CH119388A - Process for the production of a sulfur dye. - Google Patents
Process for the production of a sulfur dye.Info
- Publication number
- CH119388A CH119388A CH119388DA CH119388A CH 119388 A CH119388 A CH 119388A CH 119388D A CH119388D A CH 119388DA CH 119388 A CH119388 A CH 119388A
- Authority
- CH
- Switzerland
- Prior art keywords
- production
- sulfur
- new dye
- sulfur dye
- indophenol
- 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
- C09B49/00—Sulfur dyes
- C09B49/10—Sulfur dyes from diphenylamines, indamines, or indophenols, e.g. p-aminophenols or leucoindophenols
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Coloring (AREA)
Description
Verfahren zur Herstellung eines Seliwefelfarbstoffes. Es wurde gefunden, dass man einen neuen Farbstoff erhält, wenn man die Leukover- bindung des Indophenols aus Karbazol und Nitrosophenol in Gegenwart von o-Toluidin und gegebenenfalls eines Substrates, wie Kochsalz oder Natriumsulfat, mit Schwefel bei höherer Temperatur behandelt.
Der neue Farbstoff bildet ein dunkelblaues Pulver, gibt mit 1Tydrosulfit und Natronlauge eine hellgelbe Küpe, aus welcher Baumwolle in wasch-, licht- und chlorechten, rotstichig blauen Tönen gefärbt wird.
Beispiel: \37,2 'feile des Indophenols, erhalten durch Kondensation von Nitrosophenol und Kar- bazol, werden in eine konzentrierte Lösung von 29 Teilen kristallisiertem Natriumsulfit eingetragen und gerührt, bis das Indophenol vollständig reduziert ist. Hierauf trocknet man die ganze Masse und mischt sie sorg fältig mit 19 Teilen o-Toluidin, 24 Teilen Schwefel und 10 Teilen Kochsalz. Die so er haltene Mischung wird nun bei zirka 180 gebacken, bis die Entwicklung von Schwefel wasserstoff aufgehört hat.
Das erhaltene Produkt wird nach dein Erkalten fein ge mahlen, mit verdünntem Schwefelnatrium, hierauf mit Wasser und endlich, zwecks Ent fernung von geringen Mengen noch vorhan dener organischer Basen, mit verdünnter Salzsäure gewaschen.
Process for the production of a seliulfur dye. It has been found that a new dye is obtained if the leuco compound of indophenol from carbazole and nitrosophenol is treated with sulfur at a higher temperature in the presence of o-toluidine and, if appropriate, a substrate such as sodium chloride or sodium sulfate.
The new dye forms a dark blue powder, gives a light yellow vat with 1Tydrosulfite and sodium hydroxide solution, from which cotton is dyed in wash, light and chlorine-fast, reddish blue tones.
Example: 37.2 'files of indophenol, obtained by condensation of nitrosophenol and carbazole, are introduced into a concentrated solution of 29 parts of crystallized sodium sulfite and stirred until the indophenol is completely reduced. The whole mass is then dried and carefully mixed with 19 parts of o-toluidine, 24 parts of sulfur and 10 parts of table salt. The mixture obtained in this way is now baked at around 180 ° until the development of hydrogen sulfide has stopped.
After cooling, the product obtained is finely ground, washed with dilute sodium sulphide, then with water and finally, for the purpose of removing small amounts of organic bases still present, with dilute hydrochloric acid.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH119388T | 1926-02-08 | ||
CH105237T | 1926-11-13 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH119388A true CH119388A (en) | 1927-03-16 |
Family
ID=25706839
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH119388D CH119388A (en) | 1926-02-08 | 1926-02-08 | Process for the production of a sulfur dye. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH119388A (en) |
-
1926
- 1926-02-08 CH CH119388D patent/CH119388A/en unknown
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CH119388A (en) | Process for the production of a sulfur dye. | |
CH119384A (en) | Process for the production of a sulfur dye. | |
CH119390A (en) | Process for the production of a sulfur dye. | |
CH119389A (en) | Process for the production of a sulfur dye. | |
CH119385A (en) | Process for the production of a sulfur dye. | |
CH119387A (en) | Process for the production of a sulfur dye. | |
CH119383A (en) | Process for the production of a sulfur dye. | |
CH114424A (en) | Process for the production of a sulfur dye. | |
CH119386A (en) | Process for the production of a sulfur dye. | |
DE241910C (en) | ||
DE488816C (en) | Process for the production of sulfur dyes | |
CH133103A (en) | Process for the production of a new chromium-containing azo dye. | |
CH125367A (en) | Process for the production of a sulfur dye. | |
CH125365A (en) | Process for the production of a sulfur dye. | |
CH125366A (en) | Process for the production of a sulfur dye. | |
CH122272A (en) | Process for the production of a sulfur dye. | |
DE588525C (en) | Process for the production of sulfur-containing dyes | |
DE866075C (en) | Process for the preparation of dyes of the phthalocyanine series | |
CH125368A (en) | Process for the production of a sulfur dye. | |
CH125630A (en) | Process for the production of a new sulfur dye. | |
CH125631A (en) | Process for the production of a new sulfur dye. | |
CH125123A (en) | Process for the production of a new sulfur dye. | |
CH221188A (en) | Process for the preparation of a stilbene dye. | |
CH131260A (en) | Process for the production of a new dye. | |
CH178434A (en) | Process for the production of a new sulfur dye. |