CH296341A - Process for the preparation of a trisazo dye. - Google Patents

Process for the preparation of a trisazo dye.

Info

Publication number
CH296341A
CH296341A CH296341DA CH296341A CH 296341 A CH296341 A CH 296341A CH 296341D A CH296341D A CH 296341DA CH 296341 A CH296341 A CH 296341A
Authority
CH
Switzerland
Prior art keywords
dye
parts
yellow
water
preparation
Prior art date
Application number
Other languages
German (de)
Inventor
Aktiengesellschaft Ciba
Original Assignee
Ciba Geigy
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 Ciba Geigy filed Critical Ciba Geigy
Publication of CH296341A publication Critical patent/CH296341A/en

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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
    • C09B45/00—Complex metal compounds of azo dyes
    • C09B45/48—Preparation from other complex metal compounds of azo dyes

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

Description

  

      Verfahren    zur Herstellung     eines        Trisazofarbstoües.       <B>Es</B> wurde gefunden, dass man zu einem  wertvollen     Trisazofarbstoff    gelangt, wenn man       1,3-Dioxylienzol    mit dianotierter     2-Amino-l-          oxybenzol-4-sulfonsäure    vereinigt, den Mono  azofarbstoff mit kupferabgebenden Mitteln  behandelt.

   und die erhaltene komplexe Kupfer  verbindung mit dianotiertem     4-(4"-Aminoben-          zoyl    -     ainino)    - 4'-     oxy    - 3'-     earboxy    -1,1'-     azobenzol     kuppelt.  



  Der neue Farbstoff bildet, ein dunkles Pul  ver, (las sieh in Wasser mit gelbbrauner Farbe  löst und Baumwolle in gelbbraunen Tönen  färbt.  



       Beispiel:     37,> Teile     4-(4"-Aminobenzoylamino)-4'-          oxy-3'-eax#boxy-1,1'-azoben7ol,    welches in     übli-          eher    "'eise durch Kondensation von     4-Amino-          4'-oxy-3'-earboxy-1.,1'-azobenzol    mit.     4-Nitro-          benzovlehlorid    und Reduktion der Nitro  gruppe zur     Aminogruppe    erhalten wurde, wer  den in     Forin    des     Natriumsalzes    in 1000 Teilen  Wasser suspendiert und mit 7 Teilen Natrium  nitrit versetzt.

   Die Suspension lässt man lang  sam unter gutem Rühren in 40 Teilen 30     %        iger     Salzsäure verdünnt. mit 400 Teilen Wasser  zufliessen und rührt     noch    einige Zeit bei 10  bis 15 .  



       Tnzwisehen    werden 33 Teile des     Monoazo-          farbstoffes    aus dianotiertem 2-Amino-l-oxy-         benzol-4-sulfonsäure    und     1,3-Dioxybenzol    in  .500 Teilen Wasser gelöst und mit 15 Teilen  kristallisiertem     Natriumacetat    versetzt. Bei  60 bis 70  werden 27 Teile kristallisiertes Kup  fersulfat, gelöst in 100 Teilen Wasser, zuge  führt. Nach einiger Zeit wird der     gekupferte          Monoazofarbstoff        ausgesalzen    und filtriert.  



  Er wird zusammen mit 30 Teilen wasser  freiem     Natriiimearbonat    in 300 Teilen Was  ser gelöst. Die so bereitete Lösung wird in  die Suspension des     Diazokörpers    eingestürzt.  Nach beendeter     Kupplung    wird der Farbstoff  bei 70      ausgesalzen,    filtriert und     getroeknet.  



      Method of making a trisazo dye. It has been found that a valuable trisazo dye is obtained if 1,3-dioxyliazole is combined with dianotated 2-amino-l-oxybenzene-4-sulfonic acid and the mono azo dye is treated with copper-donating agents.

   and the complex copper compound obtained is coupled with dianotated 4- (4 "-aminoben- zoyl-ainino) - 4'-oxy-3'-earboxy -1,1'-azobenzene.



  The new dye forms a dark powder (it dissolves in water with a yellow-brown color and dyes cotton in yellow-brown shades.



       Example: 37,> parts 4- (4 "-Aminobenzoylamino) -4'-oxy-3'-eax # boxy-1,1'-azoben7ol, which is usually produced by condensation of 4-amino-4 '-oxy-3'-earboxy-1., 1'-azobenzene with. 4-Nitrobenzovlehlorid and reduction of the nitro group to the amino group was obtained who suspended the in form of the sodium salt in 1000 parts of water and mixed with 7 parts of sodium nitrite.

   The suspension is slowly diluted in 40 parts of 30% hydrochloric acid with thorough stirring. with 400 parts of water and stir for some time at 10 to 15.



       33 parts of the monoazo dye from dianotized 2-amino-1-oxybenzene-4-sulfonic acid and 1,3-dioxybenzene are dissolved in 500 parts of water and mixed with 15 parts of crystallized sodium acetate. At 60 to 70, 27 parts of crystallized copper sulfate, dissolved in 100 parts of water, are added. After a while the coppered monoazo dye is salted out and filtered.



  It is dissolved together with 30 parts of anhydrous sodium carbonate in 300 parts of water. The solution prepared in this way is collapsed into the suspension of the diazo body. When the coupling is complete, the dye is salted out at 70 °, filtered and dried.

Claims (1)

PATENTANSPRUCH Verfahren zur Herstellung eines Trisazo- farbstoffes, dadurch gekennzeichnet, dass man 1,3-Dioxybenzol mit dianotierter 2-Amino-l- oxybenzol-4-sulfonsä,ure vereinigt, den Mono- azofarbstoff mit kupferabgebenden Mitteln be handelt und die erhaltene komplexe Kupfer verbindung mit dianotiertem 4-(4"-Aminoben- zoylamino) -4'-oxy-3'-carboxy-1,1'-azobenzol kuppelt. Der neue Farbstoff bildet ein dunkles Pul ver, das sich in Wasser mit gelbbrauner Farbe löst und Baumwolle in gelbbraunen Tönen färbt. PATENT CLAIM Process for the production of a trisazo dye, characterized in that 1,3-dioxybenzene is combined with dianotated 2-amino-oxybenzene-4-sulfonic acid, the monoazo dye is treated with copper-releasing agents and the complex copper obtained is treated Compound with dianotized 4- (4 "-Aminoben- zoylamino) -4'-oxy-3'-carboxy-1,1'-azobenzene. The new dye forms a dark powder that dissolves in water with a yellow-brown color and Dyes cotton in yellow-brown tones.
CH296341D 1950-10-11 1950-10-11 Process for the preparation of a trisazo dye. CH296341A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH296341T 1950-10-11

Publications (1)

Publication Number Publication Date
CH296341A true CH296341A (en) 1954-02-15

Family

ID=4489194

Family Applications (1)

Application Number Title Priority Date Filing Date
CH296341D CH296341A (en) 1950-10-11 1950-10-11 Process for the preparation of a trisazo dye.

Country Status (1)

Country Link
CH (1) CH296341A (en)

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