CH143399A - Process for the preparation of a vat dye. - Google Patents
Process for the preparation of a vat dye.Info
- Publication number
- CH143399A CH143399A CH143399DA CH143399A CH 143399 A CH143399 A CH 143399A CH 143399D A CH143399D A CH 143399DA CH 143399 A CH143399 A CH 143399A
- Authority
- CH
- Switzerland
- Prior art keywords
- red
- vat dye
- preparation
- wine
- 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
- C09B5/00—Dyes with an anthracene nucleus condensed with one or more heterocyclic rings with or without carbocyclic rings
- C09B5/24—Dyes with an anthracene nucleus condensed with one or more heterocyclic rings with or without carbocyclic rings the heterocyclic rings being only condensed with an anthraquinone nucleus in 1-2 or 2-3 position
- C09B5/34—Anthraquinone acridones or thioxanthrones
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Coloring (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
Verfahren zur Darstellung eines Küpenfarbstoffes. Es wurde gefunden, dass man einen violet ten Küpenfarbstoff erhält, wenn man den nach dem Verfahren des Schweiz. Patentes Nr. 56473 erhaltenen Küpenfarbstoff, der als Trichloranthrachinonakridon anzusprechen ist, mit p-Toluolsulfamid behandelt.
Der neue Farbstoff bildet nach dem Um kristallisieren aus Dichlorbenzol schöne kup- fcrglä.nzencle, violette Nadeln, die sich in kon zentrierter Schwefelsäure mit braunroter Farbe lösen, die nach kurzem Erwärmen in orangerot übergeht, und liefert mit allka- lischer Hyclrosulfitlösung eine weinrote Küpe, aus der Baumwolle in weinroten Tö nen gefärbt wird, die beim Verhängen und Waschen in violette Töne übergehen.
<I>Beispiel:</I> 4 Teile des nach dem Schweiz. Patent Nr. 56472 hergestellten Küpenfarbstoffes werden mit 1.,8 Teilen p-Toluolsulfamid, 0,6 Teilen wasserfreiem Natriumacetat, 0,05 Tei- len Kupferacetat und 20 Teilen Nitrobenzol unter Rührung zum Sieden erhitzt. Das Aus gangsmaterial geht in Lösung, die Reaktions masse färbt sich sehr rasch violett. Sobald die Intensität der Färbung nicht mehr zu nimmt, was nach ganz kurzem Erhitzen der Fall ist, lässt man die Masse erkalten, die zu einem Kristallbrei erstarrt.
Man verdünnt mit Alkohol, saugt ab, wäscht mit Alkohol nach, kocht den Rückstand mit Wasser und etwas verdünnter Salzsäure aus und trocknet. Der erhaltene Farbstoff lässt sich aus Di- chlorbenzol umkristallisieren.
Process for the preparation of a vat dye. It has been found that a violet vat dye is obtained if one uses the Swiss method. Patent No. 56473 obtained vat dye, which is to be addressed as trichloroanthraquinone acridone, treated with p-toluenesulfamide.
After recrystallizing from dichlorobenzene, the new dye forms beautiful, shiny, copper-colored, violet needles that dissolve in concentrated sulfuric acid with a brownish-red color, which changes to orange-red after brief heating, and, with an alkaline hydrousulphite solution, gives a wine-red vat, from which cotton is dyed in wine-red tones, which change into purple tones when hanging and washing.
<I> Example: </I> 4 parts of to Switzerland. Patent No. 56472 vat dye prepared with 1., 8 parts of p-toluenesulfamide, 0.6 parts of anhydrous sodium acetate, 0.05 parts of copper acetate and 20 parts of nitrobenzene are heated to boiling with stirring. The starting material goes into solution, the reaction mass turns purple very quickly. As soon as the intensity of the coloration no longer increases, which is the case after very brief heating, the mass is allowed to cool, which solidifies into a crystal paste.
It is diluted with alcohol, filtered off with suction, washed with alcohol, the residue is boiled with water and a little dilute hydrochloric acid and dried. The dye obtained can be recrystallized from dichlorobenzene.
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH143399T | 1929-05-21 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH143399A true CH143399A (en) | 1930-11-15 |
Family
ID=4399975
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH143399D CH143399A (en) | 1929-05-21 | 1929-05-21 | Process for the preparation of a vat dye. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH143399A (en) |
-
1929
- 1929-05-21 CH CH143399D patent/CH143399A/en unknown
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