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CH111566A - Process for the preparation of a brown leather dye. - Google Patents

Process for the preparation of a brown leather dye.

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Publication number
CH111566A
CH111566A CH111566DA CH111566A CH 111566 A CH111566 A CH 111566A CH 111566D A CH111566D A CH 111566DA CH 111566 A CH111566 A CH 111566A
Authority
CH
Switzerland
Prior art keywords
preparation
dye
brown leather
leather dye
brown
Prior art date
Application number
Other languages
German (de)
Inventor
Farbwerke Vorm Meiste Bruening
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
Publication of CH111566A publication Critical patent/CH111566A/en

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Description

  

  Verfahren zur     Darstellting    eines     brautten        Lederfarbstoffes.       Es wurde gefunden,     dass    ein wertvoller  brauner     Leilerfarbstoff    von sehr guten     Echt,-          heitseigeiisehaften    entsteht, wenn man Dini-         troaiiilido-amino-diphenylamin   <B>-</B> 2<B>-</B>     sulfosäure     auf     Chloranil    einwirken     lässt.    Der Verlauf  der Reaktion ist folgender:

    
EMI0001.0012     
    <I>Beispiel:</I>  Man verrührt<B>48,7</B> Teile     #dinitroa,nilido-          ti.iiiinodiphenylamin   <B>-</B> 2<B>-</B>     sulfosaures    Natrium       fflargtellbar    durch Kondensation von     Chlor-          flinitrobenzol    (1.2.4) mit 4,4'-diaminodi-         phenyla-min-2-sulf        asanrem    Natrium) in zirka  400 Teilen Wasser gelöst, mit 12 Teilen       Chloranil    und<B>5,3</B> Teilen Soda bei<B>90 ' C</B> drei  Stunden lang.

   Der abgeschiedene Farbstoff  bildet nach dem Trocknen ein schwarzes Pul-           ver,        das    sieh in konzentrierter Schwefelsäure  <B>mit</B>     grün-elber,    beim Erwärmen     blauggrün     Farbe löst.



  Process for the preparation of a brewed leather dye. It has been found that a valuable brown Leiler dye with very good fastness properties is created when dinitroaiilido-amino-diphenylamine is allowed to act on chloranil. [B> - </B> 2 <B> - </B> sulfonic acid. The course of the reaction is as follows:

    
EMI0001.0012
    <I> Example: </I> One stirs <B> 48.7 </B> parts of # dinitroa, nilido- ti.iiiinodiphenylamine <B> - </B> 2 <B> - </B> Sodium sulphate if available by condensation of chlorofinitrobenzene (1.2.4) with 4,4'-diaminodiphenyla-min-2-sulf asanrem sodium) dissolved in about 400 parts of water, with 12 parts of chloranil and <B> 5.3 </ B > Share soda at <B> 90'C </B> for three hours.

   After drying, the deposited dye forms a black powder which, in concentrated sulfuric acid <B> with </B> green-yellow, dissolves blue-green color when heated.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines braunen Lederfarbstoffes, dadurch gehennzeiehnet, <B>in</B> dass man Dinitroanilidoaminadiphenylamin-2- sulfosäure (darstellbar durch Kondensation von Clilorrlinitrobeii7ol <B>(1 .</B> 2<B>.</B> 4) mit 4,4'- diaminodiphen- yja m in-2) -sulfosaurem Na trium) PATENT CLAIM: A process for the preparation of a brown leather dye, which is shown <B> in </B> that dinitroanilidoamine adiphenylamine-2-sulfonic acid (can be prepared by condensation of clilorrlinitrobeii7ol <B> (1. </B> 2 <B>. B> 4) with 4,4'-diaminodiphen- yja m in-2) -sulfosaurem sodium) auf Chloranil einwirken lässt. Der Farbstoff bildet nach dem Trocknen (-in schwarzes Pulver, das, sich in ko#nzentrier- ter SehwefelAure mit grüngelber, beim Er- el wärmen blaulgrün werdender Farbe löst. allows chloranil to act. After drying, the dye forms (-in black powder, which dissolves in concentrated sulfuric acid with a greenish-yellow color that turns blue-green when warmed up.
CH111566D 1923-07-23 1924-07-08 Process for the preparation of a brown leather dye. CH111566A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE111566X 1923-07-23

Publications (1)

Publication Number Publication Date
CH111566A true CH111566A (en) 1925-09-01

Family

ID=5652579

Family Applications (1)

Application Number Title Priority Date Filing Date
CH111566D CH111566A (en) 1923-07-23 1924-07-08 Process for the preparation of a brown leather dye.

Country Status (1)

Country Link
CH (1) CH111566A (en)

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