CH184188A - Process for the preparation of a dye of the anthraquinone series. - Google Patents

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

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Publication number
CH184188A
CH184188A CH184188DA CH184188A CH 184188 A CH184188 A CH 184188A CH 184188D A CH184188D A CH 184188DA CH 184188 A CH184188 A CH 184188A
Authority
CH
Switzerland
Prior art keywords
dye
anthraquinone series
anthraquinone
preparation
soluble
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 CH184188A publication Critical patent/CH184188A/en

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

Description

  

      Verfahren    zur Herstellung eines     Farbstoffes    der     Anthraehinonreihe.       Das Hauptpatent betrifft ein Verfahren  zur Herstellung eines Farbstoffes der     An-          thrachinonreihe,    bei dem der 1.     4-Di-p-tolui-          dinoanthrachinon    -     \?    -     carbonsäuremethylester     so lange mit einem sulfonierend wirkenden  Mittel behandelt wird, bis eine aufgearbeitete  Probe völlig wasserlöslich geworden ist.  



  Es wurde nun gefunden, dass man einen  ähnlich wertvollen Farbstoff der     Anthrachi-          norreihe    erhalten kann, wenn man den 1. 4       Di-p-cyclohexylanilino-anthrachinon-6-car-          bonsäuremethylester    so lange mit einem     sul-          fonierend    wirkenden Mittel behandelt, bis  eine aufgearbeitete Probe völlig wasserlös  lich geworden ist.  



  Der erhaltene Farbstoff färbt Wolle aus  schwach saurem Bade     in    klaren grünen Tö  nen von     ausgezeichneten    Echtheitseigen  schaften.  



  <I>Beispiel:</I>  10 Teile     1.4-Di-p-cyclohexylanilino-an-          thrachinon-6-carbonsäuremethylester    (berge-    stellt zum Beispiel durch Erhitzen des 1.     4-          Dichloranthrachinon    - 6 -     carbonsäuremethyl        -          esters    mit     p-Cyclohexylanilin    bei Gegenwart  von "wasserfreiem     Kaliumacetat    und wenig  Kupferacetat auf 140 bis 145   C) werden  bei etwa 5   C in 150 Teilen rauchender  Schwefelsäure, enthaltend<B>10%</B> S03, gelöst.

    Sobald     eine        aufgearbeitete    Probe eben     völlig     wasserlöslich geworden     ist,    giesst man in  etwa 1500 Teile Eiswasser und trennt den  Niederschlag ab, der aus heissem Wasser  unter Zusatz von Kochsalzlösung umkristal  lisiert wird.



      Process for the preparation of a dye of the anthraquinone series. The main patent relates to a process for the production of a dye of the anthraquinone series in which the 1st 4-di-p-toluidinoanthraquinone - \? - methyl carboxylate is treated with a sulfonating agent until a processed sample has become completely water-soluble.



  It has now been found that a similarly valuable dye of the anthraquinone series can be obtained if the 1. 4 di-p-cyclohexylanilino-anthraquinone-6-carboxylic acid methyl ester is treated with a sulfonating agent until one The processed sample has become completely water-soluble.



  The dye obtained dyes wool from a weakly acidic bath in clear green tones with excellent fastness properties.



  <I> Example: </I> 10 parts of 1,4-di-p-cyclohexylanilino-anthrachinone-6-carboxylic acid methyl ester (obtained for example by heating the 1,4-dichloroanthraquinone-6-carboxylic acid methyl ester with p-cyclohexylaniline in the presence of "anhydrous potassium acetate and a little copper acetate at 140 to 145 ° C), fuming sulfuric acid containing <B> 10% </B> SO3 is dissolved at about 5 ° C in 150 parts.

    As soon as a processed sample has become completely soluble in water, it is poured into about 1500 parts of ice water and the precipitate is separated off, which is recrystallized from hot water with the addition of saline solution.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines Farb stoffes der Anthrachinonreihe, dadurch ge- kennzeichnet, dass man den<B>1.</B> 4-Di-p-cyclo- hexylanilino-anthr achinon - 6 - oarbonsäureme- thylester so lange mit einem sulfonierend wirkenden Mittel behandelt, bis eine auf- gearbeitete Probe völlig wasserlöslich gewor den ist. PATENT CLAIM: A process for the production of a dye of the anthraquinone series, characterized in that the <B> 1. </B> 4-di-p-cyclohexylanilino-anthraquinone-6-carboxylic acid methyl ester is used for so long treated with sulfonating agents until a processed sample has become completely water-soluble. Der erhaltene Farbstoff färbt Wolle aus schwach saurem Bade in klaren grünen Tönen von ausgezeichneten Echtheitseigen schaften. The dye obtained dyes wool from a weakly acidic bath in clear green shades with excellent fastness properties.
CH184188D 1934-12-20 1935-01-16 Process for the preparation of a dye of the anthraquinone series. CH184188A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE184188X 1934-12-20
CH180697T 1935-01-16

Publications (1)

Publication Number Publication Date
CH184188A true CH184188A (en) 1936-05-15

Family

ID=25720457

Family Applications (1)

Application Number Title Priority Date Filing Date
CH184188D CH184188A (en) 1934-12-20 1935-01-16 Process for the preparation of a dye of the anthraquinone series.

Country Status (1)

Country Link
CH (1) CH184188A (en)

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