CH290509A - Process for the production of a vat dye. - Google Patents
Process for the production of a vat dye.Info
- Publication number
- CH290509A CH290509A CH290509DA CH290509A CH 290509 A CH290509 A CH 290509A CH 290509D A CH290509D A CH 290509DA CH 290509 A CH290509 A CH 290509A
- Authority
- CH
- Switzerland
- Prior art keywords
- isophthalic acid
- production
- agent releasing
- dichloroanthraquinone
- mol
- 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
- C09B1/43—Dicarboxylic acids
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Coloring (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
<B>Zusatzpatent</B> zum Hauptpatent Nr. 286501. Verfahren zur Herstellung eines Küpenfarbstoffes. Es, wurde gefunden, dass man zu einem wertvollen güpenfarbstoff gelangt, wenn man 2 Mol 1-Amino-6,7-dichloranthrachinon mit 1 1VIol eines den Isophthaloylrest abgebenden Mittels behandelt.
Der neue Farbstoff löst sich in konzen trierter Schwefelsäure mit gelbroter Farbe und färbt Baumwolle aus brauner Küpe in echten gelben Tönen.
Das beim vorliegenden Verfahren als Aus gangsstoff dienende 1-Amino-6,7-dichlor- anthrachinon kann durch Mononitrierung von 2,3-Dichloranthrachinon und nachfolgende Reduktion des erhaltenen 1-Nitro-6,7-dichlor- anthrachinons hergestellt werden.
Als den Isophthalsäurerest abgebendes Mit tel kann zweckmässig ein reaktionsfähiges, funktionelles Derivat der Isophthalsäure, bei spielsweise ein Säurehalogenid und insbeson dere das Säuredichlorid, verwendet werden.
Die Umsetzung kann mit Vorteil in indiffe renten, hochsiedenden Lösungsmitteln, wie Mono-, Di- oder Trichlorbenzol, Nitrobenzol oder Naphthalin, gewünschtenfalls in An wesenheit säurebindender und/oder kataly tisch wirksamer Mittel, wie tertiärer Basen (Pyridin oder Dimethylanilin), bei erhöhter Temperatur, beispielsweise zwischen 100 und dem Siedepunkt des verwendeten Lösungsmit tels, durchgeführt werden.
<I>Beispiel:</I> 29 Teile 1-Amino-6,7-dichloranthrachinon und 10 Teile Isophthalsäuredichlorid werden in. 480 Teilen trockenem Nitrobenzol suspen diert. Diese Mischung wird unter gutem Rüh ren in einer Stunde auf 130 erhitzt und dann noch zwei Stunden bei 130 bis 135 weiter gerührt. Der beim Erkalten in gelben Nädel- chen ausfallende Farbstoff wird abgesaugt, mit Nitrobenzol, heissem Chlorbenzol und Al kohol gut gewaschen und getrocknet.
<B> Additional patent </B> to main patent no. 286501. Process for the production of a vat dye. It has been found that a valuable high-quality dye is obtained if 2 mol of 1-amino-6,7-dichloroanthraquinone are treated with 1 1VIol of an agent which releases the isophthaloyl radical.
The new dye dissolves in concentrated sulfuric acid with a yellow-red color and dyes cotton from a brown vat in real yellow tones.
The 1-amino-6,7-dichloroanthraquinone used as the starting material in the present process can be prepared by mononitration of 2,3-dichloroanthraquinone and subsequent reduction of the 1-nitro-6,7-dichloroanthraquinone obtained.
A reactive, functional derivative of isophthalic acid, for example an acid halide and in particular the acid dichloride, can expediently be used as the isophthalic acid residue-releasing tel.
The reaction can be carried out with advantage in indifferent, high-boiling solvents such as mono-, di- or trichlorobenzene, nitrobenzene or naphthalene, if desired in the presence of acid-binding and / or catalytically active agents, such as tertiary bases (pyridine or dimethylaniline), at elevated temperature , for example between 100 and the boiling point of the solvent used, are carried out.
<I> Example: </I> 29 parts of 1-amino-6,7-dichloroanthraquinone and 10 parts of isophthalic acid dichloride are suspended in 480 parts of dry nitrobenzene. This mixture is heated to 130 in one hour with thorough stirring and then stirred for a further two hours at 130 to 135. The dye, which precipitates out in yellow needles on cooling, is filtered off with suction, washed thoroughly with nitrobenzene, hot chlorobenzene and alcohol and dried.
Claims (1)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH286501T | 1949-07-22 | ||
| CH290509T | 1949-07-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH290509A true CH290509A (en) | 1953-04-30 |
Family
ID=25732610
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH290509D CH290509A (en) | 1949-07-22 | 1949-07-22 | Process for the production of a vat dye. |
Country Status (1)
| Country | Link |
|---|---|
| CH (1) | CH290509A (en) |
-
1949
- 1949-07-22 CH CH290509D patent/CH290509A/en unknown
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