CH190043A - Process for the preparation of a nitro dye. - Google Patents

Process for the preparation of a nitro dye.

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Publication number
CH190043A
CH190043A CH190043DA CH190043A CH 190043 A CH190043 A CH 190043A CH 190043D A CH190043D A CH 190043DA CH 190043 A CH190043 A CH 190043A
Authority
CH
Switzerland
Prior art keywords
preparation
nitro dye
dye
nitro
aminodiphenylamine
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 CH190043A publication Critical patent/CH190043A/en

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Description

  

  Verfahren zur Darstellung eines Nitrofarbstoffes.         Cregenstand    des vorliegenden Zusatzpaten  tes ist ein Verfahren zur Darstellung eines  Nitrofarbstoffes, welches dadurch gekenn  zeichnet ist, dass man     1-Chlor-2-nitrobenzol-4-          sulfodiäthyla,mid    mit     4-Aminodiphenylamin-          2-carbonsäure    kondensiert.    <I>Beispiel:</I>  228 Gewichtsteile     4-Aminodiphenylamin-          2-carbonsäure    werden in 106 Gewichtsteilen       calciniertem        Natriumcarbonat    und 500 Ge  wichtsteilen Wasser bei<B>60'</B> C gelöst.

   Nach  10stündigem Erhitzen zum Sieden mit 293  Gewichtsteilen     1-Chlor-2-nitrobenzol-4-sulfo-          diäthylamid    wird der erhaltene     Nitrofarb-          stoff    mit Chlornatrium     ausgesalzen.     



  Er stellt ein dunkelbraunes Pulver dar,  das Wolle und Seide in gelbbraunen Tönen    färbt, die sich durch gute Echtheitseigen  schaften, insbesondere sehr gute Lichtecht  heit     auszeichnen.  



  Process for the preparation of a nitro dye. Cregenstand of the present additional patent is a process for the preparation of a nitro dye, which is characterized in that 1-chloro-2-nitrobenzene-4-sulfodiäthyla, mid with 4-aminodiphenylamine-2-carboxylic acid condensed. <I> Example: </I> 228 parts by weight of 4-aminodiphenylamine-2-carboxylic acid are dissolved in 106 parts by weight of calcined sodium carbonate and 500 parts by weight of water at 60.degree.

   After heating to the boil for 10 hours with 293 parts by weight of 1-chloro-2-nitrobenzene-4-sulfodiethylamide, the nitro dye obtained is salted out with sodium chloride.



  It is a dark brown powder that colors wool and silk in yellow-brown tones, which are characterized by good fastness properties, in particular very good lightfastness.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines Nitro- farbstoffes, dadurchgekennzeichnet, dass man 1-Chlor-2-nitrobenzol-4-sulfodiäthylamid mit 4-Aminodiphenylamin-2-carbonsäure konden siert. Der so erhaltene Farbstoff stellt ein dun kelbraunes Pulver dar, das Wolle und Seide in gelbbraunen Tönen färbt, die sich durch gute Echtheitseigenschaften, insbesondere sehr gute Lichtechtheit auszeichnen. PATENT CLAIM: Process for the preparation of a nitro dye, characterized in that 1-chloro-2-nitrobenzene-4-sulfodiethylamide is condensed with 4-aminodiphenylamine-2-carboxylic acid. The dye thus obtained is a dark brown powder which dyes wool and silk in yellow-brown shades which are distinguished by good fastness properties, in particular very good light fastness.
CH190043D 1934-12-22 1935-12-18 Process for the preparation of a nitro dye. CH190043A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE190043X 1934-12-22
CH187696T 1935-12-18

Publications (1)

Publication Number Publication Date
CH190043A true CH190043A (en) 1937-03-31

Family

ID=25721573

Family Applications (1)

Application Number Title Priority Date Filing Date
CH190043D CH190043A (en) 1934-12-22 1935-12-18 Process for the preparation of a nitro dye.

Country Status (1)

Country Link
CH (1) CH190043A (en)

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