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CH203616A - Process for the preparation of an azo dye. - Google Patents

Process for the preparation of an azo dye.

Info

Publication number
CH203616A
CH203616A CH203616DA CH203616A CH 203616 A CH203616 A CH 203616A CH 203616D A CH203616D A CH 203616DA CH 203616 A CH203616 A CH 203616A
Authority
CH
Switzerland
Prior art keywords
azo dye
preparation
brown
dye
succinylamino
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 CH203616A publication Critical patent/CH203616A/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
    • C09B29/24—Monoazo dyes prepared by diazotising and coupling from coupling components containing both hydroxyl and amino directing groups
    • C09B29/28—Amino naphthols
    • C09B29/30—Amino naphtholsulfonic acid
    • 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
    • C09B29/10—Monoazo dyes prepared by diazotising and coupling from coupling components containing hydroxy as the only directing group
    • C09B29/12—Monoazo dyes prepared by diazotising and coupling from coupling components containing hydroxy as the only directing group of the benzene series
    • 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)

Description

  

      Verfahren    zur Herstellung eines     Azofarbstoffes.       Vorliegendes Patent bezieht sich auf ein  Verfahren zur Herstellung eines     Azofarb-          stoffes,    dadurch gekennzeichnet, dass man       diazotierte        4-Nitro-2-aminophenol-6-sulfon-          säure    mit     2-Succinylamino-7-naphthol    kup  pelt.  



  Der so erhaltene Farbstoff bildet ein  leicht wasserlösliches, schwarzbraunes Pul  ver und färbt Wolle in rotbraunen Tönen, die  beim     Nachchromieren    in ein     walkechtes    Dun  kelbraun übergehen.    <I>Beispiel:</I>    23,4 Teile     4-Nitro    - 2 -     aminophenol-6-sul-          fonsäure    werden in üblicher Weise     diazotiert.     Die erhaltene     Diazolösung    lässt man in eine  überschüssiges     Natriumcarbonat    enthaltende  Lösung von 26 Teilen 2-Succinylamino-7-         naphthol    einlaufen. Nach mehrstündigem  Rühren wird der Farbstoff abgeschieden und  getrocknet.



      Process for the preparation of an azo dye. The present patent relates to a process for the production of an azo dye, characterized in that diazotized 4-nitro-2-aminophenol-6-sulfonic acid is coupled with 2-succinylamino-7-naphthol.



  The dye obtained in this way forms a slightly water-soluble, black-brown powder and dyes wool in red-brown shades, which change to a mill-proof dark brown when re-chrome-plated. <I> Example: </I> 23.4 parts of 4-nitro-2-aminophenol-6-sulphonic acid are diazotized in the usual way. The diazo solution obtained is allowed to run into a solution of 26 parts of 2-succinylamino-7-naphthol containing excess sodium carbonate. After several hours of stirring, the dye is deposited and dried.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines Azofarb- stoffes, dadurch gekennzeichnet, dass man diazotierte 4-Nitro-2-aminophenol-6-sulfon- säure mit 2-Succinylamino-7-naphthol kup pelt. Der so erhaltene Farbstoff bildet ein leicht wasserlösliches, schwarzbraunes Pulver und färbt Wolle in rotbraunen Tönen, die beim Nachchromieren in ein walkechtes Dun kelbraun übergehen. PATENT CLAIM: Process for the production of an azo dye, characterized in that diazotized 4-nitro-2-aminophenol-6-sulfonic acid is coupled with 2-succinylamino-7-naphthol. The dye obtained in this way forms a slightly water-soluble, black-brown powder and dyes wool in red-brown shades, which change to a mill-proof dark brown when re-chrome-plated.
CH203616D 1936-11-26 1937-11-22 Process for the preparation of an azo dye. CH203616A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE203616X 1936-11-26
CH201000T 1938-11-15

Publications (1)

Publication Number Publication Date
CH203616A true CH203616A (en) 1939-03-15

Family

ID=25723639

Family Applications (1)

Application Number Title Priority Date Filing Date
CH203616D CH203616A (en) 1936-11-26 1937-11-22 Process for the preparation of an azo dye.

Country Status (1)

Country Link
CH (1) CH203616A (en)

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