CH202745A - Process for the preparation of an azo dye. - Google Patents

Process for the preparation of an azo dye.

Info

Publication number
CH202745A
CH202745A CH202745DA CH202745A CH 202745 A CH202745 A CH 202745A CH 202745D A CH202745D A CH 202745DA CH 202745 A CH202745 A CH 202745A
Authority
CH
Switzerland
Prior art keywords
preparation
azo dye
dye
diphenylamine
nitrobenzene
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 CH202745A publication Critical patent/CH202745A/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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Coloring (AREA)

Description

  

  Verfahren zur Herstellung eines     Azofarbstoffes.       Es     wurde    gefunden, dass man einen     Azo-          farbstoff    erhält, wenn man die     Diazoverbin-          dung    des     1-Amino-2,6-dichlor-4-nitrobenzols          mit    (2 -     Äthogy-    5     -methyl    - 2'-     sulf        onsäure)

  -di-          phenylamin    der Formel  
EMI0001.0014     
         vereinigt.    Der neue Farbstoff     bildet    ein       dunkles    Pulver, das sich in Wasser mit gelb  brauner Farbe löst und das Wolle und Seide  aus saurem Bade in braunen Tönen färbt.  



  <I>Beispiel:</I>  207 Teile     1-Amino-2,6-dichlor-4-nitroben-          zol    werden     dianotiert        und    in die mineralsaure       Lösung    dieser     Diazoverbindung    die Lösung  des     Natriumsalzes    aus 307 Teilen     (2-Äthogy-          5-methyl-2'-sulfonsäure)-diphenylamin    einge  tragen.

   Nachdem die     Farbstoffbildung    be  endet ist,     wird        abfiltriert,    der Farbstoff in    Wasser suspendiert     und    durch Verrühren     mit     einem Alkali neutral gestellt. Der Farbstoff  wird eventuell durch Zusatz eines Salzes aus  geschieden,     abfiltriert    und getrocknet.



  Process for the preparation of an azo dye. It has been found that an azo dye is obtained if the diazo compound of 1-amino-2,6-dichloro-4-nitrobenzene is used with (2-ethogy-5-methyl-2'-sulfonic acid)

  -diphenylamine of the formula
EMI0001.0014
         united. The new dye forms a dark powder that dissolves in water with a yellow-brown color and dyes the wool and silk from acid baths in brown tones.



  <I> Example: </I> 207 parts of 1-amino-2,6-dichloro-4-nitrobenzene are dianotized and the solution of the sodium salt of 307 parts (2-ethogy-5-methyl -2'-sulfonic acid) diphenylamine entered.

   After the formation of the dye has ended, it is filtered off, the dye is suspended in water and made neutral by stirring with an alkali. The dye is possibly separated out by adding a salt, filtered off and dried.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines Azefarb- stoffes, dadurch gekennzeichnet, dass man die Diazoverbindung des 1-Amino-2,6-dichlor-4- nitrobenzols mit . PATENT CLAIM: Process for producing an aze dye, characterized in that the diazo compound of 1-amino-2,6-dichloro-4-nitrobenzene is used with. (2-Athogy-5-methyl-2'-sul- fonsäure)-diphenylamin der Formel EMI0001.0043 vereinigt. Der neue Farbstoff bildet ein dunkles Pulver, das sich in Wasser mit gelbbrauner Farbe löst und das Wolle und Seide aus sau rem Bade in braunen Tönen färbt. (2-Athogy-5-methyl-2'-sulphonic acid) -diphenylamine of the formula EMI0001.0043 united. The new dye forms a dark powder that dissolves in water with a yellow-brown color and dyes the wool and silk from acid baths in brown tones.
CH202745D 1937-03-15 1937-03-15 Process for the preparation of an azo dye. CH202745A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH202745T 1937-03-15
CH200063T 1938-11-09

Publications (1)

Publication Number Publication Date
CH202745A true CH202745A (en) 1939-01-31

Family

ID=25723418

Family Applications (1)

Application Number Title Priority Date Filing Date
CH202745D CH202745A (en) 1937-03-15 1937-03-15 Process for the preparation of an azo dye.

Country Status (1)

Country Link
CH (1) CH202745A (en)

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