CH194356A - Process for the preparation of a water-insoluble azo dye. - Google Patents
Process for the preparation of a water-insoluble azo dye.Info
- Publication number
- CH194356A CH194356A CH194356DA CH194356A CH 194356 A CH194356 A CH 194356A CH 194356D A CH194356D A CH 194356DA CH 194356 A CH194356 A CH 194356A
- Authority
- CH
- Switzerland
- Prior art keywords
- water
- insoluble azo
- azo dye
- preparation
- dye
- Prior art date
Links
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Coloring (AREA)
Description
Verfahren zur Herstellung eines wasserunlöslichen Azofarbstoffes. Vorliegendes Patent bezieht sich auf ein Verfahren zur Herstellung eines wasserunlös- lichen Azofarbstoffes, dadurch gekennzeich net, dass man die Diazoverbindung von 2. 5- Dichlor-4-aminophenyl-methylsulfon mit Og- äthylmethylanilin vereinigt.
Der so erhaltene neue Farbstoff färbt Acetatseide unter Zusatz eines Dispergier- mittelg in kräftiger und lebhafter scharlach roter Nuance mit guten Echtheitseigenschaf ten.
<I>Beispiel:</I> 241 Teile 2.5-Dichlor-4-aminophenyl- methylsulfon werden mit Hilfe von 350 Tei len 39 % iger Nitrosylschwefelsäure diazo- tiert. Die so erhaltene Diazolösung wird mit. einer salzsauren Lösung von 155 Teilen Og- äthylme%hylanilin vereinigt. Zur Beendigung der Kupplung stumpft man die Mineralsäure mit Natriumacetat ab und ,saugt den entstan denen Farbstoff ab.
Process for the preparation of a water-insoluble azo dye. The present patent relates to a process for the production of a water-insoluble azo dye, characterized in that the diazo compound of 2.
The new dye thus obtained dyes acetate silk with the addition of a dispersant in a strong and lively scarlet red shade with good fastness properties.
<I> Example: </I> 241 parts of 2,5-dichloro-4-aminophenylmethylsulfone are diazotized with the aid of 350 parts of 39% nitrosylsulfuric acid. The diazo solution thus obtained is with. a hydrochloric acid solution of 155 parts of Og äthylme% hylanilin combined. To terminate the coupling, the mineral acid is blunted with sodium acetate and the resulting dye is filtered off with suction.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE194356X | 1935-04-04 | ||
CH190721T | 1936-03-26 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH194356A true CH194356A (en) | 1937-11-30 |
Family
ID=25722033
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH194356D CH194356A (en) | 1935-04-04 | 1936-03-26 | Process for the preparation of a water-insoluble azo dye. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH194356A (en) |
-
1936
- 1936-03-26 CH CH194356D patent/CH194356A/en unknown
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