CH157567A - Process for the preparation of a vat dye of the anthraquinone series. - Google Patents
Process for the preparation of a vat dye of the anthraquinone series.Info
- Publication number
- CH157567A CH157567A CH157567DA CH157567A CH 157567 A CH157567 A CH 157567A CH 157567D A CH157567D A CH 157567DA CH 157567 A CH157567 A CH 157567A
- Authority
- CH
- Switzerland
- Prior art keywords
- preparation
- vat dye
- anthraquinone series
- vat
- anthraquinone
- Prior art date
Links
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
Terfahren zur Darstellung eines Küpenfarbstoffes der Anthraehinonreihe. Im Hauptpatent ist ein Verfahren "zur Darstellung eines Küpenfarbstoffes beschrie ben, bei dem 2.1-(N)-Anthrachinonakridon- 6-karborrsäurechlorid mit 1-Amino-4-methoxy- anthrachinon durch Erhitzen in einem Lö sungsmittel umgesetzt wird.
Es wurde nun gefunden, dass man in ganz analoger Weise einen güpenfarbstoff von ähnlichen wertvollen Eigenschaften er halten kann, wenn man 3.2-(S)-Anthra- chinonthioxanthon-Bz2-karbonsäurechlorid von der Formel
EMI0001.0013
mit 1- Amino- 5 .. benzoylaminoanthrachinon durch Erhitzen in einem Lösungsmittel kon densiert.
<I>Beispiel:</I> 4 Teile 3 . 2-(S)-Anthrachirronthioxanthoc)- Bz2-karbonsäurechlorid der oben angegebenen Formel, erhältlich aus 2-Chloranthrachinon- 3-karbonsäure durch Kondensation mit Thio- salicylsäure in wässeriger Lösung unter Zu satz von Ätzkali, nachfolgenden Ringschluss zum Thioxanthonderivat mit konzentrierter Schwefelsäure und Überführung in das Kar bonsäurechlorid durch Kochen mit Thionyl- chlorid in Nitrobenzollösung,
werden mit 3,4 Teilen 1-Amino-5-benzoylaminoanthra- chinon in 180 Teilen Nitrobenzol so lange auf 200-210 C erhitzt, bis keine Salzsäure mehr entweicht. Nach dem Erkalten wird der abgeschiedene gelbe Farbstoff abgesaugt, gewaschen und getrocknet. Der Farbstoff gibt mit alkalischem Hydrosulfit eine braune $üpe, aus der Baumwolle nach dem Oxy dieren und Seifen in klaren, goldgelben Tönen gefärbt wird.
Terfahren for the representation of a vat dye of the anthraehinone series. In the main patent, a process "for the preparation of a vat dye is described ben, in which 2.1- (N) -Anthraquinonakridon- 6-carboric acid chloride is reacted with 1-amino-4-methoxy-anthraquinone by heating in a solvent.
It has now been found that in a completely analogous manner, a high quality dye of similar valuable properties can be obtained if 3.2- (S) -anthrahinonthioxanthone-Bz2-carbonyl chloride of the formula
EMI0001.0013
condensed with 1- amino 5 .. benzoylaminoanthraquinone by heating in a solvent.
<I> Example: </I> 4 parts 3. 2- (S) -Anthrachirronthioxanthoc) - Bz2-carboxylic acid chloride of the formula given above, obtainable from 2-chloroanthraquinone-3-carboxylic acid by condensation with thiosalicylic acid in aqueous solution with the addition of caustic potash, subsequent ring closure to the thioxanthone derivative with concentrated sulfuric acid and conversion into the carbonic acid chloride by boiling with thionyl chloride in nitrobenzene solution,
are heated with 3.4 parts of 1-amino-5-benzoylaminoanthraquinone in 180 parts of nitrobenzene to 200-210 C until no more hydrochloric acid escapes. After cooling, the deposited yellow dye is filtered off with suction, washed and dried. With alkaline hydrosulphite, the dye gives a brown paste, from which cotton is dyed after oxidation and soaps in clear, golden-yellow tones.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE157567X | 1930-01-18 | ||
CH153488T | 1930-12-19 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH157567A true CH157567A (en) | 1932-09-30 |
Family
ID=25716215
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH157567D CH157567A (en) | 1930-01-18 | 1930-12-19 | Process for the preparation of a vat dye of the anthraquinone series. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH157567A (en) |
-
1930
- 1930-12-19 CH CH157567D patent/CH157567A/en unknown
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