CH173269A - 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
CH173269A
CH173269A CH173269DA CH173269A CH 173269 A CH173269 A CH 173269A CH 173269D A CH173269D A CH 173269DA CH 173269 A CH173269 A CH 173269A
Authority
CH
Switzerland
Prior art keywords
series
gallocyanin
dye
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 CH173269A publication Critical patent/CH173269A/en

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Description

  

  Verfahren zur Darstellung eines     Farbstoffes    der     Galloeyaninreihe.       Es 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:

    
EMI0001.0011     
    kondensiert, worin R Wasserstoff,     Alkyl,          Oxalkyl,        Sulfalkyl    oder     Aralkyl    bedeutet.  



  Die so erhaltenen Farbstoffe können ge  gebenenfalls nach .den bei der Herstellung  von Farbstoffen der     Gallocyaninreihe    übli  chen 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       Naphtholsulfonsäuren.    Die nach diesen Ar  beitsweisen     gewonnenen    Produkte können  nötigenfalls noch einer nachträglichen     Sul-          fonierung    unterworfen werden.

    



  Die so erhältlichen 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-          benzyltaurin.     



  <I>Beispiel:</I>  17     Gewichtsteile        Gallamid    werden in  300     Gewichtsteilen        95%igem    Alkohol heiss  gelöst, und in die Lösung werden 48 Ge  wichtsteile     Nitrosophenylbenzyltaurin    einge  tragen in dem Masse, wie die Gelbfärbung  verschwindet. Der Farbstoff der Formel;    
EMI0002.0001     
    fällt aus. Er besitzt als Alkali- oder Am  moniumsalz eine vorzügliche Löslichkeit und  gibt auf Baumwolle     mittelst    Chrombeize ge  druckt sehr gleichmässige, blaue Töne von  guter Licht-, Chlor- und Seifenechtheit.



  Process for the preparation of a dye of the galloeyanin series. It has been 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 kind Formula:

    
EMI0001.0011
    condensed, wherein R is hydrogen, alkyl, oxalkyl, sulfalkyl or aralkyl.



  The dyes obtained in this way can optionally be converted into further derivatives according to the methods customary in the production of dyes of the gallocyanin 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 naphtholsulfonic acids. The products obtained by this method of operation can, if necessary, also be subjected to a subsequent sulphonation.

    



  The dyes obtainable in this way are distinguished by an 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 preparation of a new dye of the gallocyanin series by condensation of gallamide with nitrosophenyl benzyl taurine.



  <I> Example: </I> 17 parts by weight of gallamide are dissolved in 300 parts by weight of 95% alcohol, and 48 parts by weight of nitrosophenylbenzyltaurine are added to the solution as the yellow coloration disappears. The dye of the formula;
EMI0002.0001
    was cancelled. As an alkali or ammonium salt, it has excellent solubility and, when printed on cotton with a chrome stain, gives very even, blue tones of good light, chlorine and soap fastness.

 

Claims (1)

PATENTANSPRUCH Verfahren zur Darstellung eines neuen Farbstoffes der Gallocyaninreihe, dadurch gekennzeichnet, dass man Gallamid mit Nitrosoph enylbenzyltaurin kondensiert. Der entstandene Farbstoff enthält eine Sulfo- gruppe in der Seitenkette. Er besitzt als Al kali- oder Ammoniumsalz eine vorzügliche Löslichkeit und gibt mittelst Chrombeize auf Baumwolle gedruckt sehr gleichmässige, blaue Drucke von guter Licht-, Chlor- und Seifen echtheit. PATENT CLAIM Process for the preparation of a new dye of the gallocyanin series, characterized in that gallamide is condensed with nitrosopheneylbenzyltaurine. The resulting dye contains a sulfo group in the side chain. As an alkali or ammonium salt, it has excellent solubility and, by means of chrome stain, gives very even, blue prints of good fastness to light, chlorine and soap when printed on cotton.
CH173269D 1932-04-14 1933-04-05 Process for the preparation of a dye of the gallocyanin series. CH173269A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE173269X 1932-04-14
CH169050T 1933-04-05

Publications (1)

Publication Number Publication Date
CH173269A true CH173269A (en) 1934-11-15

Family

ID=25718659

Family Applications (1)

Application Number Title Priority Date Filing Date
CH173269D CH173269A (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) CH173269A (en)

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