CH177133A - Process for the preparation of an acidic triphenylmethane dye. - Google Patents
Process for the preparation of an acidic triphenylmethane dye.Info
- Publication number
- CH177133A CH177133A CH177133DA CH177133A CH 177133 A CH177133 A CH 177133A CH 177133D A CH177133D A CH 177133DA CH 177133 A CH177133 A CH 177133A
- Authority
- CH
- Switzerland
- Prior art keywords
- acidic
- preparation
- phenetidine
- triphenylmethane dye
- process according
- Prior art date
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- Coloring (AREA)
Description
Verfahren zur Darstellung eines sauren Triphenylmethanfarbstoffes. Gr-genstand vorliegenden Patentes ist ein Verfahren zur Darstellung eines sauren Tri- phenylmethanfarbstoffes, welches darin be steht, da.ss man 4. 4'-Dichlorbenzophenon mit N-isobutyl-Bz-2 .
4-dimethyl-a-(p-chlorphe- nyl)-indol kondensiert, dann in ,dem so er haltenen Kondensationsprodukt die in 4- und 4'-Stellung befindlichen Chloratome mit p-Phenetidin umsetzt und die so erhaltene Verbindung mit einem sulfierenden Mittel behandelt.
<I>Beispiel:</I> 25 Gewichtsteile 4.4'-Dichlorbenzophe- non werden mit 31 Gewichtsteilen N-Isobu- tyl-Bz-2 . 4-dimethyl -a- (p-chlorphenyl)-indol bei Gegenwart von 20 Gewichtsteilen Phos- phorogychlorid durch mehrstündiges Kochen in 100 Gewichtsteilen Toluol kondensiert.
Nach Abdestillieren des Toluols und des noch vorhandenen Phosphorogychlorides wird :das Kondensationsprodukt 4 Stunden mit 60 Ge wichtsteilen p-Phenetidin bei 120 ver schmolzen.
Das überschüssige p-Phenetidin wird nach dem Erkalten der Schmelze .durch Ausrühren mit verdünnter Salzsäure, worin der entstandene blaue basische Farbstoff un löslich ist, entfernt, und letzterer nach dem Trocknen mit Schwefelsäure sulfiert. Man erhält auf diese Weise einen sauren Farb stoff folgender Konstitution:
EMI0002.0001
der als Na-Salz Wolle und Seide in leuch tenden grünstichigblauen Tönen anfärbt, die sich durch eine hervorragende Lichtechtheit und besonders schöneAbendfarbe auszeichnen.
Process for the preparation of an acidic triphenylmethane dye. The subject matter of the present patent is a process for the preparation of an acidic triphenylmethane dye, which consists in that one 4. 4'-dichlorobenzophenone with N-isobutyl-Bz-2.
4-dimethyl-a- (p-chlorophenyl) indole condensed, then in the condensation product obtained in this way, the chlorine atoms in the 4- and 4'-positions are reacted with p-phenetidine and the compound thus obtained with a sulfating agent treated.
<I> Example: </I> 25 parts by weight of 4.4'-dichlorobenzophenone are combined with 31 parts by weight of N-isobutyl-Bz-2. 4-dimethyl-a (p-chlorophenyl) indole condensed in the presence of 20 parts by weight of phosphorogychloride by boiling in 100 parts by weight of toluene for several hours.
After distilling off the toluene and the phosphorogychloride still present: the condensation product melted with 60 parts by weight of p-phenetidine at 120 for 4 hours.
After the melt has cooled, the excess p-phenetidine is removed by stirring with dilute hydrochloric acid, in which the blue basic dye is insoluble, and the latter is sulfated with sulfuric acid after drying. In this way, an acidic dye of the following constitution is obtained:
EMI0002.0001
which, as sodium salt, dyes wool and silk in bright greenish blue tones, which are characterized by excellent lightfastness and a particularly beautiful evening color.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE177133X | 1932-09-29 | ||
CH170094T | 1933-08-24 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH177133A true CH177133A (en) | 1935-05-15 |
Family
ID=25718879
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH177133D CH177133A (en) | 1932-09-29 | 1933-08-24 | Process for the preparation of an acidic triphenylmethane dye. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH177133A (en) |
-
1933
- 1933-08-24 CH CH177133D patent/CH177133A/en unknown
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