CH263502A - Process for the preparation of an azo dye. - Google Patents

Process for the preparation of an azo dye.

Info

Publication number
CH263502A
CH263502A CH263502DA CH263502A CH 263502 A CH263502 A CH 263502A CH 263502D A CH263502D A CH 263502DA CH 263502 A CH263502 A CH 263502A
Authority
CH
Switzerland
Prior art keywords
dye
azo dye
acid
preparation
purple
Prior art date
Application number
Other languages
German (de)
Inventor
Aktiengesellschaft Ciba
Original Assignee
Ciba Geigy
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 Ciba Geigy filed Critical Ciba Geigy
Publication of CH263502A publication Critical patent/CH263502A/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)

Description

  

  Verfahren zur Herstellung eines     Azofarbstoffes.       Es wurde gefunden,     dass    ein wertvoller       Azofarbstoff    hergestellt werden kann, wenn  man     diazotierte        4-Nitro-2-amino-l-phenol-6-          sulionsäure    mit     Glycerin-mono-(6-oxy-2-naph-          thyl)        -äther    kuppelt.  



  Der neue Farbstoff stellt ein     schwärz-          liebes    Pulver dar, das sich in Wasser und  verdünnter     Sodalösung    mit     violettbra-Liner,    in  konzentrierter Schwefelsäure mit     violettroter     Farbe löst. Der Farbstoff färbt Wolle aus  saurem Bade in     violettbraunen    Tönen, die  durch     Nachehromieren    in ein echtes Olivgrün  übergeführt werden.  



  Die Kupplung erfolgt zweckmässig in     al-          kalisehem,    z. B.     Alkalih-,#,droxyd    und gegebe  nenfalls     Alkaliearbonat    enthaltendem Medium.    <I>Beispiel:</I>  23,4 Teile     4-Nitro-2-amino-l-phenol-6-sul-          fonsäure    werden in bekannter Weise diazo-         tiert    und in alkalischer Lösung     mit    24 Teilen       Glyeerin-mono-(6-oxy-2-naphthyl)-äther    ge  kuppelt. Nach beendeter Kupplung wird der  Farbstoff durch     Kochsalzzugabe    abgeschie  den,     abfiltriert    und getrocknet.



  Process for the preparation of an azo dye. It has been found that a valuable azo dye can be produced if diazotized 4-nitro-2-amino-1-phenol-6-sulionic acid is coupled with glycerol mono- (6-oxy-2-naphthyl) ether.



  The new dye is a black powder that dissolves in water and dilute soda solution with violet-brown liner, in concentrated sulfuric acid with a violet-red color. The dye dyes wool from an acid bath in violet-brown tones, which are transformed into a real olive green by remodeling.



  The coupling is expediently carried out in alkalisehem, e.g. B. Alkalih -, #, droxyd and optionally alkali carbonate containing medium. <I> Example: </I> 23.4 parts of 4-nitro-2-amino-1-phenol-6-sulphonic acid are diazotized in a known manner and in alkaline solution with 24 parts of glyeerin-mono- (6 -oxy-2-naphthyl) ether coupled. After coupling is complete, the dye is deposited by adding sodium chloride, filtered off and dried.

Claims (1)

<B>PATENTANSPRUCH:</B> Verfahren zur Herstellung eines Azofarb- stoffes, dadurch gekennzeichnet, dass man di- azotierte 4<B>-</B> Nitro-2-aniino-l-phenol-6-sulion- säure mit Glyeerin-mono-(6-oxy-2-naphthyl)- äther kuppelt. <B> PATENT CLAIM: </B> Process for the production of an azo dye, characterized in that diazotized 4 <B> - </B> nitro-2-aniino-1-phenol-6-sulionic acid is mixed with Glyeerin-mono- (6-oxy-2-naphthyl) - ether couples. Der neue Farbstoff stellt ein schwärz- liebes Pulver dar, das sieh in Wasser und verdünnter Sodalösung mit violettbra-uner, in konzentrierter Schwefelsäure mit violettroter Farbe löst. Der Farbstoff färbt Wolle aus saurem Bade in violettbraunen Tönen, die durch Naehehromieren in ein echtes Olivgrün übergeführt werden. The new dye is a black-loving powder that dissolves in water and dilute soda solution with purple-brown, in concentrated sulfuric acid with purple-red color. The dye dyes wool from an acid bath in violet-brown tones, which are transformed into a real olive green through close-fitting.
CH263502D 1942-12-22 1942-12-22 Process for the preparation of an azo dye. CH263502A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH263502T 1942-12-22
CH257111T 1943-11-04

Publications (1)

Publication Number Publication Date
CH263502A true CH263502A (en) 1949-08-31

Family

ID=25730041

Family Applications (1)

Application Number Title Priority Date Filing Date
CH263502D CH263502A (en) 1942-12-22 1942-12-22 Process for the preparation of an azo dye.

Country Status (1)

Country Link
CH (1) CH263502A (en)

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