CH235449A - Process for the preparation of a trisazo dye. - Google Patents

Process for the preparation of a trisazo dye.

Info

Publication number
CH235449A
CH235449A CH235449DA CH235449A CH 235449 A CH235449 A CH 235449A CH 235449D A CH235449D A CH 235449DA CH 235449 A CH235449 A CH 235449A
Authority
CH
Switzerland
Prior art keywords
dye
amino
combined
acid
blue
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 CH235449A publication Critical patent/CH235449A/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
    • C09B31/16—Trisazo dyes
    • C09B31/22—Trisazo dyes from a coupling component "D" containing directive hydroxyl and amino groups

Landscapes

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

Description

  

      Zusatzpatent    zum     Hauptpatent    Nr. 231710.    Verfahren zur Herstellung eines     Trisazofarbstoffes.            Vorliegendes    Patent bezieht sich auf ein  Verfahren zur     Herstellung        eines        Trisazo-          farbstoffes,    dadurch     gekennzeichnet,    dass man       1-Diazo-4-axyben.zol-3-carbonsäure    in saurem  Medium mit     1-Amino-naphthalin-7-sulfon-          säure    vereinigt,

   den so     erhaltenen        Aminoazo-          Farbstoff        @diazo-fnert,    die     Diazöverbindung    in  saurem Medium mit     1-Amino-2.5-dimethoxy-          benzol        vereinigt,

      wieder     .diazotiert    und die       Diazoverbindung    des so erhaltenen     Amino-          disazofarbs.toffes    in     alkalischem    Medium mit  2 -     Mefhydamino    - 5 -     oxynap@htdialin    - 7     -@sulf        on-          säure    vereinigt.  



  Der so erhaltene     Trisazofarbstoff    ist ein       dunkles    Pulver, das sich in     Wasser    mit       grünstichig    blauer,     in    konzentrierter Schwe  felsäure mit     blauschwarzer    Farbe löst, und  färbt     Baumwolle    in lebhaften,     grünstichig-          blauen,    lichtechten Tönen.

   Die Färbungen  werden durch     Nachbehandeln    mit     Chromi-          oder    Kupfersalzen ohne merkliche     Tan-          änclerung        sehr        waschecht.       <I>Beispiel:

  </I>  Die aus 15,3     Teilen        1-Amino-4-oxybenzol-          3-carbo@nsäure        hergestellte        Diazoverbindung          wird    in     Geigenwart    von     überschüssigem        Na-,          triumacetat        mit    einer     Lösung    des     Natrium-          salzes    von 22,

  3 Teilen     1-Amino-naphthalin-7-          sulfonsäure        vereinigt.    Nach beendeter Kupp  lung     wird        der    Farbstoff     weiterdiäzotiert    und  ,die     Diazoverbindung    in     essigsaurer    Lösung  mit 15     Teilen    1-     Amino-2.5-@dimethoxybenzol     vereinigt. Der Farbstoff wird     abgeschieden     und     weiterdiazotiert.     



  Die     Diazosuspension        vereinigt    man bei  0-5  mit einer     so,daalkalis;chen        Lösung    von  25,3     Teilen        2-MethyIamino-5-oxynaphthalin-          7-sulfo@nsäure,    wobei sich ein Zusatz von       Pyridin,als        vorteilhaft        erweist.  



      Additional patent to main patent No. 231710. Process for the production of a trisazo dye. The present patent relates to a process for the preparation of a trisazo dye, characterized in that 1-diazo-4-axyben.zene-3-carboxylic acid is combined with 1-amino-naphthalene-7-sulfonic acid in an acidic medium,

   the aminoazo-dye @ diazo-fnert thus obtained, the diazo compound combined with 1-amino-2,5-dimethoxybenzene in an acidic medium,

      again .diazotized and the diazo compound of the amino disazofarbs.toff thus obtained is combined in an alkaline medium with 2 - mefhydamino - 5 - oxynap @ htdialin - 7 - @ sulfonic acid.



  The trisazo dye thus obtained is a dark powder which dissolves in water with a greenish blue color and in concentrated sulfuric acid with a blue-black color, and dyes cotton in lively, greenish blue, lightfast shades.

   After treatment with chromium or copper salts, the dyeings become very washable without noticeable tan. <I> example:

  </I> The diazo compound produced from 15.3 parts of 1-amino-4-oxybenzene-3-carbonic acid is in Geigenwart of excess sodium, trium acetate with a solution of the sodium salt of 22,

  3 parts of 1-amino-naphthalene-7-sulfonic acid combined. After the coupling has ended, the dye is further diacetized and the diazo compound is combined in acetic acid solution with 15 parts of 1- amino-2.5-@dimethoxybenzene. The dye is deposited and further diazotized.



  The diazo suspension is combined at 0-5 with an alkaline solution of 25.3 parts of 2-methylamino-5-oxynaphthalene-7-sulfonic acid, the addition of pyridine proving to be advantageous.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines Trsazo- farbstoffes,, dadurch gekennzeichnet, dass man 1-Diazo,-4-oxybenzol-3-carbansäure in saurem Medium mit 1-Amino-naphthalin-7-sulfon- säure vereinigt, den so erhaltenen Aminoazo- farbstoff diazotiert, PATENT CLAIM: Process for the preparation of a Trsazo dye ,, characterized in that 1-diazo, -4-oxybenzene-3-carbanic acid is combined with 1-amino-naphthalene-7-sulfonic acid in an acidic medium, the aminoazo dye diazotized, die Diazoverbin.dung in saurem Medium mit 1-Anino-2.5-dimethoxy- benzol vereinigt, wieder dia.zotiert und die Diazoverbindung des so erhaltenen Amino- disazofarbstoffes in alkalischem Medium mit 2 - Methyla.mino(- 5 - oxynaphthalin - 7 - sulf oii- säure vereinigt. Der ; the Diazoverbin.dung combined in an acidic medium with 1-amino-2,5-dimethoxy-benzene, dia.zotiert again and the diazo compound of the amino-disazo dye thus obtained in an alkaline medium with 2 - Methyla.mino (- 5 - oxynaphthalene - 7 - sulf oiic acid combined. so erhaltene Trisazofarbstoff ist ein dunkles Pulver, das sieh in Wasser mit brünstichig blauer, in konzentrierter Schwe felsäure mit blauschwarzer Farbe löst, und färbt Baumwolle in lebhaften, grünstichig- blaiten, lichtechten Tönen. Die Färbungen werden durch Nachbehandeln mit Chromi- oder Kupfersalzen ohne merkliche Ton- < ind@erung sehr waschecht. The trisazo dye obtained in this way is a dark powder which dissolves in water with a heat-tinged blue, in concentrated sulfuric acid with a blue-black color, and dyes cotton in lively, greenish-blue, lightfast shades. After treatment with chromium or copper salts, the dyeings become very washable without any noticeable tone reduction.
CH235449D 1942-06-02 1943-05-14 Process for the preparation of a trisazo dye. CH235449A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE235449X 1942-06-02
CH231710T 1943-05-14

Publications (1)

Publication Number Publication Date
CH235449A true CH235449A (en) 1944-11-30

Family

ID=25727620

Family Applications (1)

Application Number Title Priority Date Filing Date
CH235449D CH235449A (en) 1942-06-02 1943-05-14 Process for the preparation of a trisazo dye.

Country Status (1)

Country Link
CH (1) CH235449A (en)

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