CH225499A - Process for the preparation of a tetrakisazo dye. - Google Patents

Process for the preparation of a tetrakisazo dye.

Info

Publication number
CH225499A
CH225499A CH225499DA CH225499A CH 225499 A CH225499 A CH 225499A CH 225499D A CH225499D A CH 225499DA CH 225499 A CH225499 A CH 225499A
Authority
CH
Switzerland
Prior art keywords
preparation
dye
sulfonic acid
tetrakisazo dye
tetrakisazo
Prior art date
Application number
Other languages
German (de)
Inventor
Aktiengesellsc Farbenindustrie
Original Assignee
Ig Farbenindustrie 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 Ig Farbenindustrie Ag filed Critical Ig Farbenindustrie Ag
Publication of CH225499A publication Critical patent/CH225499A/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
    • C09B43/00—Preparation of azo dyes from other azo compounds
    • C09B43/12—Preparation of azo dyes from other azo compounds by acylation of amino groups
    • C09B43/136—Preparation of azo dyes from other azo compounds by acylation of amino groups with polyfunctional acylating agents
    • C09B43/14—Preparation of azo dyes from other azo compounds by acylation of amino groups with polyfunctional acylating agents with phosgene or thiophosgene

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Description

  

      Zusatzpatent    zum     Hauptpatent    Nr. 222252.    Verfahren zur Herstellung eines     Tetrakisazofarbstoffes.       Gegenstand des, vorliegenden Zusatzpa  tentes     ist    ein Verfahren zur     Herstellung    eines       Tetrakisazofarbstoffes,    dadurch gekennzeich  net, dass man die     Diazoverbindung    aus     4-          Nitro-l-aminobenzol,-2-sulfonsäure    mit     4-          Acetoacetylamino-2-methoxy-4'-methyl-1    .

       1'-          azobenzol-3'-sulfon3äure    kuppelt, den erhal  tenen     Disazofarbstoff    reduziert     und    die er  haltene     Aminoverbindung        mit        Phosgen    in das       Harnstoffderivat    überführt.  



  Man erhält auf diese Weise den gleichen       Tetrakisazofarbstoff        wie    er nach :dem Ver  fahren des     schweiz.    Patentes Nr. 220422  durch Kupplung der     Tetrazoverbindung    aus  4.     4'-Diamino,diphenylharnstoff    -3. 3'-     sdisul-          fonsäure    mit     4-Acetoacetylamino-2-methogy-          4'=methyl-1    . l'     azobenzol-3'-sulfonsäure    ent  steht.  



       Beispiel:     436     Gewichtsteile        4-Nitro-2-aminobenzol-          2-su,Ifonsäure    werden in üblicher Weise     di-          azotiert    und die erhaltene     Diazoverbindung       mit einer     sodaalkalischen    Lösung von 854 Ge  wichtsteilen des     Natriumsalzes    der     4-Aceto-          aoetylamino-    2     -methoxy-4'-methyl-1    .     1'-azo-          benzol-3'-sulfonsäure    .gekuppelt.

   Zu dem er  haltenen     Dmsazofarbstoff    wird die     Nitro-          gruppe    reduziert und     die    erhaltene     Amino-          verbindung    mit     Phasgen    in     das        Harnstoff-          d@eTivat        übergeführt.  



      Additional patent to main patent No. 222252. Process for the production of a tetrakisazo dye. The subject of the present Zusatzpa tentes is a process for the production of a tetrakisazo dye, characterized in that the diazo compound from 4-nitro-1-aminobenzene, -2-sulfonic acid with 4-acetoacetylamino-2-methoxy-4'-methyl-1 .

       1'-azobenzene-3'-sulfonic acid couples, the disazo dye obtained is reduced and the amino compound obtained is converted into the urea derivative with phosgene.



  In this way, the same tetrakisazo dye is obtained as it is according to the Swiss method. Patent No. 220422 by coupling the tetrazo compound from 4. 4'-diamino, diphenylurea -3. 3'-disulfonic acid with 4-acetoacetylamino-2-methogy-4 '= methyl-1. l'azobenzene-3'-sulfonic acid is formed.



       Example: 436 parts by weight of 4-nitro-2-aminobenzene-2-su, ifonic acid are diazoated in the usual way and the resulting diazo compound with a soda-alkaline solution of 854 parts by weight of the sodium salt of 4-aceto-aoetylamino-2-methoxy-4 '-methyl-1. 1'-azo-benzene-3'-sulfonic acid. Coupled.

   The nitro group is reduced to the dmsazo dye obtained and the amino compound obtained is converted into the urea d @ e derivative with phasgen.

Claims (1)

PATENTANSPR'üCH: Verfahren zur Herstellung eines Tetrakis- azofarbsto-ffes, dadurch gekennzeichnet, dass man : PATENT CLAIM: Process for the production of a tetrakis azo dye, characterized in that: die Diazoverbindung aus 4-Nitro-l- aminobenzol-2-sulfonsäure mit 4-Acetoacetyl- amino-2-methoxy-4'-methyl-1 . 1'-azobenzol- 3'-sulfonsäure kuppest, den erhaltenen Dis- azofarbstoff .reduziert und die erhaltene Aminoverbindung mit Phosgen in das Harn stoffderivat überführt. the diazo compound from 4-nitro-1-aminobenzene-2-sulfonic acid with 4-acetoacetylamino-2-methoxy-4'-methyl-1. 1'-azobenzene-3'-sulfonic acid kuppest, the disazo dye obtained .reduziert and the amino compound obtained is converted into the urea derivative with phosgene.
CH225499D 1939-12-09 1940-10-07 Process for the preparation of a tetrakisazo dye. CH225499A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE91239X 1939-12-09
CH222252T 1940-10-07

Publications (1)

Publication Number Publication Date
CH225499A true CH225499A (en) 1943-01-31

Family

ID=25726614

Family Applications (1)

Application Number Title Priority Date Filing Date
CH225499D CH225499A (en) 1939-12-09 1940-10-07 Process for the preparation of a tetrakisazo dye.

Country Status (1)

Country Link
CH (1) CH225499A (en)

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