AT51981B - Process for the preparation of an oxidation product of β-aminoanthraquinone. - Google Patents

Process for the preparation of an oxidation product of β-aminoanthraquinone.

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Publication number
AT51981B
AT51981B AT51981DA AT51981B AT 51981 B AT51981 B AT 51981B AT 51981D A AT51981D A AT 51981DA AT 51981 B AT51981 B AT 51981B
Authority
AT
Austria
Prior art keywords
aminoanthraquinone
preparation
oxidation product
product
indanthrene
Prior art date
Application number
Other languages
German (de)
Original Assignee
Hoechst Ag
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hoechst Ag filed Critical Hoechst Ag
Application granted granted Critical
Publication of AT51981B publication Critical patent/AT51981B/en

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  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Description

  

   <Desc/Clms Page number 1> 
 



  Verfahren zur Darstellung eines Oxydationsproduktes des ss-Aminoanthrachinons. 



   Behandelt man ss-Aminoanthrachinon in feiner, wässeriger Verteilung mit Chlorkalk in der Wärme, so erhält man ein neues Produkt, welches ein Gemenge von-Amino- anthrachinon 
 EMI1.1 
 
 EMI1.2 
 
 EMI1.3 
 Wahl der Arbeitsbedingungen. 



   Beispiel. 



   10 kg ss-Aminoanthrachinon in Form einer etwa   t Obigen   Paste werden mit einer filtrierten Lösung von 60   kg Chlorkalk   in etwa 300   l   Wasser unter Umrühren auf ungefähr 70 bis 900 erhitzt, wobei stürmische Reaktion unter Aufschäumen eintritt. 



  Sobald das Schäumen aufhört und die orangegelbe Farbe des 3-Aminoanthrachinons in ein helles Strohgelb übergegangen ist, verdünnt man mit etwa 300   1   Wasser, sammelt das Reaktionsprodukt in einer Filterpresse und wäscht hier reichlich mit heissem Wasser. 



   So gewonnen, stellt das Reaktionsprodukt ein blassgelbes Pulver dar, nicht ohne Zersetzung schmelzbar und unlöslich oder nahezu unlöslich in den gebräuchlichen organischen Lösungsmitteln. Es löst sich dagegen in hochsiedenden organischen Lösungsmitteln, z. B. in siedendem Anilin, Chinolin usw., wobei rasch Blaufärbung der Lösung eintritt. Konzentrierte Schwefelsäure löst das Produkt mit orangegelber Farbe. 



   Behandelt man das Reaktionsprodukt mit alkalischen Reduktionsmitteln, z. B. mit alkalischen   Lösungen   von Hydrosulfit, Traubenzucker, Zinnoxydul usw., so wird   das ss-Azo-   anthrachinon in   -Aminoanthrachinon zuruckverwandelt,   während das Anthrachinonazhydrin Indanthren bzw. dessen Leukokörper liefert. Diese Umwandlung kann auch auf der Textilfaser vorgenommen werden. 



   Erwärmt man das Reaktionsprodukt mit Salzsäure oder mit Bromwasserstoffsäure, so bleibt das Azoanthrachinon unverändert, während das Anthrachinonazhydrin in ein Gemenge von Indanthren und   Chlorindanthren   bzw. Bromindanthren verwandelt wird. 

**WARNUNG** Ende DESC Feld kannt Anfang CLMS uberlappen**.



   <Desc / Clms Page number 1>
 



  Process for the preparation of an oxidation product of β-aminoanthraquinone.



   If β-aminoanthraquinone is treated in fine, aqueous distribution with chlorinated lime in the warmth, a new product is obtained, which is a mixture of aminoanthraquinone
 EMI1.1
 
 EMI1.2
 
 EMI1.3
 Choice of working conditions.



   Example.



   10 kg of β-aminoanthraquinone in the form of a paste about the above are heated to about 70 to 900 with a filtered solution of 60 kg of chlorinated lime in about 300 l of water with stirring, a stormy reaction occurring with foaming.



  As soon as the foaming stops and the orange-yellow color of the 3-aminoanthraquinone has turned into a light straw yellow, it is diluted with about 300 liters of water, the reaction product is collected in a filter press and washed here with plenty of hot water.



   Obtained in this way, the reaction product is a pale yellow powder, cannot be melted without decomposition and is insoluble or almost insoluble in common organic solvents. In contrast, it dissolves in high-boiling organic solvents, e.g. B. in boiling aniline, quinoline, etc., the solution quickly turning blue. Concentrated sulfuric acid dissolves the product with an orange-yellow color.



   If the reaction product is treated with alkaline reducing agents, e.g. B. with alkaline solutions of hydrosulfite, dextrose, tin oxide, etc., the ss-azo-anthraquinone is converted back into -aminoanthraquinone, while the anthraquinone azhydrin supplies indanthrene or its leuco body. This conversion can also be carried out on the textile fiber.



   If the reaction product is heated with hydrochloric acid or with hydrobromic acid, the azoanthraquinone remains unchanged, while the anthraquinone azhydrin is converted into a mixture of indanthrene and chlorine indanthrene or bromine indanthrene.

** WARNING ** End of DESC field may overlap beginning of CLMS **.

 

Claims (1)

PATENT-ANSPRUCH : Verfahren zur Darstellung eines Oxydationsproduktes des ss-Aminoanthrachinons, dadurch gekennzeichnet, dass man ss-Aminoanthrachinon mit Cblorkalktösung in der Wärme behandelt. **WARNUNG** Ende CLMS Feld Kannt Anfang DESC uberlappen**. PATENT CLAIM: Process for the preparation of an oxidation product of β-aminoanthraquinone, characterized in that β-aminoanthraquinone is treated with calcium carbonate solution in the heat. ** WARNING ** End of CLMS field may overlap beginning of DESC **.
AT51981D 1910-08-25 1910-08-25 Process for the preparation of an oxidation product of β-aminoanthraquinone. AT51981B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT51981T 1910-08-25

Publications (1)

Publication Number Publication Date
AT51981B true AT51981B (en) 1912-02-10

Family

ID=3573057

Family Applications (1)

Application Number Title Priority Date Filing Date
AT51981D AT51981B (en) 1910-08-25 1910-08-25 Process for the preparation of an oxidation product of β-aminoanthraquinone.

Country Status (1)

Country Link
AT (1) AT51981B (en)

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