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CH263504A - Process for the preparation of an azo dye. - Google Patents

Process for the preparation of an azo dye.

Info

Publication number
CH263504A
CH263504A CH263504DA CH263504A CH 263504 A CH263504 A CH 263504A CH 263504D A CH263504D A CH 263504DA CH 263504 A CH263504 A CH 263504A
Authority
CH
Switzerland
Prior art keywords
dye
azo dye
dissolves
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 CH263504A publication Critical patent/CH263504A/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-Chlor-2-amino-l-phenol-6-          sulfonsäure    mit     Glycerin-mono-(6-oxy-2-naph-          thyl)-äther    kuppelt.  



  Der neue Farbstoff stellt ein violett  schwarzes Pulver dar, das sich in Wasser und  verdünnter     Sodalösung    mit blauer, in kon  zentrierter Schwefelsäure mit     violettroter     Farbe löst. Der Farbstoff färbt Wolle aus  saurem Bade in bordeauxroten Tönen, die  durch     Nachchromieren    in ein sehr gut walk  und     lichtechtes    Grau übergeführt werden.  



  Die Kupplung erfolgt     zweckmässig    in al  kalischem, z. B.     Alkalihydroxy    d und gegebe  nenfalls     Alkaliearbonat    enthaltendem Medium.         Beispiel:     22,4 Teile     4-Chlor-2-amino-l-phenol-6-sul-          fonsäure    werden in bekannter Weise diazo-         tiert    und in alkalischer Lösung mit 24 Teilen       Clycerin-mono-(6-oxy-2-naphthyl)-äther    ge  kuppelt. Nach beendeter Kupplung wird der  abgeschiedene Farbstoff     abfiltriert    und ge  trocknet.



  Process for the preparation of an azo dye. It has been found that a valuable azo dye can be produced if diazotized 4-chloro-2-amino-1-phenol-6-sulfonic acid 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-red color. The dye dyes wool from an acid bath in burgundy-red tones, which are converted into a very good milled and lightfast gray by subsequent chrome plating.



  The coupling is expedient in al kalischem, z. B. Alkalihydroxy d and optionally alkali carbonate-containing medium. Example: 22.4 parts of 4-chloro-2-amino-1-phenol-6-sulphonic acid are diazotized in a known manner and in an alkaline solution with 24 parts of glycerol-mono- (6-oxy-2-naphthyl) -ether coupled. After the coupling has ended, the deposited dye is filtered off and dried.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines Azofarb- stoffes, dadurch gekennzeichnet, dass man di- azotierte 4-Chlor-2-amino-l-phenol-6-sulfon- sä.ure mit. Glycerin-mono-(6-oxy-2-naphthyl)- ä,ther kuppelt. Der neue Farbstoff stellt ein violett schwarzes Pulver dar, das sich in Wasser und verdünnter Sodalösung mit. blauer, in konzentrierter Schwefelsäure mit violettroter Farbe löst. PATENT CLAIM: Process for the production of an azo dye, characterized in that diazotized 4-chloro-2-amino-1-phenol-6-sulfonic acid is used with. Glycerin-mono- (6-oxy-2-naphthyl) - ether coupling. The new dye is a purple black powder that dissolves in water and dilute soda solution. blue, dissolves in concentrated sulfuric acid with purple-red color. Der Farbstoff färbt Wolle aus saurem Bade in bordeauxroten Tönen, die durch Nachchromieren in ein sehr gut walk und lichtechtes Grau übergeführt werden. The dye dyes wool from an acid bath in burgundy-red tones, which are converted into a very good milled and lightfast gray by subsequent chrome plating.
CH263504D 1942-12-22 1942-12-22 Process for the preparation of an azo dye. CH263504A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH263504T 1942-12-22
CH257111T 1943-11-04

Publications (1)

Publication Number Publication Date
CH263504A true CH263504A (en) 1949-08-31

Family

ID=25730043

Family Applications (1)

Application Number Title Priority Date Filing Date
CH263504D CH263504A (en) 1942-12-22 1942-12-22 Process for the preparation of an azo dye.

Country Status (1)

Country Link
CH (1) CH263504A (en)

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