CH332045A - Process for the preparation of a disazo dye - Google Patents

Process for the preparation of a disazo dye

Info

Publication number
CH332045A
CH332045A CH332045DA CH332045A CH 332045 A CH332045 A CH 332045A CH 332045D A CH332045D A CH 332045DA CH 332045 A CH332045 A CH 332045A
Authority
CH
Switzerland
Prior art keywords
disazo dye
parts
preparation
formula
red
Prior art date
Application number
Other languages
German (de)
Inventor
Hans Dr Ischer
Original Assignee
Sandoz 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 Sandoz Ag filed Critical Sandoz Ag
Publication of CH332045A publication Critical patent/CH332045A/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B35/00—Disazo and polyazo dyes of the type A<-D->B prepared by diazotising and coupling
    • C09B35/02—Disazo dyes
    • C09B35/039—Disazo dyes characterised by the tetrazo component
    • C09B35/28—Disazo dyes characterised by the tetrazo component the tetrazo component containing two aryl nuclei linked by at least one of the groups —CON<, —SO2N<, —SO2—, or —SO2—O—

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Coloring (AREA)

Description

  

      'Lnsatzpatent    zum hauptpatent Nr. 28.5140    Verfahren zur Herstellung eines     Disazofarbstoffes            Gegenstand    der vorliegenden Erfindung  ist ein     Verfahren    7111-     IIerstellun-    eines     Dis-          azofarbstoffes,        welches    darin besteht.,     da1-.)

      man    1     11-Tol    der     Diazoverbindung    ans der     Arnino-          monoazoverbindung    der Formel  
EMI0001.0014     
         10        mit.    1     1Iol    der     ?-Aeylamino-5-oxynaphtbalin-7-sulfonsä.rire    der     Formel     
EMI0001.0020     
         hoppelt.     Im     naehstehenden    Beispiel bedeuten die  Teile     Clewiehtsteile;    die Temperaturen sind  in     Celsiusgraden    angegeben.  



  <I>Beispiel</I>       -10,-1    Teile der     Aminomonoazoverbindung     der     Formel    (1) werden in 500 Teilen Wasser  und<B>1.0</B>     Teilen    konzentrierter Natronlauge     ge.     löst. plan setzt dieser Lösung bei     1.0         naehein-          mider    7 Teile     Natriumnitrit    und 10 Teile     kon-          zeritrierte    Salzsäure zu.

   Die entstandene Sus  pension     wird    während 1-2 Stunden bei 10        @@crülirt,        1.)1e    gebildete     Diazoverbindung    lässt       nian    alsdann zu einer Lösung von     11-,6    Teilen  oder     2-i#eylimiiio-7)-oxyiiaphtlialin-7-,#iilfoii-          S        i        ure        der        Formel        (11)        und        50        Teilen    Natrium-         earbonat    in.

   100 Teilen Wasser fliessen. Die  Kupplung erfolgt sehr rasch. Nach dreistün  digem Rühren wird der Farbstoff aus der  Reaktionslösung     ausgesalzen,        abfiltriert        und     bei 90  im Vakuum getrocknet.  



  Der neue     Disazofarbstoff    ist ein rotbraunes  Pulver, löst sich in Wasser mit roter Farbe  und färbt Baumwolle und Fasern aus regene  rierter     Cellulose    in     seharlaehroten    Tönen, wel  che durch     1*NTachkupfern    licht-, wasch- und       seliweissecht    werden.



      Inserting patent for the main patent No. 28.5140 Process for the production of a disazo dye. The subject matter of the present invention is a process 7111- IIerstellung- of a disazo dye, which consists in that.

      1 11-Tol of the diazo compound and the amino monoazo compound of the formula
EMI0001.0014
         10 with. 1 1Iol of? -Aeylamino-5-oxynaphtbalin-7-sulfonic acid of the formula
EMI0001.0020
         hops. In the example below the parts mean clew parts; the temperatures are given in degrees Celsius.



  <I> Example </I> -10, -1 parts of the aminomonoazo compound of the formula (1) are in 500 parts of water and 1.0 parts of concentrated sodium hydroxide solution. solves. Plan adds 7 parts of sodium nitrite and 10 parts of concentrated hydrochloric acid to this solution at 1.0.

   The resulting suspension is crülirt for 1-2 hours at 10 @@, 1.) The diazo compound formed can then nian to a solution of 11-, 6 parts or 2-i # eylimiiio-7) -oxyiiaphtlialin-7 -, # iilfoii- acid of the formula (11) and 50 parts of sodium carbonate in.

   100 parts of water flow. The coupling takes place very quickly. After three hours of stirring, the dye is salted out from the reaction solution, filtered off and dried at 90 ° in vacuo.



  The new disazo dye is a red-brown powder that dissolves in water with a red color and dyes cotton and fibers from regenerated cellulose in light-red tones, which are light-, wash- and seli-white-proof with 1 * NTachcopper.

Claims (1)

PATENTANSPRUCH Verfahren zur Herstellung eines Disazo- farbstoffes, dadurch gekennzeichnet, dass man 1 Mol der Diazoverbindung aus der Amino- monoazoverbindung der Formel EMI0002.0001 mit 1 Mol der 2-Acylamino-5-oxvnaphthalin-7-snlfonsäur e der Formel EMI0002.0004 kuppelt. PATENT CLAIM Process for the preparation of a disazo dye, characterized in that 1 mol of the diazo compound is obtained from the amino monoazo compound of the formula EMI0002.0001 with 1 mol of 2-acylamino-5-oxynaphthalene-7-sulfonic acid of the formula EMI0002.0004 clutch. Der neue Disazofarbstoff ist ein rotbraunes Pulver, löst sich in Wasser mit roter Farbe und färbt Baumwolle und Fasern aus regene- rierter Cellulose in seharlaehroten Tönen, wel- ehe dureh Naehkupfern lieht-, waseh- und sehweisseeht werden. The new disazo dye is a red-brown powder that dissolves in water with a red color and dyes cotton and fibers made from regenerated cellulose in shades of scarlet red, which can be seen through sewing copper, whiteness and whiteness.
CH332045D 1950-07-06 1954-03-05 Process for the preparation of a disazo dye CH332045A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH285140T 1950-07-06
CH332045T 1954-03-05

Publications (1)

Publication Number Publication Date
CH332045A true CH332045A (en) 1958-08-15

Family

ID=25732503

Family Applications (1)

Application Number Title Priority Date Filing Date
CH332045D CH332045A (en) 1950-07-06 1954-03-05 Process for the preparation of a disazo dye

Country Status (1)

Country Link
CH (1) CH332045A (en)

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