CH263501A - Process for the preparation of an azo dye. - Google Patents

Process for the preparation of an azo dye.

Info

Publication number
CH263501A
CH263501A CH263501DA CH263501A CH 263501 A CH263501 A CH 263501A CH 263501D A CH263501D A CH 263501DA CH 263501 A CH263501 A CH 263501A
Authority
CH
Switzerland
Prior art keywords
dye
azo dye
blue
purple
preparation
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 CH263501A publication Critical patent/CH263501A/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)
  • Coloring (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     diazotiertes        6-Nitro-4-chlor-2-amino-l-          phenol    mit     Glycerin-mono-        (6-oxy-2-naphthyl)-          äther    kuppelt.  



  Der neue Farbstoff stellt ein     violett-          schwarzes    Pulver dar, das sich in Wasser       und    verdünnter     Sodalösung    mit blauer, in  konzentrierter     Schwefelsäure    mit violetter  Farbe löst. Der Farbstoff färbt Wolle aus  saurem Bade in blauen Tönen, die durch       Nachehromieren    in ein ausgezeichnet walk-,       potting-    und lichtechtes     grünstichiges    Grau  übergeführt werden. Der Farbstoff eignet  sich     vorzüglich    zum Färben von Wolle nach  dem     Einbadehromierverfahren.     



  Die Kupplung erfolgt     zweckmässig    in al  kalischem, z. B.     Alkalihydroxyd    und     gegebe-          nenfalls        Alkalicarbonat    enthaltendem Medium.       Beispiel:     18,9 Teile     6-Nitro-4-chlor-2-amino-l-phenol     werden in     bekannter    Weise     diazotiert    und in         alkalischer    Lösung mit 24 Teilen     Glycerin-          mono-(6-oxy-2-naphthyl)-äther    gekuppelt.  Nach beendeter Kupplung wird der abgeschie  dene Farbstoff     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 6-nitro-4-chloro-2-amino-1-phenol is coupled with glycerol mono- (6-oxy-2-naphthyl) ether.



  The new dye is a purple-black powder that dissolves in water and dilute soda solution with blue, in concentrated sulfuric acid with purple color. The dye dyes wool from an acid bath in blue tones, which are converted into an excellent mill, potting and lightfast greenish gray by re-homing. The dye is particularly suitable for dyeing wool using the single-bath homing method.



  The coupling is expedient in al kalischem, z. B. alkali hydroxide and optionally alkali carbonate containing medium. Example: 18.9 parts of 6-nitro-4-chloro-2-amino-1-phenol are diazotized in a known manner and coupled in alkaline solution with 24 parts of glycerol mono- (6-oxy-2-naphthyl) ether. After the coupling has ended, the dyestuff deposited is filtered off and dried.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines Azofarb- stoffes, dadurch gekennzeichnet, dass man di- azotiertes 6-Nitro-4-chlor-2-amino-l-phenol mit Glycerin-mono- (6-oxy-2-naphthyl) -äther kup pelt. Der neue Farbstoff stellt ein violett schwarzes Pulver dar, das sich in Wasser und verdünnter Sodalösung mit blauer, in konzentrierter Schwefelsäure mit violetter Farbe löst. PATENT CLAIM: Process for the production of an azo dye, characterized in that diazotized 6-nitro-4-chloro-2-amino-1-phenol with glycerol mono- (6-oxy-2-naphthyl) ether kup pelt. The new dye is a purple-black powder that dissolves in water and dilute soda solution with blue, in concentrated sulfuric acid with purple color. Der Farbstoff färbt Wolle aus saurem Bade in blauen Tönen, die durch Nachchromieren in ein ausgezeichnet walk-, potting- und lichtechtes grünstichiges Grau übergeführt werden. Der Farbstoff eignet sich vorzüglich zum Färben von Wolle nach dem Einbadchromierverfahren. The dye dyes wool from acid baths in blue tones, which are converted into an excellent mill, potting and lightfast greenish gray by subsequent chrome plating. The dye is particularly suitable for dyeing wool using the single bath chroming process.
CH263501D 1942-12-22 1942-12-22 Process for the preparation of an azo dye. CH263501A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH263501T 1942-12-22
CH257111T 1943-11-04

Publications (1)

Publication Number Publication Date
CH263501A true CH263501A (en) 1949-08-31

Family

ID=25730040

Family Applications (1)

Application Number Title Priority Date Filing Date
CH263501D CH263501A (en) 1942-12-22 1942-12-22 Process for the preparation of an azo dye.

Country Status (1)

Country Link
CH (1) CH263501A (en)

Similar Documents

Publication Publication Date Title
CH257111A (en) Process for the preparation of an azo dye.
DE696589C (en) Process for the preparation of o-oxyazo dyes
DE519910C (en) Process for the production of chromium-containing azo dyes
DE565824C (en) Process for the production of chromium-containing azo dyes
CH263511A (en) Process for the preparation of an azo dye.
CH263499A (en) Process for the preparation of an azo dye.
CH264194A (en) Process for the production of an azo waste.
CH263507A (en) Process for the preparation of an azo dye.
CH263508A (en) Process for the preparation of an azo dye.
CH263509A (en) Process for the preparation of an azo dye.
CH263504A (en) Process for the preparation of an azo dye.
CH263500A (en) Process for the preparation of an azo dye.
CH222693A (en) Process for the preparation of a monoazo dye.
CH263498A (en) Process for the preparation of an azo dye.
CH263503A (en) Process for the preparation of an azo dye.
CH266278A (en) Process for the preparation of an o, o'-dioxyazo dye.
CH263495A (en) Process for the preparation of an azo dye.
CH193231A (en) Process for the preparation of an o-oxyazo dye.
CH266024A (en) Process for the preparation of a monoazo dye.
CH263497A (en) Process for the preparation of an azo dye.
CH263496A (en) Process for the preparation of an azo dye.
CH266026A (en) Process for the preparation of a monoazo dye.
CH266023A (en) Process for the preparation of a monoazo dye.
CH263512A (en) Process for the preparation of an azo dye.
CH222134A (en) Process for the preparation of a 1,1'-dioxyazo dye.