AT46470B - Process for the preparation of trisazo dyes. - Google Patents

Process for the preparation of trisazo dyes.

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Publication number
AT46470B
AT46470B AT46470DA AT46470B AT 46470 B AT46470 B AT 46470B AT 46470D A AT46470D A AT 46470DA AT 46470 B AT46470 B AT 46470B
Authority
AT
Austria
Prior art keywords
preparation
trisazo dyes
diamines
dyes
derivatives
Prior art date
Application number
Other languages
German (de)
Original Assignee
Farbenfabriken Vorm Fried Baye
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 Farbenfabriken Vorm Fried Baye filed Critical Farbenfabriken Vorm Fried Baye
Application granted granted Critical
Publication of AT46470B publication Critical patent/AT46470B/en

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Description

  

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  Verfahren zur Darstellung von Trisazofarbstoffen. 



   Es wurde gefunden, dass durch Einschiebung eines Moleküls einer Aminonaphtol-   sulfonsäure   in das Molekül des Bismarckbrauns wertvolle braune Trisazofarbstoffe entstehen, die auf Baumwolle direkt ohne Beizen ziehen, trotzdem sie sich nicht von einem   Tetrazopara-sondern   von einem Teftrazometa-phenylendiamin ableiten. Die neuen Produkte zeichnen sich durch grosse   Ergiebigkeit   und durch gute Echtheit gegen Säuren und Alkalien aus. Sie haben die wertvolle Eigenschaft auf der Faser oder in Substanz sich noch mit Diazoverbindungen vereinigen zu können, wodurch eine weitere Vertiefung der 
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   Auch gemischte Farbstoffe lassen sich herstellen, z. B. lässt sich an die oben erwähnte Tetrazoverbindung erst 1 Molekül   m-Phenylendiaminsulfosäure   oder Carbonsäure und dann erst 1 Molekül m-Phenylendiamin kuppeln.



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  Process for the preparation of trisazo dyes.



   It has been found that by inserting a molecule of an aminonaphthol sulfonic acid into the molecule of Bismarck brown, valuable brown trisazo dyes are formed which apply directly to cotton without pickling, although they are not derived from a tetrazopara but from a teftrazometa phenylenediamine. The new products are characterized by their high productivity and good fastness to acids and alkalis. They have the valuable property of being able to combine with diazo compounds on the fiber or in substance, which further deepens the
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   Mixed dyes can also be made, e.g. B. first 1 molecule of m-phenylenediamine sulfonic acid or carboxylic acid and only then 1 molecule of m-phenylenediamine can be coupled to the tetrazo compound mentioned above.

Claims (1)

PATENT-ANSPRUCH : Verfahren zur Darstellung von Trisazofarbstoffen, dadurch gekennzeichnet, dass man die durch Kuppelung von Monoacidyl-m-diaminen mit Aminonaphtolsulfosäuren erhältlichen Monoazoderivate nach Abspaltung der Acidylgruppe und Überführung in die Tetrazoverbindungen mit 2 Molekülen desselben oder verschiedener m-Diamine oder ihrer Derivate vereinigt. PATENT CLAIM: Process for the preparation of trisazo dyes, characterized in that the monoazo derivatives obtainable by coupling monoacidyl-m-diamines with aminonaphthol sulfonic acids are combined with 2 molecules of the same or different m-diamines or their derivatives after splitting off the acidyl group and converting them into the tetrazo compounds.
AT46470D 1909-03-22 1910-03-14 Process for the preparation of trisazo dyes. AT46470B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE46470X 1909-03-22

Publications (1)

Publication Number Publication Date
AT46470B true AT46470B (en) 1911-02-10

Family

ID=5625316

Family Applications (1)

Application Number Title Priority Date Filing Date
AT46470D AT46470B (en) 1909-03-22 1910-03-14 Process for the preparation of trisazo dyes.

Country Status (1)

Country Link
AT (1) AT46470B (en)

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