CH195657A - Process for the production of a condensation product. - Google Patents
Process for the production of a condensation product.Info
- Publication number
- CH195657A CH195657A CH195657DA CH195657A CH 195657 A CH195657 A CH 195657A CH 195657D A CH195657D A CH 195657DA CH 195657 A CH195657 A CH 195657A
- Authority
- CH
- Switzerland
- Prior art keywords
- production
- condensation product
- methylsulfone
- nitrobenzene
- yellow
- Prior art date
Links
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Coloring (AREA)
Description
Verfahren zur Herstellung eines Kondensationsproduktes. Es wurde gefunden, dass man :durch Kon densation von 1 - Halogen - 2 - nitrobenzol - 4- alkylsulfonen mit aromatischen Aminen Kon densationsprodukte der Diphenylaminreihe erhält, die sich insbesondere zum Färben von Lacken und von Azetatseide eignen.
Wird .diese Faser nach einer der üblichen Methoden mit .den obengenannten Kondensationsproduk ten gefärbt, so erhält man lebhafte grün stichiggelbe bis orange Farbtöne von vorzüg lichen Echtheitseigenschaften. Gegenüber den bekannten Reaktionsprodukten. aus 1-Ha- logen-2. 4--dinitro-chlorbenzol zeichnen sich die neuen Produkte durch bessere Lichteeht- heit aus.
Vorliegendes Patent bezieht sich nun auf ein Verfahren zur Herstellung eines Kon- densationsproIduktes,dadurch gekennzeichnet, dass man 1-Chlor-2-nitrobenzol-4-methylsul- fon mit Anilin kondensiert.
Das so erhaltene @2-Nitrodiphenylamin-4- methylsulfon kristallisiert aus Alkohol in gelben Kristallen vom Smp. 134 bis 135 und färbt Azetatseide in .gelben Tönen von hervorragender Lichtechtheit.
<I>Beispiel:</I> 5 Teile 1-Chlor-2-nitrobenzol-4-methyl- sulfon werden mit etwa 100 Teilen Alkohol und B Teilen Anilin mehrere Stunden unter Rückfluss zum :Sieden erhitzt. Beim Erkalten scheidet sich das Reaktionsprodukt, das 2- Nitro-diphenylamin-4-methylsulfon, in gelben Kristallen aus.
Process for the production of a condensation product. It has been found that: by condensation of 1 - halogen - 2 - nitrobenzene - 4 - alkyl sulfones with aromatic amines, condensation products of the diphenylamine series are obtained which are particularly suitable for dyeing paints and acetate silk.
If this fiber is dyed by one of the customary methods with the abovementioned condensation products, vivid green, pungent yellow to orange shades with excellent fastness properties are obtained. Compared to the known reaction products. from 1-halogen-2. 4 - dinitro-chlorobenzene, the new products are characterized by better light resistance.
The present patent relates to a process for the production of a condensation product, characterized in that 1-chloro-2-nitrobenzene-4-methylsulfone is condensed with aniline.
The @ 2-nitrodiphenylamine-4-methylsulfone thus obtained crystallizes from alcohol in yellow crystals with a melting point of 134 to 135 and dyes acetate silk in yellow shades of excellent lightfastness.
<I> Example: </I> 5 parts of 1-chloro-2-nitrobenzene-4-methylsulfone are refluxed with about 100 parts of alcohol and B parts of aniline for several hours. On cooling, the reaction product, 2-nitro-diphenylamine-4-methylsulfone, separates out in yellow crystals.
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE195657X | 1935-11-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH195657A true CH195657A (en) | 1938-02-15 |
Family
ID=5750713
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH195657D CH195657A (en) | 1935-11-28 | 1936-11-23 | Process for the production of a condensation product. |
Country Status (1)
| Country | Link |
|---|---|
| CH (1) | CH195657A (en) |
-
1936
- 1936-11-23 CH CH195657D patent/CH195657A/en unknown
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