CH132223A - Process for the preparation of a dinitroarylaminodiarylamine. - Google Patents

Process for the preparation of a dinitroarylaminodiarylamine.

Info

Publication number
CH132223A
CH132223A CH132223DA CH132223A CH 132223 A CH132223 A CH 132223A CH 132223D A CH132223D A CH 132223DA CH 132223 A CH132223 A CH 132223A
Authority
CH
Switzerland
Prior art keywords
acid
dinitroarylaminodiarylamine
binding agent
preparation
brown
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 CH132223A publication Critical patent/CH132223A/en

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Description

  

  Verfahren zur Darstellung eines     Dinitroarylaminodiarylamins.       Gegenstand der     vorliegenden    Erfindung  ist ein Verfahren zur Darstellung eines     Di-          nitroarylaminodiarylamins    folgender Konsti  tution  
EMI0001.0005     
    welches dadurch gekennzeichnet ist, dass man       4-aminodiphenylamin-2'-methoxy-2-sulfosaures     Natron mit     1-Chlor-2    .     6-dinitrobenzol-4-sulfo-          methylanilid    in wässeriger Lösung in Gegen  wart eines säurebindenden Mittels bei einer  Temperatur, die zwischen 30 bis 100   C liegt,  kondensiert.  



  <I>Beispiel:</I>  316 Gewichtsteile     4-aminodiphenylamin-          2'-methoxy-2-sulfosaures    Natron und     246,5     Gewichtsteile     1-Chlor-    2 . 6 -     dinitrobenzol    - 4     -          sulfomethylanilid    werden in Wasser unter  Zusatz von überschüssigem     Natriumacetat       2-3 Stunden auf 80 bis 90   erwärmt. Das  nach dem Erkalten abgesaugte Reaktions  produkt kann aus Wasser umkristallisiert  werden und stellt ein braunes Pulver dar,  welches Wolle in schönem, braunem, wasch  echtem Farbton anfärbt.  



  Das Verfahren kann auch in der Weise  durchgeführt werden, dass man das Natrium  acetat durch andere säurebindende Mittel er  setzt, z. B. durch Kreide.  



  Im letzteren Falle vollzieht sich die     Auf-          ärbeitung    nach erfolgter Kondensation derart,  dass man das Reaktionsgemisch     sodaalkalisch     stellt, von abgeschiedener Kreide     abfiltriert     und den Farbstoff aus der Lauge in bekann  ter Weise durch     Aussalzen    isoliert. Oder  aber man stellt das Reaktionsgemisch nach  beendeter Kondensation schwach salzsauer,  saugt den abgeschiedenen     Farbstoff    ab, wäscht  mit Wasser neutral und kristallisiert aus  Wasser unter Zusatz äquivalenter Mengen  Soda um.



  Process for the preparation of a dinitroarylaminodiarylamine. The present invention relates to a process for the preparation of a di-nitroarylaminodiarylamine of the following constitution
EMI0001.0005
    which is characterized in that 4-aminodiphenylamine-2'-methoxy-2-sulfonic acid sodium with 1-chloro-2. 6-dinitrobenzene-4-sulfomethylanilide is condensed in aqueous solution in the presence of an acid-binding agent at a temperature between 30 and 100 ° C.



  <I> Example: </I> 316 parts by weight of 4-aminodiphenylamine-2'-methoxy-2-sulfonic acid soda and 246.5 parts by weight of 1-chloro-2. 6 - dinitrobenzene - 4 - sulfomethylanilide are heated to 80 to 90 for 2-3 hours in water with the addition of excess sodium acetate. The reaction product sucked off after cooling down can be recrystallized from water and is a brown powder which stains wool in a beautiful, brown, real wash color.



  The process can also be carried out in such a way that the sodium acetate is replaced by other acid-binding agents, e.g. B. by chalk.



  In the latter case, after the condensation has taken place, the work-up takes place in such a way that the reaction mixture is made alkaline with soda, the chalk that has separated out is filtered off and the dye is isolated from the lye in a known manner by salting out. Or the reaction mixture is made weakly acidic with hydrochloric acid after the condensation has ended, the deposited dye is filtered off with suction, washed neutral with water and recrystallized from water with the addition of equivalent amounts of soda.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines Dinitro- arylaminodiarylamins folgender Konstitution: EMI0002.0003 dadurch gekennzeichnet, dass man 4-amino- diphenylamin-2'-methoxy-2-sulfosaures Natron mit 1-Chlor-2 .6-dinitrobenzol-4-sulfomethyl- anilid in wässeriger Lösung in Gegenwart eines säurebindenden Mittels bei einer Tem peratur, die zwischen 30 bis 100 C liegt, kondensiert. Das Dinitroarylaminodiarylamin stellt ein braunes Pulver dar, welches Wolle in schönem, braunem, waschechtem Farbton anfärbt. PATENT CLAIM: Process for preparing a dinitroarylaminodiarylamine of the following constitution: EMI0002.0003 characterized in that 4-aminodiphenylamine-2'-methoxy-2-sulfonic acid sodium with 1-chloro-2 .6-dinitrobenzene-4-sulfomethyl anilide in aqueous solution in the presence of an acid-binding agent at a temperature which is between 30 and 100 ° C, condenses. Dinitroarylaminodiarylamine is a brown powder that dyes wool in a beautiful, brown, washable color. UNTERANSPRü CHE 1. Verfahren nach Patentanspruch; dadurch gekennzeichnet, dass man als säurebinden des Mittel Natriumacetat verwendet. 2. Verfahren nach Patentanspruch, dadurch gekennzeichnet, dass man als säurebinden des Mittel Kreide verwendet. SUBClaims 1. Method according to patent claim; characterized in that sodium acetate is used as the acid-binding agent. 2. The method according to claim, characterized in that chalk is used as the acid-binding agent.
CH132223D 1926-10-18 1927-10-17 Process for the preparation of a dinitroarylaminodiarylamine. CH132223A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE132223X 1926-10-18
CH129885T 1927-10-17

Publications (1)

Publication Number Publication Date
CH132223A true CH132223A (en) 1929-03-31

Family

ID=25711330

Family Applications (1)

Application Number Title Priority Date Filing Date
CH132223D CH132223A (en) 1926-10-18 1927-10-17 Process for the preparation of a dinitroarylaminodiarylamine.

Country Status (1)

Country Link
CH (1) CH132223A (en)

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