CH123856A - Process for the preparation of a vat dye of the 2-perinaphtoxypenthiophen-2-indolindigo series. - Google Patents
Process for the preparation of a vat dye of the 2-perinaphtoxypenthiophen-2-indolindigo series.Info
- Publication number
- CH123856A CH123856A CH123856DA CH123856A CH 123856 A CH123856 A CH 123856A CH 123856D A CH123856D A CH 123856DA CH 123856 A CH123856 A CH 123856A
- Authority
- CH
- Switzerland
- Prior art keywords
- series
- preparation
- indolindigo
- vat
- perinaphtoxypenthiophen
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
- C09B7/00—Indigoid dyes
- C09B7/06—Indone-thionapthene indigos
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Indole Compounds (AREA)
Description
Verfahren zur Darstellung eines Küpenfarbstoffes der 2-Perinaphtogypenthiophen- 2-indolindigor eihe. Gegenstand des vorliegenden Patentes ist ein Verfahren zur Darstellung eines blauen Küpenfarbstoffes der 2-Perinaphtoxypenthio- phen-2-indolindigoreihe der Formel.:
EMI0001.0008
durch Kondensation von Perinaphtoxypen- thiophen mit einem 5.7-Dichlor-a-isatinkörper der Formel:
EMI0001.0012
worin R, einen sich bei der Kondensation ab spaltenden Rest bedeutet.
Trocken ist der Farbstoff ein violettes Pulver, in konzentrierter Schwefelsäure mit tiefblauer Farbe löslich, er gibt mit alka lischem Hydrosulfit eine gelbbraune güpe und färbt Baumwolle und Wolle in dieser Küpe in lebhaften rotstichig blauen Tönen von her vorragender Lichtechtheit.
Beispiel: 6,5 Teile 5.7-Dichlorisatin werden in etwa 150 Teilen Chlorbenzol suspendiert und mit Hilfe von 6,5 Teilen Phosphorpentachlorid in üblicher Weise in das 5. 7-Dichlor-a-isatin- chlorid übergeführt.
Die so erhaltene Lösung wird bei gewöhn licher Temperatur mit einer Lösung von 6 Teilen Perinaphtoxypenthiophen in etwa der zehnfachen Menge Chlorbenzol versetzt. Die Farbstoffbildung beginnt bereits in der gälte und wird durch Erwärmen auf dem Wasser bade beschleunigt. Sobald dieselbe beendigt ist, wird der Farbstoff filtriert, gewaschen und getrocknet. An Stelle des 5. 7-Dichlor-a-isatin- chlorids kann man mit gleichem Erfolge ein 5.7-Dichlor-a-isatinarylid verwenden,
Process for the preparation of a vat dye of the 2-Perinaphtogypenthiophen- 2-indolindigor series. The subject of the present patent is a process for the preparation of a blue vat dye of the 2-perinaphtoxypenthiophene-2-indolindigo series of the formula:
EMI0001.0008
by condensation of Perinaphtoxypenthiophene with a 5.7-dichloro-a-isatin body of the formula:
EMI0001.0012
wherein R, denotes a radical which splits off during the condensation.
When dry, the dye is a violet powder, soluble in concentrated sulfuric acid with a deep blue color, it gives a yellow-brown güpe with alkaline hydrosulphite and dyes cotton and wool in this vat in vivid reddish blue tones with excellent lightfastness.
Example: 6.5 parts of 5,7-dichloroisatin are suspended in about 150 parts of chlorobenzene and converted into the 5,7-dichloro-a-isatin chloride in the usual way with the aid of 6.5 parts of phosphorus pentachloride.
The solution obtained in this way is mixed with a solution of 6 parts of perinaphtoxypenthiophene in about ten times the amount of chlorobenzene at the usual temperature. The dye formation begins in the cold and is accelerated by warming up on the water bath. Once done, the dye is filtered, washed and dried. Instead of the 5. 7-dichloro-a-isatin chloride, a 5.7-dichloro-a-isatin chloride can be used with the same success,
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH123856T | 1926-03-29 | ||
CH121346T | 1926-03-29 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH123856A true CH123856A (en) | 1928-01-02 |
Family
ID=25709681
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH123856D CH123856A (en) | 1926-03-29 | 1926-03-29 | Process for the preparation of a vat dye of the 2-perinaphtoxypenthiophen-2-indolindigo series. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH123856A (en) |
-
1926
- 1926-03-29 CH CH123856D patent/CH123856A/en unknown
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