CH153719A - Process for the preparation of a vat dye. - Google Patents
Process for the preparation of a vat dye.Info
- Publication number
- CH153719A CH153719A CH153719DA CH153719A CH 153719 A CH153719 A CH 153719A CH 153719D A CH153719D A CH 153719DA CH 153719 A CH153719 A CH 153719A
- Authority
- CH
- Switzerland
- Prior art keywords
- brown
- dye
- preparation
- vat
- vat dye
- Prior art date
Links
Landscapes
- Coloring (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
Verfahren zur Darstellung eines Nüpenfarbstoffes. Im Hauptpatent ist ein Verfahren zur Darstellung eines Küpenfarbstoffes aus dem Kondensationsprodukt von Bzl-Halogenbenz- anthron und 4.4'-Diaminodiphtaloylcarbazol durch Behandeln mit Alkali beschrieben.
Es wurde nun gefunden, dass man in ganz analoger Weise einen ähnlichen Küpenfarb- stoff erhält, wenn man das Kondensations produkt aus<B>1</B> Mol 2. 6-Dichlorbenzanthron und<B>1</B> Mol 5-Amino-4'-berizoyl-aminodiphta- loylearbazol, welch letzteres die Formel
EMI0001.0014
besitzt, mit einem sauren Kondensations mittel behandelt, zum Beispiel in konzen trierter Schwefelsäure erwärmt.
<I>Beispiel:</I> <B>10</B> Teile des Kondensationsproduktes aus <B>1</B> Mol 2.6-Dichlorbenzanthron und<B>1</B> Mol 5- Amino-4'-benzoylaminodiphtaloyleat-bazol (er hältlich z.
B. durch UmsetzLino, der vorer wähnten Komponenten mit Natriumacetat und Kupferverbindungen in siedendem Nitro- benzol) werden mit 200 Teilen konzentrierter Schwefelsäure so lange auf 50-521' <B>C</B> er wärmt, bis die anfangs blauroteLösungsfarbe in ein violettstichiges Braun übergegangen ist. Nach dem Erkalten giesst man das Re aktionsgemisch in Wasser, filtriert den Farb stoff ab und wäscht ihn neutral. Man erhält so den neuen Farbstoff als braunschwarzen Teig, der aus brauner Küpe die vegetabilische Faser in schönen rotbraunen Tönen färbt.
Der Farbstoff ist in trockenem Zustande ein braunschwarzes Pulver, das sich in konzen trierter Schwefelsäure mit violettstichig brau ner Farbe löst.
Process for the preparation of a pebble dye. The main patent describes a process for the preparation of a vat dye from the condensation product of Bzl-halobenzanthrone and 4,4'-diaminodiphtaloylcarbazole by treatment with alkali.
It has now been found that a similar vat dye is obtained in a completely analogous manner if the condensation product of <B> 1 </B> mol 2. 6-dichlorobenzanthrone and <B> 1 </B> mol 5- Amino-4'-berizoyl-aminodiphtaloyearbazole, which latter the formula
EMI0001.0014
owns, treated with an acidic condensation agent, for example heated in concentrated sulfuric acid.
<I> Example: </I> <B> 10 </B> parts of the condensation product from <B> 1 </B> mol 2,6-dichlorobenzanthrone and <B> 1 </B> mol 5- amino-4'- benzoylaminodiphtaloyleate-bazole (available e.g.
B. by UmsetzLino, the aforementioned components with sodium acetate and copper compounds in boiling nitrobenzene) are heated to 50-521 ° C with 200 parts of concentrated sulfuric acid until the initially bluish-red solution color turns into a violet-tinged color Brown has passed. After cooling, the reaction mixture is poured into water, the dye is filtered off and washed neutral. The new dye is thus obtained as a brown-black dough which, from a brown vat, dyes the vegetable fibers in beautiful red-brown shades.
When dry, the dye is a brown-black powder that dissolves in concentrated sulfuric acid with a purple-tinged brown color.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE153719X | 1930-04-05 | ||
CH149712T | 1930-10-03 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH153719A true CH153719A (en) | 1932-03-31 |
Family
ID=25715493
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH153719D CH153719A (en) | 1930-04-05 | 1931-03-20 | Process for the preparation of a vat dye. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH153719A (en) |
-
1931
- 1931-03-20 CH CH153719D patent/CH153719A/en unknown
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