CH183593A - Process for the preparation of an azo dye. - Google Patents

Process for the preparation of an azo dye.

Info

Publication number
CH183593A
CH183593A CH183593DA CH183593A CH 183593 A CH183593 A CH 183593A CH 183593D A CH183593D A CH 183593DA CH 183593 A CH183593 A CH 183593A
Authority
CH
Switzerland
Prior art keywords
azo dye
preparation
oxynaphthalene
methylsulfone
aminobenzene
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 CH183593A publication Critical patent/CH183593A/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
    • C09B29/10—Monoazo dyes prepared by diazotising and coupling from coupling components containing hydroxy as the only directing group
    • C09B29/16—Naphthol-sulfonic acids

Landscapes

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

Description

  

      Zusatzpatent    zum Hauptpatent Nr.     1.80959.       Verfahren zur Herstellung eines     Azofarbstoifes.       Es wurde gefunden, dass man einen       Azofa.rbstoff    erhält, wenn man     diazotiertes          1-Aminobenzol-2-methylsulfon    in saurem Me  dium mit     \2-Phenylamino-8-oxynaphthalin-6-          sulfonsäure    vereinigt.  



  Der so erhältliche Farbstoff bildet ein  dunkles Pulver und färbt Wolle aus saurem  Bade in blauroten Tönen von guter Licht  echtheit und zeichnet sich durch ein     hervor-          ragendes        Egalisiervermögen    aus.

      <I>Beispiel:</I>    171 Teile     1-Aminobenzol-2-methylsulfon     werden in salzsaurer Lösung in üblicher       'U',    Eise mit 70 Teilen     Natriumnitrit        diazo-          tiert.    Zu der     Diazolösung    lässt man eine neu  trale Lösung von 317 Teilen     2-Phenylamino-          -        oxynaphthalin    - 6 -     sulfonsäure        zutropfen.     Man rührt, bis die Kupplung,

   die man ge-         gebenenfalls    durch sorgfältige Zugabe säure  bindender oder     abstumpfender    Zusätze be  schleunigt, beendet ist. Hierauf wird die  Lösung neutral     gestellt    und     ausgesalzen,     worauf der Farbstoff filtriert und getrocknet  wird.



      Additional patent to main patent No. 1.80959. Process for the production of an azo dye. It has been found that an azo dye is obtained when diazotized 1-aminobenzene-2-methylsulfone is combined with 2-phenylamino-8-oxynaphthalene-6-sulfonic acid in acidic medium.



  The dye obtainable in this way forms a dark powder and dyes wool from an acid bath in blue-red shades of good lightfastness and is characterized by excellent leveling properties.

      <I> Example: </I> 171 parts of 1-aminobenzene-2-methylsulfone are diazotized with 70 parts of sodium nitrite in a hydrochloric acid solution in the customary 'U', ice. A neutral solution of 317 parts of 2-phenylamino-oxynaphthalene-6-sulfonic acid is added dropwise to the diazo solution. Stir until the clutch

   which can be accelerated by careful addition of acid-binding or deadening additives, has ended. The solution is then made neutral and salted out, whereupon the dye is filtered and dried.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines Azofa.rb- stoffes, dadurch gekennzeichnet, dass man diazotiertes 1-Aminobenzol-2-methylsulfon in saurem Medium mit 2-Phenylamino-8-oxy- naphthalin-6-sulfonsäure vereinigt. Der so erhältliche Farbstoff bildet ein dunkles Pulver und färbt Wolle aus saurem Bade in blauroten Tönen von guter Licht- ecUtheit und zeichnet sieh durch ein hervor ragendes Egalisiervermögen aus. PATENT CLAIM: A process for the production of an azo-fiber, characterized in that diazotized 1-aminobenzene-2-methylsulfone is combined with 2-phenylamino-8-oxynaphthalene-6-sulfonic acid in an acidic medium. The dye obtainable in this way forms a dark powder and dyes wool from an acid bath in blue-red shades of good lightness and is characterized by an excellent leveling capacity.
CH183593D 1934-09-28 1934-09-28 Process for the preparation of an azo dye. CH183593A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH180959T 1934-09-28
CH183593T 1934-09-28

Publications (1)

Publication Number Publication Date
CH183593A true CH183593A (en) 1936-04-15

Family

ID=25720482

Family Applications (1)

Application Number Title Priority Date Filing Date
CH183593D CH183593A (en) 1934-09-28 1934-09-28 Process for the preparation of an azo dye.

Country Status (1)

Country Link
CH (1) CH183593A (en)

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