CH202743A - Process for the preparation of an azo dye. - Google Patents

Process for the preparation of an azo dye.

Info

Publication number
CH202743A
CH202743A CH202743DA CH202743A CH 202743 A CH202743 A CH 202743A CH 202743D A CH202743D A CH 202743DA CH 202743 A CH202743 A CH 202743A
Authority
CH
Switzerland
Prior art keywords
azo dye
preparation
dye
ethogy
chlorobenzoylamino
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 CH202743A publication Critical patent/CH202743A/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-nitrobenzols     mit     (2-Äthogy-    5     -methyl    -2'-     sulf        onsäure-4'-o-          chlorbenzoylamino)-diphenylamin    der Formel  
EMI0001.0012     
    vereinigt.

   Der neue Farbstoff bildet ein  dunkles Pulver,     das,    sich in Wasser mit roter  Farbe löst und das Wolle und Seide aus sau  rem Bade in     rotbraunen    Tönen färbt.  



       Beispiel:     207 Teile     1-Amino-2,6-dichlor-4-nitroben-          zol    werden     diazotiert    und in die mineralsaure  Lösung dieser     Diazoverbindung    die Lösung  des     Natriumsalzes    aus 460 Teilen     (2-Äthogy-          5    -     methyl    - 2' -     sulfonsäure-    4'- o -     chlorbenzoyl-          amino)-diphenylamin        eingetragen.    Nachdem  die     Farbstoffbildung    beendet ist,

   wird     abfil-          triert,    der Farbstoff in Wasser suspendiert    und durch     Verrühren    mit einem Alkali neu  tral 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 used with (2-ethogy-5-methyl-2'-sulfonic acid-4 ' -o- chlorobenzoylamino) diphenylamine of the formula
EMI0001.0012
    united.

   The new dye forms a dark powder that dissolves in water with a red color and dyes the wool and silk from acid baths in red-brown tones.



       Example: 207 parts of 1-amino-2,6-dichloro-4-nitrobenzene are diazotized and in the mineral acid solution of this diazo compound the solution of the sodium salt of 460 parts (2-ethogy-5-methyl-2'-sulfonic acid-4 '- o - chlorobenzoylamino) diphenylamine entered. After the dye formation is over,

   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-Amino-2,6-dichlor-4- nitrobenzols mit (2-Äthogy-5-methyl-2'-sul- f onsäure - 4'- o - chlorbenzoylamino) PATENT CLAIM: Process for the production of an azo dye, characterized in that the diazo compound of 1-amino-2,6-dichloro-4-nitrobenzene is mixed with (2-ethogy-5-methyl-2'-sulphonic acid - 4 '- o - chlorobenzoylamino) - diphenyl- amin der Formel EMI0001.0050 vereinigt. Der neue Farbstoff bildet ein dunkles Pulver, das sich in Wasser mit roter Farbe löst und das Wolle und Seide aus saurem Bade in rostbraunen Tönen färbt. - diphenylamine of the formula EMI0001.0050 united. The new dye forms a dark powder that dissolves in water with a red color and dyes the wool and silk from acid baths in rusty brown tones.
CH202743D 1937-03-15 1937-03-15 Process for the preparation of an azo dye. CH202743A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH202743T 1937-03-15
CH200063T 1938-11-09

Publications (1)

Publication Number Publication Date
CH202743A true CH202743A (en) 1939-01-31

Family

ID=25723416

Family Applications (1)

Application Number Title Priority Date Filing Date
CH202743D CH202743A (en) 1937-03-15 1937-03-15 Process for the preparation of an azo dye.

Country Status (1)

Country Link
CH (1) CH202743A (en)

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