CH104929A - Process for the production of a new indigoid dye. - Google Patents
Process for the production of a new indigoid dye.Info
- Publication number
- CH104929A CH104929A CH104929DA CH104929A CH 104929 A CH104929 A CH 104929A CH 104929D A CH104929D A CH 104929DA CH 104929 A CH104929 A CH 104929A
- Authority
- CH
- Switzerland
- Prior art keywords
- production
- new
- brown
- dye
- indigoid dye
- Prior art date
Links
Landscapes
- Coloring (AREA)
Description
Verfahren zur Herstellung eines neuen indigoiden Farbstoffes. Es wurde gefunden, dass man einen Küpen- farbstoff herstellen kann, wenn man 1#2-Thio- naphthisatin, welches durch Kondensieren von 1-Thionaphthol mit Oxalylchlorid erhalten wer den kann, mit dem 1 # 2-Naphtlithioindoxyl kondensiert.
Der so erhaltene Farbstoff stellt ein dunkelrotes Pulver dar, das sich in Schwe felsäure mit blauer Farbe löst; er gibt mit Hydrosulfit und Natronlauge eine gelbbraune Küpe, aus weleherBaumwolle in violettbraunen Tönen gefärbt wird, die beim Seifen in ein vorzüglich echtes Rotbraun übergehen.
Beispiel: 214 Teile 1 # 2-Thionaphthisatin und 200 Teile 1-2-Naphththioindoxyl werden in 4000 Teilen Alkohol suspendiert und nach Beigabe von 5 Teilen Soda zum Sieden erhitzt. Nach kurzem Kochen ist die Kondensation beendet. Der in sehr guter Ausbeute abgeschiedene Farbstoff wird filtriert, gewaschen und ge trocknet.
Process for the production of a new indigoid dye. It has been found that a vat dye can be produced if 1 # 2-thionaphthisatin, which can be obtained by condensing 1-thionaphthol with oxalyl chloride, is condensed with the 1 # 2-naphthlithioindoxyl.
The dye thus obtained is a dark red powder which dissolves in sulfuric acid with a blue color; he gives a yellow-brown vat with hydrosulphite and caustic soda, which is dyed from cotton in violet-brown tones, which turn into an exquisitely real red-brown when soapy.
Example: 214 parts of 1 # 2-thionaphthisatin and 200 parts of 1-2-naphththioindoxyl are suspended in 4000 parts of alcohol and heated to the boil after adding 5 parts of soda. After a short boil, the condensation has ended. The dyestuff deposited in very good yield is filtered, washed and dried.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH100705T | 1922-11-18 | ||
CH104929T | 1923-02-17 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH104929A true CH104929A (en) | 1924-05-16 |
Family
ID=25705826
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH104929D CH104929A (en) | 1922-11-18 | 1923-02-17 | Process for the production of a new indigoid dye. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH104929A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1062568B (en) * | 1958-07-18 | 1959-07-30 | Kugelfischer G Schaefer & Co | Grinding spindle bearing with at least one shoulder ball bearing |
-
1923
- 1923-02-17 CH CH104929D patent/CH104929A/en unknown
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1062568B (en) * | 1958-07-18 | 1959-07-30 | Kugelfischer G Schaefer & Co | Grinding spindle bearing with at least one shoulder ball bearing |
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