CH174272A - Process for the preparation of a nitroarylaminoarylamine. - Google Patents
Process for the preparation of a nitroarylaminoarylamine.Info
- 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
Links
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
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)
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) |
-
1933
- 1933-11-15 CH CH174272D patent/CH174272A/en unknown
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