CH183892A - Process for the preparation of a dye. - Google Patents

Process for the preparation of a dye.

Info

Publication number
CH183892A
CH183892A CH183892DA CH183892A CH 183892 A CH183892 A CH 183892A CH 183892D A CH183892D A CH 183892DA CH 183892 A CH183892 A CH 183892A
Authority
CH
Switzerland
Prior art keywords
dye
amino
preparation
carboxylic acid
toluidine
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 CH183892A publication Critical patent/CH183892A/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 Farb  stoff erhält, wenn man     .1-Amino-4-halogen-          anthrachinon-2-carbonsäuremethyltaurid    mit       p-Toluidin        kondensiert.        Die    Kondensation  wird zweckmässig in Gegenwart von Wasser  unter Zusatz von säurebindenden Mitteln und  Katalysatoren ausgeführt.  



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



  <I>Beispiel:</I>  12 Teile     .1-Amino-4-bromanthrachinon-2-          carbonsäuremethyltaurid    (erhältlich zum Bei  spiel durch     Kondensation    von 1-Amino-         anthrachinon-2-carbonsäurechlorid    mit     Me-          thyltaurin    in alkalischer Lösung und     Bromie-          ren)    werden in ,100 Teilen Wasser     mit    12  Teilen     Natriumbicarbonat,    1 Teil Kupfer  sulfat und 15     Teilen        p-Toluidin    so lange auf  <B>90'</B> C erhitzt, bis die     Farbstoffbildung    be  endet 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, also very valuable dye is obtained if 1-amino-4-halogenanthraquinone-2-carboxylic acid methyl 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, 1-amino-4- (p - toluidino) - anthraquinone - 2 - carboxylic acid methyl tauride, dyes wool from an acid bath in greenish blue shades.



  <I> Example: </I> 12 parts .1-Amino-4-bromoanthraquinone-2-carboxylic acid methyl tauride (obtainable, for example, by condensation of 1-amino anthraquinone-2-carboxylic acid chloride with methyl taurine in an alkaline solution and bromine ren) are heated in .100 parts of water with 12 parts of sodium bicarbonate, 1 part of copper sulfate and 15 parts of p-toluidine to <B> 90 '</B> C until the 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 <B>-2)</B> - carbon - s.äuremethyltaurid mit p-Toluidin konden siert. Der erhaltene Farbstoff, das 1-Amino-4- (p - toluidino) - anthrachinon - 2: - carbonsäure- methyltaurid, färbt Wolle aus saurem Bade in grünstichig blauen Tönen. PATENT CLAIM: A process for producing a dye, characterized in that 1. - Amino - 4 - halogenanthraquinone <B> -2) </B> - carbon - acid methyl tauride is condensed with p-toluidine. The dye obtained, 1-amino-4- (p - toluidino) - anthraquinone - 2: - carboxylic acid methyltauride, dyes wool from an acid bath in greenish blue tones.
CH183892D 1933-01-21 1933-12-20 Process for the preparation of a dye. CH183892A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE183892X 1933-01-21
CH178226T 1933-12-20

Publications (1)

Publication Number Publication Date
CH183892A true CH183892A (en) 1936-04-30

Family

ID=25720099

Family Applications (1)

Application Number Title Priority Date Filing Date
CH183892D CH183892A (en) 1933-01-21 1933-12-20 Process for the preparation of a dye.

Country Status (1)

Country Link
CH (1) CH183892A (en)

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