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CH183897A - Process for the preparation of a dye of the triarylmethane series. - Google Patents

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

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Publication number
CH183897A
CH183897A CH183897DA CH183897A CH 183897 A CH183897 A CH 183897A CH 183897D A CH183897D A CH 183897DA CH 183897 A CH183897 A CH 183897A
Authority
CH
Switzerland
Prior art keywords
dye
preparation
triarylmethane series
triarylmethane
series
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 CH183897A publication Critical patent/CH183897A/en

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Description

  

  Verfahren zur Herstellung eines     Farbstoffes    der     Triarylmethanreihe.       Es wurde gefunden,     dass    man zu wert  vollen     Triarylmethanfarbstoffen    dadurch ge  langt, dass man auf solche     Farbstoffe    dieser  Reihe, die in     p-Stellung    zum     Karbinolkohlen-          stoffatom    einen austauschbaren     Substituen-          ten,        wie    Halogen, die     Alkogy-,        Sulfo-    oder       Nitrogruppe        enthalten,

      o- oder     p-Arylen-          diamine        bezw.    ihre     gernsubstitutionsprdukte     oder ihre einseitig in der     Aminogruppe        acy-          lierten        Derivate    einwirken     lässt.     



  Die nach dem Verfahren erhältlichen  Farbstoffe     zeichnen    sich     ,gegenüber    bekann  ten vergleichbaren Farbstoffen, die     unter          Verwendung    von Monoaminen     oder        m-Arylen-          diaminen    hergestellt sind, durch eine erhöhte  Lichtechtheit aus, und     ausserdem    lassen sie  sich im Gegensatz zu den bekannten Farb  stoffen rein weiss ätzen.  



  Gegenstand des vorliegenden     Patentes    ist  ein Verfahren zur Herstellung     eines    neuen    Farbstoffes der     Triarylmethanreihe.    Es ist  dadurch gekennzeichnet,     .dass    man den Farb  stoff der folgenden Formel:  
EMI0001.0037     
    mit     o-Phenylendiamin        kondensiert        und    den  Farbstoff bis zum     Eintritt    einer     Sulfogruppe,     deren Stellung     nicht    bekannt ist,     sulfiert.     



  <I>Beispiel:</I>  300     Gewichtsteile    des Farbstoffes der fol  genden Formel    
EMI0002.0001     
    werden mit 400     Gewichtsteilen        o-Phenylen-          diamin    auf 100   erwärmt, bis der Ausgangs  farbstoff nicht mehr     nachweisbar        ist.    Der  nach     Abtrennung    des überschüssigen     Diamins     erhaltene Farbstoff     wird        mit        Oleum        sulfiert,

       wobei eine     Sulfogruppe    in das Farbstoff  molekül     eintritt.    Er färbt Wolle und Seide  in sehr reinen Tönen     rotviolett    und gibt einen  rein weissen     Ätzef    f     ekt.  



  Process for the preparation of a dye of the triarylmethane series. It has been found that valuable triarylmethane dyes are obtained by using dyes of this series which have an exchangeable substituent in the p-position to the carbinol carbon atom, such as halogen, the alkogy, sulfo or nitro group,

      o- or p-arylenediamines respectively. their like substitution products or their derivatives acylated in the amino group on one side.



  The dyes obtainable by the process are distinguished from known comparable dyes prepared using monoamines or m-arylenediamines by increased lightfastness and, in contrast to the known dyes, they can be etched in pure white .



  The subject of the present patent is a process for the preparation of a new dye of the triarylmethane series. It is characterized by the fact that one uses the dye of the following formula:
EMI0001.0037
    condensed with o-phenylenediamine and the dye until a sulfo group, the position of which is not known, sulfated.



  <I> Example: </I> 300 parts by weight of the dye of the following formula
EMI0002.0001
    are heated to 100 with 400 parts by weight of o-phenylenediamine until the starting dye is no longer detectable. The dye obtained after separating off the excess diamine is sulfated with oleum,

       whereby a sulfo group enters the dye molecule. It dyes wool and silk in very pure shades of red-violet and gives a pure white etch effect.

 

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines Farbstof fes der Triarylmethanreihe, dadurch gekenn- zeichnet, dass man den Farbstoff der folgen den Formel: EMI0002.0023 mit o-Phenylendiamin kondensiert und den Farbstoff bis zum Eintritt einer Sulfogruppe sulfiert. . PATENT CLAIM: Process for the production of a dye of the triarylmethane series, characterized in that the dye of the following formula is used: EMI0002.0023 condensed with o-phenylenediamine and sulfated the dye until a sulfo group occurs. . Der Farbstoff färbt Wolle und Seide in sehr reinen Tönen rotviolett und gibt einen rein weissen Ätzeffekt. The dye dyes wool and silk in very pure shades of red-violet and gives a pure white etching effect.
CH183897D 1933-06-03 1934-05-24 Process for the preparation of a dye of the triarylmethane series. CH183897A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE183897X 1933-06-03
CH179451T 1934-05-24

Publications (1)

Publication Number Publication Date
CH183897A true CH183897A (en) 1936-04-30

Family

ID=25720301

Family Applications (1)

Application Number Title Priority Date Filing Date
CH183897D CH183897A (en) 1933-06-03 1934-05-24 Process for the preparation of a dye of the triarylmethane series.

Country Status (1)

Country Link
CH (1) CH183897A (en)

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