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CH205824A - Process for the preparation of a monoazo dye. - Google Patents

Process for the preparation of a monoazo dye.

Info

Publication number
CH205824A
CH205824A CH205824DA CH205824A CH 205824 A CH205824 A CH 205824A CH 205824D A CH205824D A CH 205824DA CH 205824 A CH205824 A CH 205824A
Authority
CH
Switzerland
Prior art keywords
preparation
dye
dark
monoazo dye
sulphonic acid
Prior art date
Application number
Other languages
German (de)
Inventor
Aktiengesellsc Farbenindustrie
Original Assignee
Ig Farbenindustrie Ag
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 Ig Farbenindustrie Ag filed Critical Ig Farbenindustrie Ag
Publication of CH205824A publication Critical patent/CH205824A/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
    • C09B45/00—Complex metal compounds of azo dyes
    • C09B45/02—Preparation from dyes containing in o-position a hydroxy group and in o'-position hydroxy, alkoxy, carboxyl, amino or keto groups
    • C09B45/14—Monoazo compounds
    • C09B45/16—Monoazo compounds containing chromium

Landscapes

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

Description

  

  Verfahren zur Herstellung eines     iionoazofarbstoffes.       Vorliegendes Patent bezieht ,sich auf ein  Verfahren zur     Herstellung    eines     M.onoazo-          farbstoffes,    dadurch gekennzeichnet,     dass    man       diazotierte    4 -     Nitro-    2     -aminophenol-    6     -sulfon-          säure    in     sodaalkalischer    Lösung     mit        1-Ace-          tylamino-3-oxynaphthalin-6-sulfonsäure    kup  pelt.  



  Der so erhaltene Farbstoff     ist    ein dunkles  Pulver und färbt Wolle aus saurem Bade in  dunkelvioletten Tönen. Beim     Chromieren    er  hält man dunkelbraune Färbungen von sehr  guter Walk-,     Patting-    und Lichtechtheit.  



  <I>Beispiel:</I>  Eine aus 23,4 Teilen     4-Nitro-2-aminophe-          nol    - 6, -     sulfonsäure        hergestellte        Diazolösung     lässt man in eine überschüssiges     Natriumcar-          bonat    enthaltende Lösung von 2-9 Teilen       1-Aeetylamino-3-oxynaphthalin-6-sulf        ansäure       laufen. Nach     beendeter        Kuppelung    wird .der  gebildete     Farbstoff    abgeschieden und ge  trocknet.



  Process for the preparation of an ionoazo dye. The present patent relates to a process for the preparation of a M.onoazo dye, characterized in that diazotized 4-nitro-2-aminophenol-6-sulfonic acid in a soda-alkaline solution with 1-acetylamino-3-oxynaphthalene 6-sulfonic acid coupling.



  The dye thus obtained is a dark powder and dyes wool from an acid bath in dark purple tones. When chrome-plating, one obtains dark brown colorations with very good fulling, patting and lightfastness.



  <I> Example: </I> A diazo solution prepared from 23.4 parts of 4-nitro-2-aminophenol - 6, - sulfonic acid is allowed to add 2-9 parts of 1-ethylamino- containing excess sodium carbonate to a solution. 3-oxynaphthalene-6-sulfanic acid run. After the coupling is complete, the dye formed is deposited and dried.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines Mono azofarbstoffes, dadurch gekennzeichnet, -.dass man diazotierte 4-Nitro-2-aminophenol-6-sul- fonsäure in s@odaalkalischer Lösung mit 1-Acetylamino-3-oxyuaphthalin-6-sulfonsäure kuppelt. Der so erhaltene Farbstoff ist ein dunkles Pulver und färbt Wolle aus saurem Bade in dunkelvioletten Tönen. PATENT CLAIM: Process for the production of a mono azo dye, characterized in that diazotized 4-nitro-2-aminophenol-6-sulphonic acid is coupled in sodium-alkaline solution with 1-acetylamino-3-oxyuaphthalene-6-sulphonic acid. The dye thus obtained is a dark powder and dyes wool from an acid bath in dark purple tones. Beim Chromieren er hält man dunkelbraune Färbungen von .sehr guter Walk-, Patting- und Lichtechtheit. When chrome-plating, one obtains dark-brown colorations with very good mill, patting and lightfastness.
CH205824D 1937-01-25 1938-01-19 Process for the preparation of a monoazo dye. CH205824A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE205824X 1937-01-25
CH203140T 1938-01-19

Publications (1)

Publication Number Publication Date
CH205824A true CH205824A (en) 1939-06-30

Family

ID=25723895

Family Applications (1)

Application Number Title Priority Date Filing Date
CH205824D CH205824A (en) 1937-01-25 1938-01-19 Process for the preparation of a monoazo dye.

Country Status (1)

Country Link
CH (1) CH205824A (en)

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