CH263510A - Process for the preparation of an azo dye. - Google Patents

Process for the preparation of an azo dye.

Info

Publication number
CH263510A
CH263510A CH263510DA CH263510A CH 263510 A CH263510 A CH 263510A CH 263510D A CH263510D A CH 263510DA CH 263510 A CH263510 A CH 263510A
Authority
CH
Switzerland
Prior art keywords
dye
red
brown
hot
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 CH263510A publication Critical patent/CH263510A/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     diazotiertes        4-Nitro        2-amino-l-plienol    mit       Glycerin-mono-        (6-oxy-2-naplithyl)        -äther    kup  pelt.  



  Der neue Farbstoff stellt ein grünschwar  zes Pulver dar, das sich in heissem Wasser  und heisser     verdünnter        Sodalösung    mit  schmutzig     violettbrauner,    in verdünnter hei  sser Natronlauge mit rotbrauner und in kon  zentrierter Schwefelsäure mit     violettroter     Farbe löst. Der Farbstoff färbt Wolle aus  schwach saurem Bade in blaustichig bor  deauxroten Tönen, die durch     Nachchroinieren     in ein echtes Oliv übergeführt werden. Der  Farbstoff eignet sich vorzüglich zum Färben  von Wolle nach dem     Einbadehromierverfah-          ren.     



  Die Kupplung erfolgt zweckmässig in al  kalischem, z. B.     Alkalihydroxyd    und gegebe  nenfalls     Alkalicarbonat    enthaltendem Medium.    <I>Beispiel:</I>  15,4 Teile     4-Nitro-2-amino-l-phenol    werden  in bekannter Weise dianotiert und in alkali-         schem    Medium mit 24 Teilen     Gly        cerin-mono-          (6-oxy-2-naphthyl)-äther    gekuppelt. Nach be  endeter Kupplung wird der abgeschiedene  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 4-nitro-2-amino-1-plienol is coupled with glycerol mono- (6-oxy-2-naplithyl) ether.



  The new dye is a greenish-black powder that dissolves in hot water and hot dilute soda solution with dirty violet-brown, in dilute hot sodium hydroxide solution with red-brown and in concentrated sulfuric acid with purple-red color. The dye dyes wool from a weakly acidic bath in blue tinged, bor deaux red tones, which are converted into a real olive by postchroining. The dye is ideally suited for dyeing wool using the Einbadehromierverfah- ren.



  The coupling is expedient in al kalischem, z. B. alkali hydroxide and optionally alkali carbonate-containing medium. <I> Example: </I> 15.4 parts of 4-nitro-2-amino-1-phenol are dianotized in a known manner and mixed with 24 parts of glycerin-mono- (6-oxy-2- naphthyl) ether coupled. After 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 anotiertes 4-Nitro-2-amino-l-phenol mit Gly- cerin-mono-(6-oxy-2-naphthyl)-äther kuppelt. Der neue Farbstoff stellt ein grünschwar zes Pulver dar, das sich in heissem Wasser und heisser verdünnter Sodalösung mit schmutzig v iolettbrauner, in verdünnter heisser Na tronlauge mit rotbrauner und in konzentrier ter Schwefelsäure mit violettroter Farbe löst. PATENT CLAIM: Process for the production of an azo dye, characterized in that the anotated 4-nitro-2-amino-1-phenol is coupled with glycerin mono- (6-oxy-2-naphthyl) ether. The new dye is a greenish-black powder that dissolves in hot water and hot dilute soda solution with dirty purple-brown, in dilute hot sodium hydroxide solution with red-brown and in concentrated sulfuric acid with purple-red color. Der Farbstoff färbt Wolle aus schwach sau rem Bade in blaustichig bordeauxroten Tö nen, die durch Nachchromieren in ein echtes Oliv übergeführt werden. Der Farbstoff eig net sich vorzüglich zum Färben von Wolle nach dem Einbadehromierverfahren. The dye dyes wool from weakly acidic baths in a bluish tinge of burgundy red, which is converted into a real olive by subsequent chrome plating. The dye is ideally suited for dyeing wool using the Einbadehromierverfahren.
CH263510D 1942-12-22 1942-12-22 Process for the preparation of an azo dye. CH263510A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH263510T 1942-12-22
CH257111T 1943-11-04

Publications (1)

Publication Number Publication Date
CH263510A true CH263510A (en) 1949-08-31

Family

ID=25730049

Family Applications (1)

Application Number Title Priority Date Filing Date
CH263510D CH263510A (en) 1942-12-22 1942-12-22 Process for the preparation of an azo dye.

Country Status (1)

Country Link
CH (1) CH263510A (en)

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