CH175033A - Process for the preparation of a dye of the anthraquinone series. - Google Patents
Process for the preparation of a dye of the anthraquinone series.Info
- Publication number
- CH175033A CH175033A CH175033DA CH175033A CH 175033 A CH175033 A CH 175033A CH 175033D A CH175033D A CH 175033DA CH 175033 A CH175033 A CH 175033A
- Authority
- CH
- Switzerland
- Prior art keywords
- dye
- anthraquinone series
- preparation
- acetyl
- 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
- C09B1/26—Dyes with amino groups substituted by hydrocarbon radicals
- C09B1/32—Dyes with amino groups substituted by hydrocarbon radicals substituted by aryl groups
- C09B1/34—Dyes with amino groups substituted by hydrocarbon radicals substituted by aryl groups sulfonated
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Coloring (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
Verfahren zur Herstellung eines Farbstoffes der Anthrachinonreihe. Es wurde gefunden, dass man einen wert vollen Farbstoff der Anthrachinonreihe er hält, wenn man 1-Amino-2-acetyl-4-p-toluido- anthrachinon so lange mit einem sulfonierend #virkenden Mittel behandelt, bis eine ent nommene Probe eben wasserlöslieh gewor den ist.
Der erhaltene neue Farbstoff färbt die tierische Faser aus saurem Bade in blau- ,-rünen Tönen von guten Echtheitseigen schaften.
<I>Beispiel:</I> Man löst 7,4 Teile 1-Amino-2-acetyl-4-p- toluidoanthrachinon (erhältlich zum Beispiel aus 1-Amino-2-acetyl-4-eliloranthrachinon und p-Tolui-din und Spaltung des zunächst entstandenen Anils mit Schwefelsäure bei Zimmertemperatur) bei<B>0'</B> in 140 Teilen Schwefelsäuremonohydrat und gibt<B>65</B> Ge wichtsteile rauchende Schwefelsäure, enthal tend 23<B>% SO"</B> zu. Man rührt so lange bei <B>0</B> ', bis eine entnommene und aufgearbeitete Probe erkennen lässt, dass das Reaktions produkt eben völlig wasserlöslich geworden ist.
Die entstandene Verbindung wird sodann durch vorsichtige Zugabe von Wasser ab geschieden. Man filtriert, wäscht den Rück stand mit verdünnter Schwefelsäure und löst ihn in heissem Wasser. Man filtriert darauf und versetzt das Filtrat so lange mit Koch salz, bis eine Vermehrung der dabei ein tretenden Abselieidung nicht mehr zu be- obaeliten ist. Der erhaltene Niederschlag, wird sodann in der üblichen Weise auf gearbeitet.
Process for the preparation of a dye of the anthraquinone series. It was found that a valuable dye of the anthraquinone series is obtained if 1-amino-2-acetyl-4-p-toluido-anthraquinone is treated with a sulfonating agent until a sample taken is just water-soluble that is.
The new dye obtained dyes the animal fiber from acid bath in blue, green shades of good fastness properties.
<I> Example: </I> 7.4 parts of 1-amino-2-acetyl-4-p-toluidoanthraquinone (obtainable, for example, from 1-amino-2-acetyl-4-eliloranthraquinone and p-toluidin) are dissolved and cleavage of the anile initially formed with sulfuric acid at room temperature) at <B> 0 '</B> in 140 parts of sulfuric acid monohydrate and gives <B> 65 </B> parts by weight of fuming sulfuric acid, containing 23 <B>% SO "< / B>. The mixture is stirred at <B> 0 </B> 'until a sample taken and processed shows that the reaction product has just become completely water-soluble.
The resulting compound is then separated off by carefully adding water. It is filtered, the residue is washed with dilute sulfuric acid and dissolved in hot water. It is then filtered, and sodium chloride is added to the filtrate until an increase in the precipitation that occurs is no longer to be observed. The precipitate obtained is then worked up in the usual way.
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH175033T | 1934-03-28 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH175033A true CH175033A (en) | 1935-02-15 |
Family
ID=4425922
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH175033D CH175033A (en) | 1934-03-28 | 1934-03-28 | Process for the preparation of a dye of the anthraquinone series. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH175033A (en) |
-
1934
- 1934-03-28 CH CH175033D patent/CH175033A/en unknown
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