dye. It is characterized in that 1 mol of diazotized 4-nitro-2-aminophenol-6-sulfonic acid is coupled in alkaline solution with 1 mol of 3-oxydiphenylene oxide.

    <I> Example: </I> 1 mole of diazotized 4-nitro-2-aminophenol-6-sulfonic acid is coupled in an alkaline solution with 1 mole of 3-oxydiphenylene oxide. When the coupling is complete, the dye is salted out, filtered off and dried. The dye is a dark powder that dissolves in water and dyes wool reddish brown. After chrome plating, you get a milled, carbonized and lightfast violet brown.

 

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines Azofarb- stoffes, dadurch gekenazeichuet, dass man 1 Mol. diazotierte 4-Nitro-2-aminophenol-6- sulfonsäure in alkalischer Lösung mit 1 Mol. 3-Ogydiphenylenogyd kuppelt. Der erhaltene Farbstoff stellt ein dunkles Pulver dar, das sich in Wasser löst und Wolle rotbraun anfärbt. PATENT CLAIM: Process for the production of an azo dye, characterized in that 1 mol of diazotized 4-nitro-2-aminophenol-6-sulfonic acid in alkaline solution is coupled with 1 mol of 3-Ogydiphenylenogyd. The dye obtained is a dark powder which dissolves in water and dyes wool a reddish brown. Durch Nachchro- mieren erhält man ein walk-, karbonisier- und lichtechtes Violettbraun. After chrome-plating, a bleached, carbonized and lightfast violet brown is obtained.
CH189305D 1934-06-27 1935-06-15 Process for the preparation of an azo dye. CH189305A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE189305X 1934-06-27
CH183459T 1935-06-15

Publications (1)

Publication Number Publication Date
CH189305A true CH189305A (en) 1937-02-15

Family

ID=25720872

Family Applications (1)

Application Number Title Priority Date Filing Date
CH189305D CH189305A (en) 1934-06-27 1935-06-15 Process for the preparation of an azo dye.

Country Status (1)

Country Link
CH (1) CH189305A (en)

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