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CH168934A - 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
CH168934A
CH168934A CH168934DA CH168934A CH 168934 A CH168934 A CH 168934A CH 168934D A CH168934D A CH 168934DA CH 168934 A CH168934 A CH 168934A
Authority
CH
Switzerland
Prior art keywords
dye
preparation
triarylmethane series
mol
triarylmethane
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 CH168934A publication Critical patent/CH168934A/en

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

Description

  

  Verfahren zur Darstellung eines Farbstoffes der     Triarylmethanreihe.       Es wurde gefunden, dass man zu einem  wertvollen Farbstoff der     Triarylmethanreihe     gelangt, wenn man 1     Mol.        o-Sulfobenzaldehyd     mit 2     Mol.        Benzylphenyltaurin    kondensiert  und die so erhaltene     Leukoverbindung    zum       Farbstoff    oxydiert.  



  <I>Beispiel:</I>  1     Mol.    o     -Sulfobenzaldehyd    wird mit  2     Mol.        Benzylphenyltaurin    in schwach saurer  Lösung kondensiert und die     Leukoverbindung     wird in üblicher Weise zum Farbstoff oxy  diert. In der     Karbinolform    hat der     Farbstoff     folgende Formel:  
EMI0001.0016     
    Der     Farbstoff    ist in Form seiner     Alkalimetall-          salze    ein violettes, bronzierendes, wasserlös  liches Pulver und färbt Wolle und Seide in       grünstichig    blauen Tönen.



  Process for the preparation of a dye of the triarylmethane series. It has been found that a valuable dyestuff of the triarylmethane series is obtained if 1 mole of o-sulfobenzaldehyde is condensed with 2 moles of benzylphenyltaurine and the leuco compound thus obtained is oxidized to the dyestuff.



  <I> Example: </I> 1 mol. O-sulfobenzaldehyde is condensed with 2 mol. Benzylphenyltaurine in a weakly acidic solution and the leuco compound is oxidized to the dye in the usual way. In the carbinol form, the dye has the following formula:
EMI0001.0016
    In the form of its alkali metal salts, the dye is a violet, bronzing, water-soluble powder and dyes wool and silk in greenish blue tones.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines Farb stoffes der Triarylmethanreihe, dadurch ge kennzeichnet, dass man 1 Mol. o-Sulfo.benzal- dehyd mit 2 Mol. Benzylphenyltaurin kon densiert und die so erhaltene Leukoverbindung zum Farbstoff oxydiert. Der neue Farbstoff färbt Wolle und Seide in grünstichig blauen Tönen. PATENT CLAIM: Process for the preparation of a dye of the triarylmethane series, characterized in that 1 mol. O-sulfo.benzaldehyde is condensed with 2 mol. Benzylphenyltaurine and the leuco compound thus obtained is oxidized to the dye. The new dye dyes wool and silk in greenish blue tones.
CH168934D 1931-09-12 1932-09-07 Process for the preparation of a dye of the triarylmethane series. CH168934A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE168934X 1931-09-12
CH165834T 1932-09-07

Publications (1)

Publication Number Publication Date
CH168934A true CH168934A (en) 1934-04-30

Family

ID=25718180

Family Applications (1)

Application Number Title Priority Date Filing Date
CH168934D CH168934A (en) 1931-09-12 1932-09-07 Process for the preparation of a dye of the triarylmethane series.

Country Status (1)

Country Link
CH (1) CH168934A (en)

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