CH155453A - Process for the preparation of a new monoazo dye. - Google Patents

Process for the preparation of a new monoazo dye.

Info

Publication number
CH155453A
CH155453A CH155453DA CH155453A CH 155453 A CH155453 A CH 155453A CH 155453D A CH155453D A CH 155453DA CH 155453 A CH155453 A CH 155453A
Authority
CH
Switzerland
Prior art keywords
preparation
new
red
monoazo dye
dye
Prior art date
Application number
Other languages
German (de)
Inventor
A-G J R Geigy
Original Assignee
Geigy Ag J R
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 Geigy Ag J R filed Critical Geigy Ag J R
Publication of CH155453A publication Critical patent/CH155453A/en

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09BORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B29/00Monoazo dyes prepared by diazotising and coupling
    • C09B29/24Monoazo dyes prepared by diazotising and coupling from coupling components containing both hydroxyl and amino directing groups
    • C09B29/28Amino naphthols
    • C09B29/30Amino naphtholsulfonic acid

Landscapes

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

Description

  

      Verfahren    zur Darstellung eines     neuen        Monoazofarbstoffes.       Es wurde gefunden, dass man einen neuen  wertvollen     Monoazofarbstoff    erhält, wenn  man die     Diazoverbindung    von     2-Amino-di-          phenyläther-4-sulfäthylanilid    mit     p-Toluol-          sulfo-l-amino-8-naphthol-    3 . 6 -     disulfosäure     kombiniert.  



  Der neue Farbstoff stellt ein rotes Pul  ver dar, welches in Wasser mit lebhaft roter,  in konzentrierter Schwefelsäure mit trüb  blauroter Farbe löslich ist. Er färbt auf  Wolle und Seide ein sehr klares Rot von sehr  guter Licht- und     Walkechtheit    und vorzüg  licher     Seewasserechtheit.            Beispiel;

       36,8 kg 2 -     Aminodiphenyläther    - 4 -     sulf-          äthylanilid,    welches man erhält dadurch, dass  man     2-Nitrochlorbenzol-4-sulfochlorid    mit       11lonoäthylanilin    behandelt, das so erhaltene       2-Nitrochlorbenzol-4-sulfäthylanilid    mit     Phe-          nolnatrium    kondensiert und hernach     mit    Ei  sen reduziert, werden     diazotiert.    Die     Diazo-          lösung    lässt man in eine wässerige Lösung  von 47,

  3 kg     p-Toluolsulfo-l-amino-8-naph-          thol-3    .     6-disulfosäure    und überschüssiges Na-         triumacetat    einlaufen. Durch Zugabe von       Sodalösung    wird allmählich neutralisiert.  Nach beendeter Kupplung wird aufgeheizt,       ausgesalzen,    filtriert und getrocknet. Der er  haltene Farbstoff bildet ein rotes Pulver, das  in Wasser mit lebhaft roter, in konzentrier  ter Schwefelsäure mit trüb blauroter Farbe  löslich ist.

   Er färbt auf Wolle und Seide  ein sehr klares Rot von sehr guter     Licht-          und        Walkechtheit    und vorzüglicher     Seewas-          serechtheit.  



      Process for the preparation of a new monoazo dye. It has been found that a new valuable monoazo dye is obtained if the diazo compound of 2-amino-diphenyl ether-4-sulfethylanilide with p-toluenesulfo-1-amino-8-naphthol-3. 6 - disulfonic acid combined.



  The new dye is a red powder that is soluble in water with a vivid red color, and in concentrated sulfuric acid with a cloudy blue-red color. It dyes wool and silk a very clear red with very good lightfastness and millfastness and excellent seawaterfastness. Example;

       36.8 kg of 2-aminodiphenyl ether-4-sulfethylanilide, which is obtained by treating 2-nitrochlorobenzene-4-sulfochloride with 11lonoethylaniline, condensing the 2-nitrochlorobenzene-4-sulfethylanilide with phenol sodium and then with it Iron reduced, are diazotized. The diazo solution is immersed in an aqueous solution of 47,

  3 kg of p-toluenesulfo-1-amino-8-naphthol-3. Run in 6-disulfonic acid and excess sodium acetate. It is gradually neutralized by adding soda solution. After the coupling has ended, the mixture is heated, salted out, filtered and dried. The dye he holds forms a red powder that is soluble in water with a vivid red color, and in concentrated sulfuric acid with a cloudy blue-red color.

   It dyes wool and silk a very clear red with very good lightfastness and millfastness and excellent seawaterfastness.

 

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines neuen Monoazofarbstoffes, dadurch gekennzeichnet, dass man die Diazoverbindung von 2-Amino- diphenyläther-4-sulfäthylanilid mit p-Toluol- sulfo -1- amino-8-naphthol-3 . 6-disulfosäure kombiniert. Der neue Farbstoff stellt ein rotes Pulver dar, das sich in Wasser mit leb haft roter, in konzentrierter Schwefelsäure mit trüb blauroter Farbe löst. Claim: Process for the preparation of a new monoazo dye, characterized in that the diazo compound of 2-amino diphenyl ether-4-sulfethylanilide with p-toluenesulfo-1-amino-8-naphthol-3. 6-disulfonic acid combined. The new dye is a red powder that dissolves in water with a vivid red color and in concentrated sulfuric acid with a cloudy blue-red color. Er färbt Wolle und Seide in sehr klarer roter Nuance von sehr guter Licht- und Walkechtheit und vorzüglicher Seewasserechtheit. It dyes wool and silk in a very clear red shade of very good lightfastness and millfastness and excellent seawaterfastness.
CH155453D 1931-11-12 1931-11-02 Process for the preparation of a new monoazo dye. CH155453A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH155453T 1931-11-12

Publications (1)

Publication Number Publication Date
CH155453A true CH155453A (en) 1932-06-30

Family

ID=4409964

Family Applications (1)

Application Number Title Priority Date Filing Date
CH155453D CH155453A (en) 1931-11-12 1931-11-02 Process for the preparation of a new monoazo dye.

Country Status (1)

Country Link
CH (1) CH155453A (en)

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