CH174272A - Process for the preparation of a nitroarylaminoarylamine. - Google Patents

Process for the preparation of a nitroarylaminoarylamine.

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Publication number
CH174272A
CH174272A CH174272DA CH174272A CH 174272 A CH174272 A CH 174272A CH 174272D A CH174272D A CH 174272DA CH 174272 A CH174272 A CH 174272A
Authority
CH
Switzerland
Prior art keywords
acid
preparation
red
binding agent
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 CH174272A publication Critical patent/CH174272A/en

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Description

  

  Verfahren zur Darstellung eines     Nitroarylaminoarylamins.       Gegenstand des vorliegenden Patentes ist  ein Verfahren zur Darstellung eines     Nitroaryl-          amittoarylamins    der     folgenden    Konstitution:  
EMI0001.0005     
    dadurch gekennzeichnet,     da.ss    man     4-Amino-          diphettylarnin-2-sulfosäure    mit     4-Chlor-3-nitro-          benzol-1-carbonsäure    in Form der Natrium  salze in Gegenwart eines säurebindenden  Mittels kondensiert.  



  <I>Beispiel:</I>  264 Gewichtsteile     4-Aminodiphettylamin-          2-sttlfosättre    und 202 Gewichtsteile     4-Chlor-          3-nitrobenzoesäure    werden unter Zusatz von  160 Gewichtsteilen Soda in 2500 bis 3000  Gewichtsteilen Wasser gelöst und so lange  zum Sieden erhitzt, als die     Farbstoffbildung     noch zunimmt. Die Lösung färbt sich all  mählich intensiv rotbraun. Der auf übliche  Weise als     Natriumsalza    isolierte     Farbstoff     bildet ein rotbraunes Pulver, das sich in  warmem Wasser leicht löst und Wolle sehr  gleichmässig rotbraun anfärbt.



  Process for the preparation of a nitroarylaminoarylamine. The subject of the present patent is a process for the preparation of a nitroaryl amittoarylamine of the following constitution:
EMI0001.0005
    characterized in that 4-aminodiphettylarnine-2-sulfonic acid is condensed with 4-chloro-3-nitrobenzene-1-carboxylic acid in the form of the sodium salts in the presence of an acid-binding agent.



  <I> Example: </I> 264 parts by weight of 4-aminodiphettylamine-2-sttlfosättre and 202 parts by weight of 4-chloro-3-nitrobenzoic acid are dissolved in 2500 to 3000 parts by weight of water with the addition of 160 parts by weight of soda and heated to the boil for as long as the dye formation still increases. The solution gradually turns an intense reddish brown. The dye, isolated in the usual way as sodium salt, forms a red-brown powder that dissolves easily in warm water and dyes wool very evenly red-brown.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines Nitroaryl- aminoarylamins der folgenden Konstitution EMI0001.0020 dadurch gekennzeichnet, dass man 4-Amino- diphenylamitt-2-sulfosäure mit 4-Chlor-3-nitro- benzol-l-carbonsäure in Form der Natrium salze in Gegenwart eines säurebindenden Mittels kondensiert. Der als Natriumsalz isolierte Farbstoff bildet ein rotbraunes Pulver, das sich in warmem Wasser leicht löst und Wolle sehr gleichmässig rotbraun anfärbt. UNTERANSPRUCH: Verfahren nach Patentanspruch, dadurch gekennzeichnet, dass man als säurebindendes Mittel Soda verwendet. PATENT CLAIM: Process for the preparation of a nitroaryl aminoarylamine of the following constitution EMI0001.0020 characterized in that 4-aminodiphenylamide-2-sulfonic acid is condensed with 4-chloro-3-nitrobenzene-1-carboxylic acid in the form of the sodium salts in the presence of an acid-binding agent. The dye, isolated as the sodium salt, forms a red-brown powder that dissolves easily in warm water and dyes wool very evenly red-brown. SUBCLAIM: Process according to claim, characterized in that soda is used as the acid-binding agent.
CH174272D 1932-11-17 1933-11-15 Process for the preparation of a nitroarylaminoarylamine. CH174272A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE174272X 1932-11-17
CH172073T 1933-11-15

Publications (1)

Publication Number Publication Date
CH174272A true CH174272A (en) 1934-12-31

Family

ID=25719148

Family Applications (1)

Application Number Title Priority Date Filing Date
CH174272D CH174272A (en) 1932-11-17 1933-11-15 Process for the preparation of a nitroarylaminoarylamine.

Country Status (1)

Country Link
CH (1) CH174272A (en)

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