CH210741A - Process for the production of a sulfur dye. - Google Patents
Process for the production of a sulfur dye.Info
- Publication number
- CH210741A CH210741A CH210741DA CH210741A CH 210741 A CH210741 A CH 210741A CH 210741D A CH210741D A CH 210741DA CH 210741 A CH210741 A CH 210741A
- Authority
- CH
- Switzerland
- Prior art keywords
- sulfur
- production
- sulfur dye
- greenish
- dye
- 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
Zusatzpatent zum Hauptpatent Nr. 207345. Verfahren zur Herstellung eines Schwefelfarbstoffes. Vorliegendes Patent bezieht sich auf ein Verfahren zur Herstellung eines Schwefelfarb stoffes, dadurch gekennzeichnet, dass man das Leukoindopheriol, wie es durch Umsetzung von 4'-Acetylamiriodiphenyl-l-naphthylamin- 8-sulfonsäure mit p-Amirioplienol und nach folgende Reduktion erhältlich ist, in Gegen wart einer Kupferverbindung mit einem Alkalipolysulfid behandelt.
Der so erhaltene Schwefelfarbstoff ist ein grünlich-schwarzes Pulver, das sich in kon zentrierter Schwefelsäure mit grünstichig- blauer Farbe löst. Auf der pflanzlichen Faser erhält man aus dem Schwefelnatriumbade lebhafte, sehr gelbstichig grüne Färbungen mit guten Echtheitseigenschaften.
<I>Beispiel:</I> 30Teile des durchUmsetzungvon 4'-Acetyl- aminodiphenyl-1-naphtylamin-8-sulfonsäure mit p-Aminophenol und nachfolgende Reduk- tion erhältlichen Leukoindophenols von der Formel
EMI0001.0019
werden mit einer wässrigen Polysulfidlösung aus 140 Teilen kristallisiertem Schwefel natrium und 71 Teilen Schwefel unter Zu satz von 9 Teilen Kupfersulfat einige Zeit unter Rückflusskühlung gekocht.
Die fertige Schmelze wird dann mit etwa 1200 Teilen Wasser verdünnt, der gebildete Farbstoff nach Zusatz von 30 Teilen kristallisiertem Schwe- felnatrium mit Luft ausgeblasen und wie üblich abgeschieden.
Additional patent to main patent no. 207345. Process for the production of a sulfur dye. The present patent relates to a process for the production of a sulfur dye, characterized in that the leucoindopheriol, as is obtainable by reacting 4'-acetylamiriodiphenyl-1-naphthylamine-8-sulfonic acid with p-amirioplienol and following reduction, is in Treated against a copper compound with an alkali polysulphide.
The sulfur dye obtained in this way is a greenish-black powder which dissolves in concentrated sulfuric acid with a greenish-blue color. On the vegetable fiber, vivid, very yellowish green dyeings with good fastness properties are obtained from the sulfur-sodium bath.
<I> Example: </I> 30 parts of the leucoindophenol of the formula obtainable by reacting 4'-acetylaminodiphenyl-1-naphthylamine-8-sulfonic acid with p-aminophenol and subsequent reduction
EMI0001.0019
are boiled under reflux for some time with an aqueous polysulphide solution of 140 parts of crystallized sodium sulfur and 71 parts of sulfur with the addition of 9 parts of copper sulphate.
The finished melt is then diluted with about 1200 parts of water, and after adding 30 parts of crystallized sodium sulphide, the dye formed is blown out with air and deposited as usual.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH207345T | 1938-08-19 | ||
DE210741X | 1941-07-21 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH210741A true CH210741A (en) | 1940-07-31 |
Family
ID=25724386
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH210741D CH210741A (en) | 1938-08-19 | 1938-08-19 | Process for the production of a sulfur dye. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH210741A (en) |
-
1938
- 1938-08-19 CH CH210741D patent/CH210741A/en unknown
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