CH268406A - Process for the preparation of an azo dye. - Google Patents

Process for the preparation of an azo dye.

Info

Publication number
CH268406A
CH268406A CH268406DA CH268406A CH 268406 A CH268406 A CH 268406A CH 268406D A CH268406D A CH 268406DA CH 268406 A CH268406 A CH 268406A
Authority
CH
Switzerland
Prior art keywords
mol
amino
azo dye
preparation
dye
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 CH268406A publication Critical patent/CH268406A/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
    • C09B43/16—Preparation of azo dyes from other azo compounds by acylation of amino groups with polyfunctional acylating agents linking amino-azo or cyanuric acid residues

Landscapes

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

Description

  

  Zusatzpatent zum Hauptpatent Nr. 264908.    Verfahren zur Herstellung eines     Azofarbstoffes.       Es wurde gefunden, dass man zu einem  wertvollen     Azofarbstoff    gelangt, wenn man  1     Mol    des aus 1     Mol        Cy        anurchlorid,    2     Mol          2-Amino-5-oxynaphthalin-7-sulfonsäure    und  1     Mol        Aminobenzol    erhältlichen     t,ernären    Kon  densationsproduktes mit 2     Mol        diazotiertem          3-Amino-4-oxy-acetophenon    vereinigt.  



  Der neue Farbstoff bildet ein schwarzes  Pulver, das Baumwolle nach dem ein- oder       zweibadigen        Nachkupferungsverfahren    in  wasch- und lichtechten rubinroten Tönen  färbt.  



  Die Kupplung wird beim vorliegenden Ver  fahren mit Vorteil in alkalischem, z. B.     erd-          alkali-hydroxydalkalischem,Medium    durchge  führt.  



       Beispiel:     15,1 Teile     3-Amino-4-oxy-acetophenon    wer  den unter Zusatz von 6,9 Teilen     Natriumnitrit     und 27 Teilen 30     o/oiger    Salzsäure bei<B>00</B>     diazo-          tiert    und die     Diazoverbindung    mit 36,8 Teilen  des     ternären    Kondensationsproduktes aus  1     Mol        Cy        anurehlorid,

      2     Mol    2-Amino-5-oxy-         naphthalin-7-sulfonsäure    und 1     Mol        Amino-          benzol,    das als     Natriumsalz    unter Zusatz von  50 Teilen 20     o/oigem        Calciumhydroxyd    in 500  Teilen Wasser gelöst wurde, vereinigt. Nach  4 Stunden wird der gebildete Farbstoff mit  tels Salzsäure abgeschieden und     abfiltriert.     Der     Filterrüekstand    wird als     Natriumsalz    ge  löst. Aus der Lösung wird der Farbstoff mit  Kochsalz abgeschieden, filtriert und getrock  net.



  Additional patent to main patent No. 264908. Process for the production of an azo dye. It has been found that a valuable azo dye is obtained if 1 mole of the diazotized ternary condensation product obtainable from 1 mole of cyano chloride, 2 moles of 2-amino-5-oxynaphthalene-7-sulfonic acid and 1 mole of aminobenzene is used 3-Amino-4-oxy-acetophenone combined.



  The new dye forms a black powder that dyes cotton in washable and lightfast ruby-red shades using the one or two-bath post-copper plating process.



  The coupling will drive in the present Ver with advantage in alkaline, z. B. earth-alkali-hydroxyd-alkaline medium runs through.



       Example: 15.1 parts of 3-amino-4-oxy-acetophenone are diazotized with the addition of 6.9 parts of sodium nitrite and 27 parts of 30% hydrochloric acid at 00 and the diazo compound with 36 , 8 parts of the ternary condensation product from 1 mol of Cy anurehlorid,

      2 moles of 2-amino-5-oxynaphthalene-7-sulfonic acid and 1 mole of aminobenzene, which was dissolved as the sodium salt with the addition of 50 parts of 20% calcium hydroxide in 500 parts of water, combined. After 4 hours, the dye formed is deposited using hydrochloric acid and filtered off. The filter residue is dissolved as the sodium salt. The dye is precipitated from the solution with common salt, filtered and net getrock.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines Azofarb- stoffes, dadurch gekennzeichnet, dass man 1 Mol des aus 1 Mol Cyanurchlorid 2 Mol 2-Amino-5-oxynaphthalin-7-sulfonsäure und 1 Mol Aminobenzol erhältlichen ternären Kon densationsproduktes mit 2 Mol diazotiertem -3-Amino-4-oxy-acetophenon vereinigt. PATENT CLAIM: Process for the production of an azo dye, characterized in that 1 mol of the ternary condensation product obtainable from 1 mol of cyanuric chloride, 2 mol of 2-amino-5-oxynaphthalene-7-sulfonic acid and 1 mol of aminobenzene, is mixed with 2 mol of diazotized -3- Amino-4-oxy-acetophenone combined. Der neue Farbstoff bildet ein schwarzes Pulver, das Baumwolle nach dem ein- oder zweibadigen Naehkupferungsverfahren in wasch- und lichtechten rubinroten Tönen färbt. The new dye forms a black powder that dyes cotton in washable and lightfast ruby red tones using the one or two bath sewing process.
CH268406D 1947-07-04 1947-07-04 Process for the preparation of an azo dye. CH268406A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH264908T 1947-07-04
CH268406T 1947-07-04

Publications (1)

Publication Number Publication Date
CH268406A true CH268406A (en) 1950-05-15

Family

ID=25730772

Family Applications (1)

Application Number Title Priority Date Filing Date
CH268406D CH268406A (en) 1947-07-04 1947-07-04 Process for the preparation of an azo dye.

Country Status (1)

Country Link
CH (1) CH268406A (en)

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