CH209081A - Process for the preparation of an azo dye. - Google Patents

Process for the preparation of an azo dye.

Info

Publication number
CH209081A
CH209081A CH209081DA CH209081A CH 209081 A CH209081 A CH 209081A CH 209081D A CH209081D A CH 209081DA CH 209081 A CH209081 A CH 209081A
Authority
CH
Switzerland
Prior art keywords
azo dye
preparation
dye
red
acetamino
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 CH209081A publication Critical patent/CH209081A/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-Amirio-2,6-dichlor-4-nitrobenzols     mit     4-Acetamino-3'-clilordiphenylamin-2-sul-          fonsäure    der Formel  
EMI0001.0009     
    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 rotbraunen Tönen färbt.  



  <I>Beispiel:</I>  207 Teile     1-Amino-2,6-dichlor-4-nitro-          benzol    werden dianotiert und in die mineral  saure Lösung dieser     Diazoverbindung    die  Lösung des     Natriumsalzes    aus 340,5 Teilen       4-Acetamino-3'-chloi-diphenylamin-2-sulfon-          säure    eingetragen. Nachdem die Farbstoff  bildung 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 ausgeschieden,     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-amirio-2,6-dichloro-4-nitrobenzene is used with 4-acetamino-3'-clilordiphenylamine-2-sulphonic acid of the formula
EMI0001.0009
    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.



  <I> Example: </I> 207 parts of 1-amino-2,6-dichloro-4-nitrobenzene are dianotized and the solution of the sodium salt of 340.5 parts of 4-acetamino-3 is added to the mineral acidic solution of this diazo compound '-chloi-diphenylamine-2-sulfonic acid 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 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 4-Acetamino-3'-chlordi- phenylamin-2-sulfonsäure der Förmel EMI0001.0026 verei n i gt. Der neue Farbstoff bildet ein dunkles Pulver, das sich in Wasser mit roter Farbe löst und das Wolle und Seide aus saurem Bade in rotbraunen Tönen färbt. 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 4-acetamino-3'-chlorodiphenylamine-2-sulfonic acid of the formula EMI0001.0026 not 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.
CH209081D 1938-11-09 1938-11-09 Process for the preparation of an azo dye. CH209081A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH200063T 1938-11-09
CH209081T 1938-11-09

Publications (1)

Publication Number Publication Date
CH209081A true CH209081A (en) 1940-03-15

Family

ID=25723425

Family Applications (1)

Application Number Title Priority Date Filing Date
CH209081D CH209081A (en) 1938-11-09 1938-11-09 Process for the preparation of an azo dye.

Country Status (1)

Country Link
CH (1) CH209081A (en)

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