CH202748A - Process for the preparation of an azo dye. - Google Patents

Process for the preparation of an azo dye.

Info

Publication number
CH202748A
CH202748A CH202748DA CH202748A CH 202748 A CH202748 A CH 202748A CH 202748D A CH202748D A CH 202748DA CH 202748 A CH202748 A CH 202748A
Authority
CH
Switzerland
Prior art keywords
azo dye
preparation
dye
red
acid
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 CH202748A publication Critical patent/CH202748A/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)
  • Coloring (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (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     -nitrobenzol     i     mit    (2     -Äthoxy    - 5 -     methyl    - 2'-     sulf        ansäure    -     6'-          ichlor-4'-chloracetylamino)

  -diphenylamin    der  Formel  
EMI0001.0019     
    !vereinigt. Der neue Farbstoff bildet     ein          ;dunkles    Pulver, das sich in Wasser mit gelb  roter Farbe löst und das Wolle und Seide aus  saurem Bade     in    rotbraunen Tönen färbt.  



  <I>Beispiel:</I>       r     207 Teile     1-Amino-2,6-dichlor-4-nitroben-          zo1    werden     diazotiert    und in die mineralsaure       ;Lösung    dieser     @        Diazoverbindung    die Lösung  ;

  des     Natriumsalzes    aus 463     Teilen        (2-Äthoxy-          \5-methyl-        2'-sulf    ansäure-     6'-chlor    - 4'-     chlorace-          tylamino)-diphenylamin    eingetragen.

       Nach-          .dem    die     Farbstoffbildung    beendet ist,     wird          äbfiltriert,    der Farbstoff     in    Wasser suspen-         diert    und durch Verrühren mit einem     Alkali          neutral    gestellt. Der Farbstoff wird eventuell  durch Zusatz     eines    Salzes ausgeschieden,     ab-          filtriert    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 mixed with (2-ethoxy-5-methyl-2'-sulfanic acid-6 '- ichlor-4'-chloroacetylamino)

  -diphenylamine of the formula
EMI0001.0019
    !united. The new dye forms a; dark powder that dissolves in water with a yellow-red color and dyes the wool and silk from acid baths in red-brown shades.



  <I> Example: </I> r 207 parts of 1-amino-2,6-dichloro-4-nitrobenzo1 are diazotized and the solution is converted into the mineral acid; solution of this diazo compound;

  of the sodium salt from 463 parts (2-ethoxy- \ 5-methyl-2'-sulfanic acid-6'-chloro-4'-chloroacetylamino) -diphenylamine entered.

       After the dye formation has ended, it is filtered off, the dye is suspended in water and neutralized by stirring with an alkali. The dye is possibly precipitated by adding a salt, filtered off and dried.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines Azofarb- stoffes, dadurch gekennzeichnet, dass man die Diazoverbindung des 1-Ami_no-2,6-dichlor-4- nitrobenzols mit (2 -Äthoxy- 5 -methyl- 2'-sul- f onsäure-6'-chlor- 4'- chlor acetylamino) Claim: Process for the production of an azo dye, characterized in that the diazo compound of 1-Ami_no-2,6-dichloro-4-nitrobenzene is mixed with (2-ethoxy-5-methyl-2'-sulphonic acid-6 '-chlor- 4'- chloroacetylamino) - diphe- nylamin der Formel EMI0001.0068 vereinigt. Der neue Farbstoff bildet ein ' dunkles Pulver, das sich in Wasser mit gelbroter Farbe löst und das Wolle und Seide aus sau rem Bade in rotbraunen Tönen färbt. - diphenylamine of the formula EMI0001.0068 united. The new dye forms a dark powder that dissolves in water with a yellow-red color and dyes the wool and silk from acid baths in red-brown tones.
CH202748D 1937-03-15 1937-03-15 Process for the preparation of an azo dye. CH202748A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH202748T 1937-03-15
CH200063T 1938-11-09

Publications (1)

Publication Number Publication Date
CH202748A true CH202748A (en) 1939-01-31

Family

ID=25723421

Family Applications (1)

Application Number Title Priority Date Filing Date
CH202748D CH202748A (en) 1937-03-15 1937-03-15 Process for the preparation of an azo dye.

Country Status (1)

Country Link
CH (1) CH202748A (en)

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