CH202751A - Process for the preparation of an azo dye. - Google Patents

Process for the preparation of an azo dye.

Info

Publication number
CH202751A
CH202751A CH202751DA CH202751A CH 202751 A CH202751 A CH 202751A CH 202751D A CH202751D A CH 202751DA CH 202751 A CH202751 A CH 202751A
Authority
CH
Switzerland
Prior art keywords
azo dye
preparation
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 CH202751A publication Critical patent/CH202751A/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-4-nitrobenzol-2-benzylsul-          fons    mit     (2-Äthogy-5-methyl-2'-sulfonsäure-          6'    -     chlor    -     4'-        chloracetylanüno)

      -     diphenylamin     der     Formel     
EMI0001.0017     
         vereinigt.    Der neue     Farbstoff    bildet ein  dunkles Pulver, das sich in Wasser     mit    rot  violetter Farbe löst und das Wolle     und    Seide  aus saurem Bade     in        violetten    Tönen färbt.  



       Beispiel:     292 Teile     1-Amino-4-nitrobenzol-2=benzyl-          sulfon    werden     diazotiert    und     in    die     mineral-          saure    Lösung dieser     Diazoverbindung    die  Lösung des     Natriumsalzes    aus     4$ä    Teilen       (2-Athogy-5-methyl        -2'-sulfonsäure-6'-        chlor-          ('    -     chloracetylamino)    -     diphenylamin    eingetra  gen.

   Nachdem die     Farbstoffbildung    beendet  ist, wird     abfiltriert,    der Farbstoff in Wasser    suspendiert und durch Verrühren mit einem       Alkali    neutral gestellt. Der Farbstoff wird       eventuell    durch Zusatz eines Salzes ausge  schieden,     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-4-nitrobenzene-2-benzylsulfone is used with (2-ethogy-5-methyl-2'-sulfonic acid-6 '- chlorine - 4'- chloroacetylanüno)

      - diphenylamine of the formula
EMI0001.0017
         united. The new dye forms a dark powder that dissolves in water with a red-purple color and dyes the wool and silk from acid baths in purple tones.



       Example: 292 parts of 1-amino-4-nitrobenzene-2-benzylsulfone are diazotized and the solution of the sodium salt of 4 parts (2-Athogy-5-methyl-2'-sulfonic acid) is added to the mineral acid solution of this diazo compound -6'- chloro- ('- chloracetylamino) - diphenylamine entered.

   After the formation of the dye has ended, it is filtered off, the dye is suspended in water and neutralized 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 Azofarb- stoffes, dadurch gekennzeichnet, dass man die Diazoverbindung des 1-Amino-4-nitrobenzol- 2-benzylsulfons mit (2-Äthogy-5-metIlyl-2'- sulfonsäure-6'- chlor-4'- chloracetylamino)-di- phenylamin der Formel EMI0001.0057 vereinigt. Der neue Farbstoff bildet ein dunkles Pulver, PATENT CLAIM: A process for the production of an azo dye, characterized in that the diazo compound of 1-amino-4-nitrobenzene-2-benzylsulphone is mixed with (2-ethy-5-methyl-2'-sulphonic acid-6'-chloro-4 '- chloroacetylamino) diphenylamine of the formula EMI0001.0057 united. The new dye forms a dark powder, das sieh in Wasser mit rotvioletter Farbe löst und das Wolle und Seide aus sau rem Bade in violetten Tönen färbt. it dissolves in water with a red-violet color and dyes the wool and silk from acid baths in violet tones.
CH202751D 1937-03-15 1937-03-15 Process for the preparation of an azo dye. CH202751A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH202751T 1937-03-15
CH200063T 1938-11-09

Publications (1)

Publication Number Publication Date
CH202751A true CH202751A (en) 1939-01-31

Family

ID=25723424

Family Applications (1)

Application Number Title Priority Date Filing Date
CH202751D CH202751A (en) 1937-03-15 1937-03-15 Process for the preparation of an azo dye.

Country Status (1)

Country Link
CH (1) CH202751A (en)

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