CH274438A - Process for the production of a vat dye. - Google Patents
Process for the production of a vat dye.Info
- Publication number
- CH274438A CH274438A CH274438DA CH274438A CH 274438 A CH274438 A CH 274438A CH 274438D A CH274438D A CH 274438DA CH 274438 A CH274438 A CH 274438A
- Authority
- CH
- Switzerland
- Prior art keywords
- acid
- production
- vat dye
- dye
- amino
- 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
- C09B1/00—Dyes with anthracene nucleus not condensed with any other ring
- C09B1/16—Amino-anthraquinones
- C09B1/20—Preparation from starting materials already containing the anthracene nucleus
- C09B1/36—Dyes with acylated amino groups
- C09B1/42—Dyes with acylated amino groups the acyl groups being residues of an aromatic carboxylic acid
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
Verfahren zur Herstellung eines Küpenfarbstoffes. Es wurde gefunden, dass ein wertvoller 1Cüpenfarbstoff hergestellt werden kann, wenn man 1-Benzoylamino-4-amino-6-chlor- antlirachinon mit einem reaktionsfähigen funktionellen Derivat der 4-Isopropy lsulfon- beiizol-l-carbonsäure acyliert.
Der neue Farbstoff bildet rote Kristalle, die sich in konz. Schwefelsäure mit roter Farbe lösen, und färbt Baumwolle aus olive- farbener Küpe in sehr echten und reinen Rosatönen.
Das als Ausgangsstoff für das vorliegende Verfahren verwendete 1- Benzoylamino - 4 - amino-6-chlor-anthrachinon kann beispiels weise durch Benzoylierung von 1-Amino-4-ni- t i#o-6-ehlor-anthraehinon und nachträgliche Reduktion der Nitrogruppe nach den übliehen Methoden hergestellt werden.
Als reaktionsfähige funktionelle Derivate der 4 - Isopropylsulfonbenzol -1- earbonsäure können für das vorliegende Verfahren zweck mässig die Säurehalogenide, insbesondere das Säurechlorid, verwendet werden. Die Um setzung der Aminoanthrachinonkomponente mit der Säurekomponente kann in an sich be kannter Weise, zweckmässig in hochsiedenden Lösungsmitteln wie Chlorbenzol, Dichlor- benzol, Nitrobenzol oder Naphthalin, bei er- liöltten Temperaturen durchgeführt werden.
<I>Beispiel:</I> 23 Teile 4-Isopropylsulfonbenzol-l-carbon- säure werden in 350 Teilen trockenem Nitro- benzol verteilt und nach Zufügen von 15 Teilen Thionylchlorid und 0,5 Teilen Pyridin anderthalb Stunden bei 70 bis 80 verrührt. Hierauf werden 37 Teile 1-Benzoylamino-4- amino-6-chloranthrachinon zugefügt.
Nach dem noch zwei Stunden bei 120 bis 130 weitergerührt wurde, wird erkalten gelassen und der in roten Kriställchen ausfallende Farbstoff abgesaugt, gut mit kochendem Al kohol gewaschen und getrocknet.
Process for the production of a vat dye. It has been found that a valuable 1-vat dye can be produced if 1-benzoylamino-4-amino-6-chloroantlirachinone is acylated with a reactive functional derivative of 4-isopropyl sulfonate-1-carboxylic acid.
The new dye forms red crystals, which are in conc. Dissolve sulfuric acid with red dye and dyes cotton from an olive-colored vat in very real and pure pink tones.
The 1-benzoylamino-4-amino-6-chloro-anthraquinone used as starting material for the present process can, for example, by benzoylation of 1-amino-4-niti # o-6-ehlor-anthraehinone and subsequent reduction of the nitro group the usual methods.
The acid halides, in particular the acid chloride, can advantageously be used as reactive functional derivatives of 4-isopropylsulfonbenzene-1-carboxylic acid for the present process. The reaction of the aminoanthraquinone component with the acid component can be carried out in a manner known per se, expediently in high-boiling solvents such as chlorobenzene, dichlorobenzene, nitrobenzene or naphthalene, at the temperatures achieved.
<I> Example: </I> 23 parts of 4-isopropylsulfonbenzene-1-carboxylic acid are distributed in 350 parts of dry nitrobenzene and, after 15 parts of thionyl chloride and 0.5 part of pyridine have been added, the mixture is stirred at 70 to 80 for one and a half hours. 37 parts of 1-benzoylamino-4-amino-6-chloroanthraquinone are then added.
After stirring for a further two hours at 120 to 130, the mixture is allowed to cool and the dye which precipitates in red crystals is filtered off with suction, washed thoroughly with boiling alcohol and dried.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH272571T | 1947-07-17 | ||
CH274438T | 1948-05-13 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH274438A true CH274438A (en) | 1951-03-31 |
Family
ID=25731377
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH274438D CH274438A (en) | 1947-07-17 | 1948-05-13 | Process for the production of a vat dye. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH274438A (en) |
-
1948
- 1948-05-13 CH CH274438D patent/CH274438A/en unknown
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