CH327160A - Process for the preparation of a disazo dye - Google Patents

Process for the preparation of a disazo dye

Info

Publication number
CH327160A
CH327160A CH327160DA CH327160A CH 327160 A CH327160 A CH 327160A CH 327160D A CH327160D A CH 327160DA CH 327160 A CH327160 A CH 327160A
Authority
CH
Switzerland
Prior art keywords
preparation
disazo dye
parts
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 CH327160A publication Critical patent/CH327160A/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
    • C09B31/00—Disazo and polyazo dyes of the type A->B->C, A->B->C->D, or the like, prepared by diazotising and coupling
    • C09B31/02—Disazo dyes
    • C09B31/08—Disazo dyes from a coupling component "C" containing directive hydroxyl and amino groups

Landscapes

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

Description

  

      Zusatzpatent    zum     Hauptpatent    Nr. 285140    Verfahren zur Herstellung eines     Disazofarbstoffes            Gegenstand    der vorliegenden     Erfindung     ist. ein Verfahren zur Herstellung eines Dis  azofarbstoffes, welches darin besteht, dass man    1.

       Mol    der     Diazoverbindung    aus der     Amino-          inonoazoverbindung    der Formel  
EMI0001.0010     
         niit    1     Mol    der     2-Acylainino-5-oxynaphthalin-7-sulfonsäure    der Formel  
EMI0001.0014     
         ,kuppelt.     Im nachstehenden Beispiel. bedeuten die  Teile     Gewielitsteile;

      die Temperaturen sind in       Celsiusgraden        angegeben..    \         Beispiel.     39 Teile der     Aminomonoazoverbindung    der       Formel    (I) werden in 500 Teilen Wasser und  10 Teilen konzentrierter Natronlauge gelöst.  Man setzt dieser Lösung bei 10  nacheinander  7 Teile     Natriumnitrit    und 40 Teile konzen  trierte     Salzsäure    zu.

   Die entstandene Suspen  sion wird während 1-2 Stunden bei 10      ge-          rübrt.    Die gebildete     Diazoverbindung    lässt       iuan    alsdann zu einer Lösung von 42,1 Teilen  der     2-Aey    l     amino    - 5 -     oxy        naphtlialin    - 7 -     sulfon-          säure    der Formel     (II)    und 50 Teilen Natrium-         earbonat    in 400 Teilen Wasser fliessen. Die ,  Kupplung erfolgt sehr rasch.

   Nach dreistün  digem Rühren wird der Farbstoff aus der  Reaktionslösung     ausgesalzen,        abfiltriert    und  bei 90      iin    Vakuum getrocknet.  



  Der neue     D-isazofarbstoff    ist ein rotbraunes  Pulver, löst sich in Wasser mit roter Farbe  und färbt Baumwolle und Fasern aus regene  rierter     Cellulose    in scharlachroten Tönen; wel  che durch Nachkupfern licht-, wasch- und  schweissecht werden.



      Additional patent to main patent No. 285140 Process for the preparation of a disazo dye is the subject of the present invention. a process for the preparation of a dis azo dye, which consists in that 1.

       Mol of the diazo compound from the amino inonoazo compound of the formula
EMI0001.0010
         with 1 mole of the 2-acylino-5-oxynaphthalene-7-sulfonic acid of the formula
EMI0001.0014
         , clutch. In the example below. the parts mean Gewielit parts;

      the temperatures are given in degrees Celsius .. \ example. 39 parts of the aminomonoazo compound of the formula (I) are dissolved in 500 parts of water and 10 parts of concentrated sodium hydroxide solution. 7 parts of sodium nitrite and 40 parts of concentrated hydrochloric acid are added to this solution at 10 in succession.

   The resulting suspension is stirred at 10 for 1-2 hours. The diazo compound formed is then allowed to flow into a solution of 42.1 parts of the 2-Aey / amino-5-oxy naphthalene-7-sulfonic acid of the formula (II) and 50 parts of sodium carbonate in 400 parts of water. 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 D-isazo dye is a red-brown powder that dissolves in water with a red color and dyes cotton and fibers made of regenerated cellulose in scarlet shades; which are made light, wash and sweat-proof by re-coppering.

Claims (1)

PATENTANSPRUCH Verfahren zur Herstellung eines Disazo- farbstoffes, dadurch gekennzeichnet, dass man 1 112o1 der Diazoverbindung ans der Amino- monoazoverbindung der Formel EMI0002.0001 s mit 1 Mol der 2-Ae@rlamino-5-oxynaphtbalin-%-siilfonsäure der Formel EMI0002.0005 kuppelt. PATENT CLAIM Process for the preparation of a disazo dye, characterized in that 1 112o1 of the diazo compound is mixed with the amino monoazo compound of the formula EMI0002.0001 s with 1 mol of the 2-ae @ rlamino-5-oxynaphtbalin -% - silfonsäure of the formula EMI0002.0005 clutch. Der neue Disazofarbstoff ist ein rotbraunes Pulver, löst. sielt in 'VNasser mit roter Farbe s und färbt Baumwolle und Fasern aus regene- rierter Cell-Lilose in seliarlaehroten Tönen, welehe dureh Naehkiipfern liebt-, w,seh- und sehweisseelit werden. The new disazo dye is a red-brown powder that dissolves. Sits in 'VWasser with red color and dyes cotton and fibers from regenerated Cell-Lilose in seliarlae-red tones, which are loved by Naehkiipfern, w, see and see elite.
CH327160D 1950-07-06 1954-03-05 Process for the preparation of a disazo dye CH327160A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH285140T 1950-07-06
CH327160T 1954-03-05

Publications (1)

Publication Number Publication Date
CH327160A true CH327160A (en) 1958-01-15

Family

ID=25732498

Family Applications (1)

Application Number Title Priority Date Filing Date
CH327160D CH327160A (en) 1950-07-06 1954-03-05 Process for the preparation of a disazo dye

Country Status (1)

Country Link
CH (1) CH327160A (en)

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