AT47156B - Process for the preparation of a purple disazo dye. - Google Patents

Process for the preparation of a purple disazo dye.

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Publication number
AT47156B
AT47156B AT47156DA AT47156B AT 47156 B AT47156 B AT 47156B AT 47156D A AT47156D A AT 47156DA AT 47156 B AT47156 B AT 47156B
Authority
AT
Austria
Prior art keywords
preparation
purple
disazo dye
dye
parts
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
Application granted granted Critical
Publication of AT47156B publication Critical patent/AT47156B/en

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   <Desc/Clms Page number 1> 
 



  Verfahren zur Darstellung eines   violetten Disazofarbstoffes.   Es wurde gefunden, dass die Tetrazoverbindung des   Dichlordianisidins   der Formel : 
 EMI1.1 
 welches aus Chlornitrophenoläther   (OCjHg : VOg   : Cl = 1 : 2 : 4) leicht dargestellt werden kann, bei Kombination mit 2 Mol. 2-Naphtol-3 : 6-disulfosäure einen rötlich violetten Farbstoff liefert, welcher sowohl zum Färben von Wolle als auch zur Darstellung von Pigmentfarben dienen kann. Diese letzteren sind vorzüglich kalk-, wasser-und ölecht wegen ihrer guten Lichtechtheit und reinen rötlich violetten Nuance von besonderem Werte. 



   Die Darstellung des Farbstoffes kann wie folgt ausgeführt werden :   15#6 Teile Dichlordianisidin werden mit 6#9 Teilen   Natriumnitrit und der nötigen Menge Salzsäure diazotiert und die, wenn nötig filtrierte Lösung in eine bis zum   Schlusse   der Kombination sodaalkalisch gehaltene und mit Eis gekühlte Lösung von 36 Teilen 2-Naphtol-3 : 6-disulfosäure (Dinatriumsalz) einfliessen gelassen. Nach Vollendung der Farb- 
 EMI1.2 
 getrocknet. Seine   Überführung   in Pigmontfarben kann nach den üblichen Methoden erfolgen. 

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



   <Desc / Clms Page number 1>
 



  Process for the preparation of a purple disazo dye. It was found that the tetrazo compound of dichlorodianisidine of the formula:
 EMI1.1
 which can easily be prepared from chloronitrophenol ether (OCjHg: VOg: Cl = 1: 2: 4), when combined with 2 mol. 2-naphthol-3: 6-disulfonic acid provides a reddish violet dye, which is used both for dyeing wool and can be used to represent pigment colors. These latter are especially lime, water and oil because of their good lightfastness and pure reddish violet nuances of particular value.



   The preparation of the dye can be carried out as follows: 15 # 6 parts of dichlorodianisidine are diazotized with 6 # 9 parts of sodium nitrite and the necessary amount of hydrochloric acid and the solution, filtered if necessary, into a solution of soda-alkaline until the end of the combination and cooled with ice 36 parts of 2-naphthol-3: 6-disulfonic acid (disodium salt) were allowed to flow in. After completing the color
 EMI1.2
 dried. It can be converted into Pigmont colors by the usual methods.

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

Claims (1)

PATENT-ANSPRUCH : Verfahren zur Darstellung eines violetten Disazofarbstoffes, dadurch gekennzeichnet, dass man die Tetrazoverbindung aus Dichloridianisidin der Formel : EMI1.3 EMI1.4 **WARNUNG** Ende CLMS Feld Kannt Anfang DESC uberlappen**. PATENT CLAIM: Process for the preparation of a purple disazo dye, characterized in that the tetrazo compound from dichloridisidine of the formula: EMI1.3 EMI1.4 ** WARNING ** End of CLMS field may overlap beginning of DESC **.
AT47156D 1909-08-10 1910-04-23 Process for the preparation of a purple disazo dye. AT47156B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE47156X 1909-08-10

Publications (1)

Publication Number Publication Date
AT47156B true AT47156B (en) 1911-03-27

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ID=5625541

Family Applications (1)

Application Number Title Priority Date Filing Date
AT47156D AT47156B (en) 1909-08-10 1910-04-23 Process for the preparation of a purple disazo dye.

Country Status (1)

Country Link
AT (1) AT47156B (en)

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