CH185844A - Process for the preparation of an azo dye. - Google Patents

Process for the preparation of an azo dye.

Info

Publication number
CH185844A
CH185844A CH185844DA CH185844A CH 185844 A CH185844 A CH 185844A CH 185844D A CH185844D A CH 185844DA CH 185844 A CH185844 A CH 185844A
Authority
CH
Switzerland
Prior art keywords
dye
azo dye
preparation
aminobenzene
methoxy
Prior art date
Application number
Other languages
German (de)
Inventor
Gesellschaft Fuer Chemis Basel
Original Assignee
Chem Ind Basel
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 Chem Ind Basel filed Critical Chem Ind Basel
Publication of CH185844A publication Critical patent/CH185844A/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
    • C09B29/00—Monoazo dyes prepared by diazotising and coupling
    • C09B29/06—Monoazo dyes prepared by diazotising and coupling from coupling components containing amino as the only directing group
    • C09B29/08—Amino benzenes
    • C09B29/0805—Amino benzenes free of acid groups
    • C09B29/0807—Amino benzenes free of acid groups characterised by the amino group
    • C09B29/0808—Amino benzenes free of acid groups characterised by the amino group unsubstituted amino group
    • 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
    • C09B29/00—Monoazo dyes prepared by diazotising and coupling
    • C09B29/06—Monoazo dyes prepared by diazotising and coupling from coupling components containing amino as the only directing group
    • C09B29/08—Amino benzenes

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

Description

  

  Verfahren zur Herstellung eines     Azofarbstoffes.       Es wurde gefunden, dass man     einen        Azo-          farbstoff    erhält, wenn man     diazotiertes        1-          Aminobenzol-4-methylsulfon    in     saurem.    Me  dium mit     1-Amino-2-methoxy-5-methylben-          zol        vereinigt.     



  Der so erhältliche Farbstoff bildet ein  gelbrotes Pulver, das sich in organischen  Lösungsmitteln, wie Aceton,     Essigester    usw.,  mit oranger Farbe löst. Durch geeignete  Zusätze in feine     Verteilung    gebracht, färbt  der Farbstoff     Acetatseide    in echten orangen  Tönen.

      <I>Beispiel:</I>    <B>171</B> Teile     1-Aminobenzol-4-methylsulfon     werden in salzsaurer Lösung in üblicher  Weise mit 69     Teilen.        Natriumnitrit        diazotiert.     Zu der     Diazolösung    lässt man eine wässerige       Lösung    von 137 Teilen     1-Amino-2-methoxy-          5-methylbenzol    und der erforderlichen Menge       Salzsäure        zutropfen.    Man     rührt,    bis die    Kupplung,

   die man gegebenenfalls durch  sorgfältige Zugabe     säurebindender    oder ab  stumpfender Zusätze     beschleunigt,    beendet  ist. Hierauf wird der Farbstoff     filtriert,     neutral .gewaschen und getrocknet.



  Process for the preparation of an azo dye. It has been found that an azo dye is obtained when diazotized 1-aminobenzene-4-methylsulfone is dissolved in acid. Medium combined with 1-amino-2-methoxy-5-methylben- zene.



  The dye thus obtainable forms a yellow-red powder that dissolves in organic solvents such as acetone, ethyl acetate, etc., with an orange color. Finely dispersed by suitable additives, the dye acetate silk dyes in real orange tones.

      <I> Example: </I> <B> 171 </B> parts of 1-aminobenzene-4-methylsulfone are used in hydrochloric acid solution in the usual way with 69 parts. Sodium nitrite diazotized. An aqueous solution of 137 parts of 1-amino-2-methoxy-5-methylbenzene and the required amount of hydrochloric acid are added dropwise to the diazo solution. Stir until the clutch

   which is optionally accelerated by careful addition of acid-binding or blunt additives, has ended. The dye is then filtered, washed until neutral and dried.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines Azo- farbstoffes, dadurch gekennzeichnet, dass man diazotiertes 1-Aminobenzol-4-methyl- sulfon in saurem Medium mit 1-Amino-2- methoxy-5-methylbenzol vereinigt. Der so erhältliche Farbstoff bildet ein gelbrotes Pulver, das sich in organischen Lösungsmitteln, wie Aceton, Essigester usw., mit oranger Farbe löst. Claim: Process for the production of an azo dye, characterized in that diazotized 1-aminobenzene-4-methyl-sulfone is combined with 1-amino-2-methoxy-5-methylbenzene in an acidic medium. The dye thus obtainable forms a yellow-red powder that dissolves in organic solvents such as acetone, ethyl acetate, etc., with an orange color. Durch geeig nete Zusätze in feine Verteilung gebracht, färbt der Farbstoff Acetatseide in echten orangen Tönen. Finely dispersed with suitable additives, the dye acetate silk dyes in real orange tones.
CH185844D 1935-01-29 1935-01-29 Process for the preparation of an azo dye. CH185844A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH185844T 1935-01-29
CH183204T 1935-01-29

Publications (1)

Publication Number Publication Date
CH185844A true CH185844A (en) 1936-08-15

Family

ID=25720849

Family Applications (1)

Application Number Title Priority Date Filing Date
CH185844D CH185844A (en) 1935-01-29 1935-01-29 Process for the preparation of an azo dye.

Country Status (1)

Country Link
CH (1) CH185844A (en)

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