CH300801A - Process for the production of a sulfur dye. - Google Patents
Process for the production of a sulfur dye.Info
- Publication number
- CH300801A CH300801A CH300801DA CH300801A CH 300801 A CH300801 A CH 300801A CH 300801D A CH300801D A CH 300801DA CH 300801 A CH300801 A CH 300801A
- Authority
- CH
- Switzerland
- Prior art keywords
- sulfur
- production
- sulfur dye
- act
- allowed
- 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. 29433.9. Verfahren zur Herstellung eines Schwefelfarbstoffes. Gegenstand vorliegenden Patentes ist ein Verfahren zur Herstelhmg eines Schwefelfarb stoffes. Das Verfahren ist dadurch gekenn zeichnet, dass man auf 4-(p-Oxy-phenylamino)- N-äthyl-diphenylamin Schwefel einführende Mittel einwirken lässt.
Als Schwefel einführende Mittel werden vorteilhaft Alkalipolysulfide verwendet, die man in Gegenwart eines Glykolmonoalkyl- äthers bei 100-125 einwirken lässt.
Der erhaltene neue Schwefelfarbstoff stellt ein dunkelblaues, rot bronzierendes Pulver dar, das vegetabilische Fasern aus schwefelnatrium- haltiger Flotte in reinen, grünstichig blauen Tönen färbt.
<I>Beispiel:</I> In eine Polysulfidschmelze,.bestehend aus 336 Teilen Schwefel, 273 Teilen Schwefel natrium (60o/oig) und 750 Teilen Äthylen- glykolmonoäthyläther, trägt man 250 Teile eines trockenen Leukoindophenols von folgen der Konstitution ein
EMI0001.0019
und heizt die Mischung auf Siedetemperatur.
Durch Zugabe von Wasser stellt man den Siedepunkt der Schmelze auf 115 ein und hält sie für 40 Stunden unter Rückfluss. Das Gemisch wird sodann wasserdampfdestil- liert und die schmutzig gelbgrüne Farbstoff lösung nach Zusatz von etwa 100 Teilen Schwefelnatrium 1001h, filtriert. Der Farb stoff kann auf übliche Weise durch Aus säuern oder durch Lüftung isoliert werden. Er stellt nach der Trocknung ein dunkelblaues, rot bronzierendes Pulver dar, welches vegeta bilische Fasern aus schwefelnatriumhaltiger Flotte in reinen, grünstichig blauen Tönen färbt.
Die Echtheitseigenschaften sind aus gezeichnet, wobei insbesondere die Chlorecht beit einen bisher bei blauen Schwefelfarb stoffen urerreicht guten Wert zeigt:
Additional patent to the main patent No. 29433.9. Process for the production of a sulfur dye. The subject of the present patent is a method for the production of a sulfur color. The process is characterized in that 4- (p-oxy-phenylamino) - N-ethyl-diphenylamine sulfur-introducing agents are allowed to act.
The sulfur-introducing agents are advantageously alkali polysulphides which are allowed to act in the presence of a glycol monoalkyl ether at 100-125.
The new sulfur dye obtained is a dark blue, red bronzing powder which dyes vegetable fibers from liquor containing sulfur sodium in pure, greenish blue tones.
<I> Example: </I> In a polysulfide melt consisting of 336 parts of sulfur, 273 parts of sodium sulfur (60%) and 750 parts of ethylene glycol monoethyl ether, 250 parts of a dry leucoindophenol of the following constitution are introduced
EMI0001.0019
and heats the mixture to boiling temperature.
The boiling point of the melt is adjusted to 115 by adding water and is kept under reflux for 40 hours. The mixture is then steam distilled and the dirty yellow-green dye solution, after adding about 100 parts of sodium sulphide 1001h, is filtered. The dye can be acidified in the usual way by acidifying or by ventilation. After drying, it is a dark blue, red bronzing powder, which dyes vegetal fibers from liquor containing sodium sulphide in pure, greenish blue tones.
The fastness properties are excellent, with the chlorine law in particular showing a value that has so far been achieved with blue sulfur dyes:
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH294339T | 1951-03-22 | ||
CH300801T | 1951-03-22 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH300801A true CH300801A (en) | 1954-08-15 |
Family
ID=25733466
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH300801D CH300801A (en) | 1951-03-22 | 1951-03-22 | Process for the production of a sulfur dye. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH300801A (en) |
-
1951
- 1951-03-22 CH CH300801D patent/CH300801A/en unknown
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