CH173265A - 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
CH173265A
CH173265A CH173265DA CH173265A CH 173265 A CH173265 A CH 173265A CH 173265D A CH173265D A CH 173265DA CH 173265 A CH173265 A CH 173265A
Authority
CH
Switzerland
Prior art keywords
series
dye
gallocyanin
preparation
gallamide
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 CH173265A publication Critical patent/CH173265A/en

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Description

  

  Verfahren zur Darstellung eines     Farbstoffes    der     Galloeyaniiireihe.       Es wurde gefunden, dass man zu wert  vollen     Farbstoffen    der     Gallocyaninreihe    ge  langt, wenn man     Gallussäure    oder deren De  rivate, wie     Gallamid,        Callanilid,        Gallussäure-          ester    oder auch     Pyrogallol    und Abkömmlinge  dieser Körper, mit     Nitrosoverbindungen    se  kundärer oder tertiärer aromatischer Amine  der allgemeinen Formel;.

    
EMI0001.0012     
    kondensiert, worin     P,.    Wasserstoff,     Alkyl,          Oxalky    1,     Sulfalky    1 oder     Aralkyl    bedeutet.  



  Die so erhaltenen Farbstoffe können ge  gebenenfalls nach den bei der     Herstellunu     von Farbstoffen der     Gallocyaninreihe    übli  chen Methoden in weitere Derivate über  geführt werden, zum Beispiel durch Ab  spaltung der Ca     rboxylgruppe,    Reduktion zu       Leukofarbstoffen.    Kondensation mit     Mono-          oder    Diaminen oder deren     Sulfonsäuren,     Die nach diesen Arbeitsweisen gewonnenen    Produkte können nötigenfalls noch einer  nachträglichen     Sulfonierung    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     Nitrosomethyl-          phenyltaurin.     



       Beispiel:   <I>,</I>  17     Gewichtsteile        Gallamid    werden in  <B>300</B> Gewichtsteilen 95%igem Alkohol heiss  gelöst, und in die Lösung werden 37 Ge  wichtsteile     Nitrosomethylphenyltaurin    im  Verlaufe mehrerer Stunden eingetragen und  unter     Rüekfluss    gekocht, bis die Gelbfärbung  verschwunden ist. Der Farbstoff von der  Formel    
EMI0002.0001     
    fällt aus.

   Er besitzt in Form seiner     Alkali-          oder        Ammoniumsalze    eine vorzügliche Lös  lichkeit     und    gibt auf Baumwolle     mittelst          Chrombeize    gedruckt klare,     rotstichig    blaue  Töne von guter Licht-, Chlor- und Seifen  echtheit.



  Process for the preparation of a dye of the Galloeyanii series. It has been found that valuable dyes of the gallocyanin series are obtained if gallic acid or its derivatives, such as gallamide, callanilide, gallic acid ester or even pyrogallol and derivatives of these bodies, with nitroso compounds of secondary or tertiary aromatic amines of the general formula ;.

    
EMI0001.0012
    condensed, where P ,. Is hydrogen, alkyl, oxalky 1, sulfalky 1 or aralkyl.



  The dyes obtained in this way can optionally be converted into further derivatives by the methods customary in the manufacture of dyes of the gallocyanin series, for example by splitting off the carboxyl group, or reducing to leuco dyes. Condensation with mono- or diamines or their sulfonic acids. The products obtained by these procedures can, if necessary, be subjected to a subsequent sulfonation.



  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 preparation of a new dye of the gallocyanin series by condensation of gallamide with nitrosomethylphenyltaurine.



       Example: <I>, </I> 17 parts by weight of gallamide are dissolved in <B> 300 </B> parts by weight of 95% alcohol, and 37 parts by weight of nitrosomethylphenyltaurine are added to the solution over the course of several hours and refluxed, until the yellow color has disappeared. The dye from the formula
EMI0002.0001
    was cancelled.

   In the form of its alkali or ammonium salts, it has excellent solubility and, when printed on cotton using chrome stain, gives clear, reddish-tinged blue tones of good light, chlorine and soap fastness.

 

Claims (1)

<B>PATENTANSPRUCH:</B> Verfahren zur Darstellung eines neuen 7? arbstoffes der Gallocyaninreihe, dadurch gekennzeichnet, dass man Gallamid mit Nitrosomethylphenyltaurin 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 Baumv=olle gedruckt sehr gleichmässige, klare. rotstichig blaue Drucke von guter Licht-, Chlor- und Seifenechtheit. <B> PATENT CLAIM: </B> Method for representing a new 7? dye of the gallocyanin series, characterized in that gallamide is condensed with nitrosomethylphenyltaurine. 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 chromium stain, gives it very even, clear colors when printed on wood. Red-tinged blue prints with good light, chlorine and soap fastness.
CH173265D 1932-04-14 1933-04-05 Process for the preparation of a dye of the gallocyanin series. CH173265A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE173265X 1932-04-14
CH169050T 1933-04-05

Publications (1)

Publication Number Publication Date
CH173265A true CH173265A (en) 1934-11-15

Family

ID=25718655

Family Applications (1)

Application Number Title Priority Date Filing Date
CH173265D CH173265A (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) CH173265A (en)

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