AT270838B - Process for the preparation of a new, water-insoluble monoazo dye - Google Patents

Process for the preparation of a new, water-insoluble monoazo dye

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Publication number
AT270838B
AT270838B AT908367A AT908367A AT270838B AT 270838 B AT270838 B AT 270838B AT 908367 A AT908367 A AT 908367A AT 908367 A AT908367 A AT 908367A AT 270838 B AT270838 B AT 270838B
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AT
Austria
Prior art keywords
water
new
preparation
monoazo dye
insoluble monoazo
Prior art date
Application number
AT908367A
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German (de)
Original Assignee
Siegle & Co Gmbh G
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.)
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Publication date
Application filed by Siegle & Co Gmbh G filed Critical Siegle & Co Gmbh G
Application granted granted Critical
Publication of AT270838B publication Critical patent/AT270838B/en

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Description

  

   <Desc/Clms Page number 1> 
 



  Verfahren zur Herstellung eines neuen, wasserunlöslichen Monoazofarbstoffes 
Die Erfindung betrifft ein Verfahren zur Herstellung eines neuen, wasserunlöslichen Monoazofarbstoffes unter Verwendung von   l-Amino-2-methoxybenzol-5-carbonsäurephenylamid   als Diazokomponente. Der neue Farbstoff entspricht der Formel : 
 EMI1.1 
 
Die Herstellung wasserunlöslicher Monoazofarbstoffe unter Verwendung der vorgenannten Diazokomponente hat beispielsweise bei Verwendung der Verbindung   1-   (2', 3' -Oxynaphthoylamino)-2, 5-dimethoxy-4-chlorbenzol als Kupplungskomponente zu brauchbaren Monoazofarbstoffen geführt.

   Es hat sich jedoch gezeigt, dass, wenn man gemäss der Erfindung dieselbe Diazoniumverbindung mit der Verbindung   1- (2', 3' -Oxynaphthoylamino) -2, 5-dimethoxybenzol kuppelt, Farbstoffe erhalten werden,   die nicht nur für die übliche Applikation in besonderem Masse geeignet sind, sondern auch speziell in Viskose-Kunstseide Farbtöne ergeben, die gegenüber dem Einsatz von gemäss dem vorgenannten Verfahren hergestellten Farbstoffen wesentlich farbstärker, reiner und blaustichiger sind. 



   Das erfindungsgemässe Verfahren wird an Hand des folgenden Beispiels erläutert :   Be i s p i e 1 : 24, 2 g 1-Amino-2-methoxybenzol-5-carbonsäurephenylamid   werden mit 2000 ml Wasser und 28, 6 ml Salzsäure,   zig   1/2 h gerührt und bei   OOC   mit 7, 0 g Natriumnitrit diazotiert. 



  Die entstandene Diazoniumsalzlösung wird anschliessend mit 0, 5 g Aktivkohle und   3, 0 g Cocosfett-   aminacetat versetzt, nach kurzer Zeit filtriert und darauf zu einer Lösung gegeben, die aus 36, 0 g 1-(2',3'-Oxynaphthoylamino)-2,5-dimethoxybenzol, 1,0 g eines Fettalkoholsulfonats,   10,   0 g Ätznatron und 1000 ml Wasser bereitet wurde. 



   Nach zirka 45 min wird der pH-Wert der Kupplungssuspension durch Zugabe von ungefähr 5, 0 ml   90% figer   Essigsäure auf 4 bis 5 gestellt, dann kurz aufgekocht, filtriert, gewaschen und getrocknet. Ausbeute 63, 5 g des Farbstoffes der Formel : 

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 EMI2.1 




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  Process for the preparation of a new, water-insoluble monoazo dye
The invention relates to a process for the preparation of a new, water-insoluble monoazo dye using 1-amino-2-methoxybenzene-5-carboxylic acid phenylamide as the diazo component. The new dye corresponds to the formula:
 EMI1.1
 
The preparation of water-insoluble monoazo dyes using the aforementioned diazo component has led to useful monoazo dyes, for example when using the compound 1- (2 ', 3' -oxynaphthoylamino) -2, 5-dimethoxy-4-chlorobenzene as coupling component.

   It has been shown, however, that if, according to the invention, the same diazonium compound is coupled with the compound 1- (2 ', 3' -oxynaphthoylamino) -2, 5-dimethoxybenzene, dyes are obtained which are not only useful for normal applications Compared to the use of dyes prepared in accordance with the aforementioned process, they are much stronger, purer and more bluish in color, especially in viscose rayon.



   The inventive method is illustrated using the following example: Be ispie 1: 24.2 g of 1-amino-2-methoxybenzene-5-carboxylic acid phenylamide are stirred with 2000 ml of water and 28.6 ml of hydrochloric acid for tens of 1/2 h and at OOC diazotized with 7.0 g of sodium nitrite.



  The resulting diazonium salt solution is then mixed with 0.5 g of activated charcoal and 3.0 g of coconut fatty amine acetate, filtered after a short time and then added to a solution consisting of 36.0 g of 1- (2 ', 3'-oxynaphthoylamino) - 2,5-dimethoxybenzene, 1.0 g of a fatty alcohol sulfonate, 10.0 g of caustic soda and 1000 ml of water was prepared.



   After about 45 minutes, the pH of the coupling suspension is adjusted to 4 to 5 by adding about 5.0 ml of 90% acetic acid, then briefly boiled, filtered, washed and dried. Yield 63.5 g of the dye of the formula:

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 EMI2.1


 

Claims (1)

PATENTANSPRUCH : Verfahren zur Herstellung eines neuen, wasserunlöslichen Monoazofarbstoffes der Formel : EMI2.2 EMI2.3 dass man die Diazoniumverbindung aus l-Amino-2-methoxybenzol-- 5 - carbonsäurephenylamid mit 1- (2', 3' -Oxynaphthoylamino)-2, 5-dimethoxybenzol direkt oder auf einem Substrat bzw. auf der Faser kuppelt. PATENT CLAIM: Process for the production of a new, water-insoluble monoazo dye of the formula: EMI2.2 EMI2.3 that the diazonium compound from l-amino-2-methoxybenzene-- 5-carboxylic acid phenylamide is coupled with 1- (2 ', 3' -oxynaphthoylamino) -2, 5-dimethoxybenzene directly or on a substrate or on the fiber.
AT908367A 1966-10-07 1967-10-06 Process for the preparation of a new, water-insoluble monoazo dye AT270838B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE270838X 1966-10-07

Publications (1)

Publication Number Publication Date
AT270838B true AT270838B (en) 1969-05-12

Family

ID=6002222

Family Applications (1)

Application Number Title Priority Date Filing Date
AT908367A AT270838B (en) 1966-10-07 1967-10-06 Process for the preparation of a new, water-insoluble monoazo dye

Country Status (1)

Country Link
AT (1) AT270838B (en)

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