AT47155B - Process for the preparation of disazo dyes for wool. - Google Patents

Process for the preparation of disazo dyes for wool.

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Publication number
AT47155B
AT47155B AT47155DA AT47155B AT 47155 B AT47155 B AT 47155B AT 47155D A AT47155D A AT 47155DA AT 47155 B AT47155 B AT 47155B
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AT
Austria
Prior art keywords
wool
preparation
disazo dyes
dyes
yellow
Prior art date
Application number
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German (de)
Original Assignee
Griesheim Elektron Chem Fab
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 Griesheim Elektron Chem Fab filed Critical Griesheim Elektron Chem Fab
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Publication of AT47155B publication Critical patent/AT47155B/en

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Description

  

   <Desc/Clms Page number 1> 
 



  Verfahren zur Darstellung von   Disazofarbstoffen   für Wolle. 



   In der Stammpatentschrift Nr. 46876 sind Disazofarbstoffe beschrieben, welche durch Kombination der   Tetrazo\'orbindl1ng   des m-Tolidins der Konstitution 
 EMI1.1 
 
 EMI1.2 
 anfärben und auch ohne   Nachbehandlung   mit   Chromsalzen   gegen weisse Wolle und Baum-   wolle walkecht sind.   



   Es wurde nun gefunden, dass man in diesen Farbstoffen ein Motekül Pyrazolonderivat durch ein Molekül einer ortho-Oxykarbonsäure der Benzolreihe ersetzen kann und so gleichfalls zu gelben   walkechten Wolifarbstoffen gelangt.   
 EMI1.3 
   10#6   Teile   m-toluidin   werden tetrazotiert und unter Eiskühlung mit einer   sodaalkatischen     Losung von 7#2 Teilen Salicylsüure kombiniert. Nach Bildung   des Zwischenproduktes gibt man eine mit Soda neutralisierte Lösung von 13 Teilen 1-p-Sulfophenyl-3-methyl-5-pyrazolon hinzu und rührt bis zur Vollendung der Farbstoffbildung. Dann wird auf 70  erwärmt und der Farbstoff mit Salz   gefüllt. Kr färbt Wolle gelb.   
 EMI1.4 
 

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



   <Desc / Clms Page number 1>
 



  Process for the preparation of disazo dyes for wool.



   In the parent patent specification No. 46876 disazo dyes are described, which by combining the tetrazo \ 'orbindlng of the m-tolidine of the constitution
 EMI1.1
 
 EMI1.2
 dye and are millfast even without after-treatment with chromium salts against white wool and cotton.



   It has now been found that a Motekül pyrazolone derivative in these dyes can be replaced by a molecule of an ortho-oxycarboxylic acid of the benzene series and thus yellow milled Woli dyes are also obtained.
 EMI1.3
   10 # 6 parts of m-toluidine are tetrazotized and combined with a soda-alkaline solution of 7 # 2 parts of salicylic acid while cooling with ice. After formation of the intermediate product, a solution of 13 parts of 1-p-sulfophenyl-3-methyl-5-pyrazolone neutralized with soda is added and the mixture is stirred until the dye has formed. Then it is heated to 70 and the dye is filled with salt. Kr dyes wool yellow.
 EMI1.4
 

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

Claims (1)

PATENT-ANSPRUCK : Abänderung des durch das Stammpatent Nr. 46876 geschützten Verfahrons zur Darstellung gelber Disafarbstoffe für Wolle, dadurch gekennzeichnet, dass die Tetrazoverbindung destm-Tolidins an Stelle von 2 Molekülen 1-Sulfoaryl-3-methyl-5-pyrazolon hier mit 1 Molekül EMI1.5 **WARNUNG** Ende CLMS Feld Kannt Anfang DESC uberlappen**. PATENT CLAIM: Modification of the process protected by the parent patent No. 46876 for the preparation of yellow disafouring agents for wool, characterized in that the tetrazo compound destm-tolidine instead of 2 molecules 1-sulfoaryl-3-methyl-5-pyrazolone here with 1 molecule EMI1.5 ** WARNING ** End of CLMS field may overlap beginning of DESC **.
AT47155D 1909-05-15 1910-04-23 Process for the preparation of disazo dyes for wool. AT47155B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE46876X 1909-05-15
DE47155X 1909-05-22

Publications (1)

Publication Number Publication Date
AT47155B true AT47155B (en) 1911-03-27

Family

ID=25749041

Family Applications (1)

Application Number Title Priority Date Filing Date
AT47155D AT47155B (en) 1909-05-15 1910-04-23 Process for the preparation of disazo dyes for wool.

Country Status (1)

Country Link
AT (1) AT47155B (en)

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