CH181250A - Process for the production of a new dye. - Google Patents
Process for the production of a new dye.Info
- Publication number
- CH181250A CH181250A CH181250DA CH181250A CH 181250 A CH181250 A CH 181250A CH 181250D A CH181250D A CH 181250DA CH 181250 A CH181250 A CH 181250A
- Authority
- CH
- Switzerland
- Prior art keywords
- production
- new dye
- parts
- dianiline
- dichloro
- Prior art date
Links
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
Verfahren zur Herstellung eines neuen Farbstoffes. Wir haben gefunden, dass man einen neuen Farbstoff erhält, der sich in Kohlenwasser stoff-Lösemitteln löst und zum Färben von Ölen, Spirituosen, Wachsen und Kautschuk geeignet ist, durch aufeinanderfolgendes Be handeln von 2:3-Dichlor-1:4-dianilinarrthra- chinon mit Natriumhydrosulfid, wobei zwei Chloratome durch -SH-Gruppen ersetzt werden, und. mit Cetylbromid, was die Bildung des entsprechenden Bisthioäthers von der wahr scheinlichen Formel
EMI0001.0009
<B>zur</B> Folge hat.
<I>Beispiel:</I> 138 Teile 2:3-Dichlor-1:4-dianilin-anthra- chinon (erhalten durch Einwirkung von Anilin auf 1:2:3:4-Tetrachloranthrachinon), 1500 Teile Alkohol und 225 Teile einer 30 /oigen wässerigen Natriumhydrosulfidlö- sung werden gerührt und unter einem Rück flusskühler 5 Stunden lang gekocht. Nach Abfiltrieren von unverändertem Ausgangs material wird die dunkelgrüne Lösung mit Salzsäure angesäuert. Mai) filtriert und wäscht das Produkt mit Wasser.
Eine wie oben hergestellte Paste von 1:4 Dianilin-2:3-dimercaptananthrachinon wird in 1000 Teile Pyridin und 100 Teile Cetylbromid eingerührt und das Ganze während einer halben Stunde auf 90-950C erhitzt. Beim Abkühlen und Ansäuern mit Salzsäure scheidet sich das Produkt als eine grüne, wachsähnlicbe Masse aus, die man abfiltriert, mit Wasser wäscht und trocknet.
Die so erhaltene, neue Verbindung löst sich leicht in Benzol und Petroleum unter Bildung dnnkelgrürrer Lösungen.
Process for the production of a new dye. We have found that a new dye can be obtained which dissolves in hydrocarbon solvents and is suitable for coloring oils, spirits, waxes and rubber by treating 2: 3-dichloro-1: 4-dianilinarrthra- quinone with sodium hydrosulfide, two chlorine atoms being replaced by -SH groups, and. with cetyl bromide, resulting in the formation of the corresponding bisthioether from the probable formula
EMI0001.0009
<B> to </B> result.
<I> Example: </I> 138 parts of 2: 3-dichloro-1: 4-dianiline-anthraquinone (obtained by the action of aniline on 1: 2: 3: 4-tetrachloroanthraquinone), 1500 parts of alcohol and 225 parts a 30% aqueous sodium hydrosulfide solution is stirred and boiled under a reflux condenser for 5 hours. After filtering off the unchanged starting material, the dark green solution is acidified with hydrochloric acid. May) filtered and washed the product with water.
A paste of 1: 4 dianiline-2: 3-dimercaptananthraquinone prepared as above is stirred into 1000 parts of pyridine and 100 parts of cetyl bromide and the whole is heated to 90-950C for half an hour. On cooling and acidification with hydrochloric acid, the product separates out as a green, wax-like mass, which is filtered off, washed with water and dried.
The new compound thus obtained dissolves easily in benzene and petroleum with the formation of thinner solutions.
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB181250X | 1950-12-18 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH181250A true CH181250A (en) | 1935-12-15 |
Family
ID=10107071
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH181250D CH181250A (en) | 1950-12-18 | 1935-03-13 | Process for the production of a new dye. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH181250A (en) |
-
1935
- 1935-03-13 CH CH181250D patent/CH181250A/en unknown
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