CH126825A - Process for the preparation of a sulfur-containing indigoid vat dye. - Google Patents
Process for the preparation of a sulfur-containing indigoid vat dye.Info
- Publication number
- CH126825A CH126825A CH126825DA CH126825A CH 126825 A CH126825 A CH 126825A CH 126825D A CH126825D A CH 126825DA CH 126825 A CH126825 A CH 126825A
- Authority
- CH
- Switzerland
- Prior art keywords
- sulfur
- preparation
- indigoid
- vat dye
- dye
- Prior art date
Links
Landscapes
- Pyridine Compounds (AREA)
Description
Verfahren zur Darstellung eines schwefelhaltigen indigoiden Itüpenfarbstoffes. Es wurde gefunden, ,dass sehr wertvolle schwefelhaltige indigo.ide Küpenfarbstoffe erhalten werden, wenn man Monoalkyl-, Aral- kyl- oder Aryläther des 4-Merkapto-l-naph- tols oder seiner Derivate mit den zur Her stellung von indigoiden Farbstoffen dienenden Komponenten,
wie zum Beispiel Isatinchlo- ride, Isatinanilide usw., kondensiert.
Gegenstand vorliegender Erfindung ist ein Verfahren zur Darstellung eines schwe felhaltigen indigoiden Küpenfarbstoffes aus dem Monomethy läther des 4-Merkapto-l-oxy- naphtalins; das Verfahren ist dadurch ge kennzeichnet, JA man den Monomethyläther des 4-Merkapto-l-oxyna.phtalins mit 5.7- Dibromisatinhalogeni:
d, zum Beispiel 5.7- Dibromisatinchlorid, kondensiert. Der erhal tene Farbstoff löst sich in Schwefelsäure schwer, leichter in Pyridin mit blaugrüner Farbe und färbt die Faser aus der alkali schen, gelben Hydrosulfitküpe klar und echt grünstichig blau an.
<I>Beispiel:</I> 190 Gewichtsteile des Monomethyläthers des 4-Merkapto-l-oxyna.phtalins (Ber. 48, Seite 128) werden in 2000 Gewichtsteilen Benzol gelöst, mit 5. 7-Dibromisatinchlorid, auf übliche Weise aus 305 Gewichtsteilen 5.7-Dibromisatin und 230 Gewichtsteilen Fhosphorpentachlorid in Chlorbenzollösung hergestellt, vereinigt.
Nach kurzer Zeit kri stallisiert der Farbstoff; er ist in Schwefel säure schwer, besser in Pyridin, mit blau grüner Farbe löslich und färbt die Faser aus der gelben, alkalischen Hydrosulfitküpe klar und echt grünstichig blau an.
Process for the preparation of a sulfur-containing indigoid itupene dye. It has been found that very valuable sulfur-containing indigoid vat dyes are obtained if monoalkyl, aralkyl or aryl ethers of 4-mercapto-1-naphthol or its derivatives are used with the components used to produce indigoid dyes ,
such as isatinchlorides, isatinanilides, etc., condensed.
The present invention relates to a process for the preparation of a sulfur-containing indigoid vat dye from the monomethyl ether of 4-mercapto-l-oxynaphthalene; the process is characterized by the fact that the monomethyl ether of 4-mercapto-l-oxyna.phtalins is used with 5.7-dibromoisatin halides:
d, for example 5.7-dibromoisatin chloride, condensed. The dye obtained is difficult to dissolve in sulfuric acid, more easily in pyridine with a blue-green color and stains the fibers from the alkaline, yellow hydrosulfite vat clear and really greenish blue.
<I> Example: </I> 190 parts by weight of the monomethyl ether of 4-mercapto-l-oxyna.phtalins (Ber. 48, page 128) are dissolved in 2000 parts by weight of benzene, with 5. 7-dibromoisatin chloride, in the usual way from 305 Parts by weight of 5,7-dibromoisatin and 230 parts by weight of phosphorus pentachloride prepared in chlorobenzene solution, combined.
After a short time, the dye crystallizes; it is difficult to dissolve in sulfuric acid, better in pyridine, with a blue-green color and stains the fibers from the yellow, alkaline hydrosulfite vat clear and really greenish blue.
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE126825X | 1926-04-03 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH126825A true CH126825A (en) | 1928-07-02 |
Family
ID=5659825
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH126825D CH126825A (en) | 1926-04-03 | 1927-03-18 | Process for the preparation of a sulfur-containing indigoid vat dye. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH126825A (en) |
-
1927
- 1927-03-18 CH CH126825D patent/CH126825A/en unknown
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