CH173263A - Process for the preparation of a dye of the gallocyanin series. - Google Patents

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

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Publication number
CH173263A
CH173263A CH173263DA CH173263A CH 173263 A CH173263 A CH 173263A CH 173263D A CH173263D A CH 173263DA CH 173263 A CH173263 A CH 173263A
Authority
CH
Switzerland
Prior art keywords
series
dye
gallocyanin
preparation
dyes
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 CH173263A publication Critical patent/CH173263A/en

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

Description

  

  Verfahren zur Darstellung eines Farbstoffes der     Galloeyaninreihe.       <B>E</B>s wurde gefunden. dass man zu wert  vollen Farbstoffen der     Gallocyaninreihe    ge  langt, wenn man     Gallussäure    oder deren De  rivate, wie     Gallamid,        Gallanilid,        Gallussäure-          ester    oder auch     Pyrogallol    und Abkömmlinge  dieser Körper, mit     Nitrosoverbindungen    se  kundärer oder tertiärer aromatischer Amine  der allgemeinen Formel:

    
EMI0001.0010     
    kondensiert, worin R Wasserstoff,     Alk\-1.          Oxalkyl,        Sulfalkyl    oder     Aralkyl    bedeutet.  



  Die so erhaltenen Farbstoffe können ge  gebenenfalls nach den bei der Herstellung  von Farbstoffen der     Gallocyaninreihe    übli  ehen Methoden in weitere Derivate über  geführt werden, zum Beispiel durch Ab  spaltung der     Carboxylgruppe,    Reduktion zu       Leukofarbstoffen,    Kondensation mit     Mono-          oder    Diaminen oder deren     Sulfonsäuren,       mit Aldehyden,     Phenolen,

          Naphtholen    oder       Vaphtholsulfonsäuren.    Die nach diesen Ar  beitsweisen gewonnenen Produkte können  nötigenfalls noch einer nachträglichen     Sul-          fonierung    unterworfen werden.  



  Die so erhaltenen Farbstoffe zeichnen sich  durch eine besonders für Druckfarbstoffe       erwünschte    vorzügliche Löslichkeit, durch  Klarheit des Farbtones und durch gute Echt  heitseigenschaften aus.  



  Gegenstand des vorliegenden Patentes ist  ein Verfahren zur Herstellung eines neuen  Farbstoffes der     Gallocyaninreihe    durch Kon  densation von     Gallamid    mit     Nitrosophenyl-          taurin.     



  <I>Beispiel:</I>       17    Gewichtsteile     Gallamid    werden in  340 Gewichtsteilen     Methanol    heiss gelöst  und zu der Lösung werden 35     Gewichtsteile          Nitrosophenyltaurin    in dem Masse gegeben,  wie die Gelbfärbung verschwindet. Der Farb  stoff der Formel:    
EMI0002.0001     
    fällt aus und wird durch     Filtration    isoliert.       In    Form seiner     Alkalisalze    ist er vorzüglich  löslich. Er gibt auf Baumwolle mittelst       Chrombeize    gedruckt sehr gleichmässige,  klare,     blauviolette    Drucke von guter Licht-.  Chlor- und Seifenec=htheit.



  Process for the preparation of a dye of the galloeyanin series. <B> E </B> s was found. that valuable dyes of the gallocyanin series are obtained if gallic acid or its derivatives, such as gallamide, gallanilide, gallic acid ester or even pyrogallol and derivatives of these bodies, with nitroso compounds of secondary or tertiary aromatic amines of the general formula:

    
EMI0001.0010
    condensed, where R is hydrogen, Alk \ -1. Denotes oxalkyl, sulfalkyl or aralkyl.



  The dyes obtained in this way can optionally be converted into further derivatives by the methods customary in the preparation of dyes of the gallocyanine series, for example by splitting off the carboxyl group, reduction to leuco dyes, condensation with mono- or diamines or their sulfonic acids, with aldehydes , Phenols,

          Naphthols or vaphtholsulfonic acids. The products obtained by this method of operation can, if necessary, also be subjected to a subsequent sulphonation.



  The dyes obtained in this way are distinguished by their excellent solubility, which is particularly desirable for printing dyes, by the clarity of the hue and by good fastness properties.



  The subject of the present patent is a process for the production of a new dye of the gallocyanin series by condensation of gallamide with nitrosophenyl taurine.



  <I> Example: </I> 17 parts by weight of gallamide are dissolved in 340 parts by weight of hot methanol and 35 parts by weight of nitrosophenyltaurine are added to the solution as the yellow coloration disappears. The color of the formula:
EMI0002.0001
    precipitates and is isolated by filtration. In the form of its alkali salts, it is extremely soluble. It gives very even, clear, blue-violet prints of good light- quality printed on cotton by means of chrome stain. Chlorine and soap security.

 

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines neuen Farbstoffes der Gallocyaninreihe, dadurch gekennzeichnet, dass man Gallamid mit Nitrosophenyltauizn kondensiert. Der erhal tene Farbstoff besitzt als Alkalisalz eine vorzügliche Löslichkeit und gibt mittelst. Chrombeize auf Baumwolle gedruckt sehr gleichmässige und klare, blauviolette Drucke von guter Licht-, Chlor- und Seifenechtheit. PATENT CLAIM: Process for the preparation of a new dye of the gallocyanin series, characterized in that gallamide is condensed with nitrosophenyltauizn. As an alkali salt, the dye obtained has excellent solubility and is medium Chrome stain printed on cotton very even and clear, blue-violet prints of good light, chlorine and soap fastness.
CH173263D 1932-04-14 1933-04-05 Process for the preparation of a dye of the gallocyanin series. CH173263A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE173263X 1932-04-14
CH169050T 1933-04-05

Publications (1)

Publication Number Publication Date
CH173263A true CH173263A (en) 1934-11-15

Family

ID=25718653

Family Applications (1)

Application Number Title Priority Date Filing Date
CH173263D CH173263A (en) 1932-04-14 1933-04-05 Process for the preparation of a dye of the gallocyanin series.

Country Status (1)

Country Link
CH (1) CH173263A (en)

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