CH183889A - Process for the preparation of a dye. - Google Patents

Process for the preparation of a dye.

Info

Publication number
CH183889A
CH183889A CH183889DA CH183889A CH 183889 A CH183889 A CH 183889A CH 183889D A CH183889D A CH 183889DA CH 183889 A CH183889 A CH 183889A
Authority
CH
Switzerland
Prior art keywords
dye
amino
preparation
tauride
carboxylic acid
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 CH183889A publication Critical patent/CH183889A/en

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

Description

  

  Verfahren zur Herstellung     eines    Farbstoffes.    Das     Hauptpatent    betrifft ein Verfahren  zur Herstellung eines Farbstoffes, bei dem  1-     Amino    - 4 -     halogenanthrachinon    - 2 -     carbon        -          säuretaurid    mit Anilin     kondensiert        wird.     



  Es wurde nun gefunden, dass man einen  ähnlichen, ebenfalls sehr wertvollen Farbstoff  erhält, wenn man     1-Amino-4-halogenanthra-          chinon-2-carbonsäuretaurid    mit     p-Toluidin     kondensiert. Die Kondensation wird zweck  mässig in Gegenwart von Wasser unter Zu  satz von säurebindenden Mitteln und Kataly  satoren     ausgeführt.     



  Der erhaltene Farbstoff, das     1-Amino-4-          (p    -     toluidino)    -     anthrachinon    - 2 -     carbonsäure-          taurid,    färbt Wolle aus saurem Bade in grün  stichig blauen Tönen.  



  <I>Beispiel:</I>  12 Teile     1-Amino-4-bromanthrachinon-2-          carbonsäuretaurid    (erhältlich zum Beispiel  durch Kondensation von 1-Aminoanthrachi-         non-2-carbonsäurechlorid    mit     Taurin    in al  kalischer Lösung und     Bromieren)    werden in  100 Teilen Wasser mit 12 Teilen     Natrium-          bicarbonat,    1 Teil Kupfersulfat und 15 Tei  len     p-Toluidin    so lange auf<B>90'</B> C erhitzt,  bis die     Farbstoffbildung    beendet ist. Nach  dem Erkalten scheidet man den Farbstoff in  der üblichen Weise ab.



  Process for the preparation of a dye. The main patent relates to a process for the production of a dye in which 1-amino-4-haloanthraquinone-2-carboxylic acid tauride is condensed with aniline.



  It has now been found that a similar, likewise very valuable dye is obtained if 1-amino-4-halogenanthraquinone-2-carboxylic acid tauride is condensed with p-toluidine. The condensation is expediently carried out in the presence of water with the addition of acid-binding agents and catalysts.



  The dye obtained, the 1-amino-4- (p - toluidino) - anthraquinone - 2 - carboxylic acid tauride, dyes wool from an acid bath in greenish blue shades.



  <I> Example: </I> 12 parts of 1-amino-4-bromoanthraquinone-2-carboxylic acid tauride (obtainable for example by condensation of 1-aminoanthraquinone-2-carboxylic acid chloride with taurine in an alkaline solution and bromination) are added to 100 Parts of water with 12 parts of sodium bicarbonate, 1 part of copper sulfate and 15 parts of p-toluidine are heated to 90 ° C until dye formation has ended. After cooling, the dye is separated off in the usual way.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines Farb stoffes, dadurch :gekennzeichnet, dass man 1- Amino - 4 - halogenanthrachinon- 2 - carbon - säuretaurid mit p-Toluidin kondensiert. Der erhaltene Farbstoff, das 1-Amino-4- (p - toluidino) - anthrachinon - 2 - carbousäure- taurid, PATENT CLAIM: Process for the production of a dye, characterized in that 1-amino-4-halogenanthraquinone-2-carbon-acid tauride is condensed with p-toluidine. The dye obtained, the 1-amino-4- (p - toluidino) - anthraquinone - 2 - carbous acid tauride, färbt Wolle aus saurem Bade in grün stichig blauen Tönen. dyes wool from an acid bath in green, blue tones.
CH183889D 1933-01-21 1933-12-20 Process for the preparation of a dye. CH183889A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE183889X 1933-01-21
CH178226T 1933-12-20

Publications (1)

Publication Number Publication Date
CH183889A true CH183889A (en) 1936-04-30

Family

ID=25720096

Family Applications (1)

Application Number Title Priority Date Filing Date
CH183889D CH183889A (en) 1933-01-21 1933-12-20 Process for the preparation of a dye.

Country Status (1)

Country Link
CH (1) CH183889A (en)

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