CH308411A - Process for the production of a cobalt-containing azo dye. - Google Patents

Process for the production of a cobalt-containing azo dye.

Info

Publication number
CH308411A
CH308411A CH308411DA CH308411A CH 308411 A CH308411 A CH 308411A CH 308411D A CH308411D A CH 308411DA CH 308411 A CH308411 A CH 308411A
Authority
CH
Switzerland
Prior art keywords
cobalt
azo dye
containing azo
production
parts
Prior art date
Application number
Other languages
German (de)
Inventor
Ag J R Geigy
Original Assignee
Ag J R 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 Ag J R Geigy filed Critical Ag J R Geigy
Publication of CH308411A publication Critical patent/CH308411A/en

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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
    • C09B45/20—Monoazo compounds containing cobalt

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Coloring (AREA)

Description

  

  Verfahren zur Herstellung eines     kobalthaltigen        Azofarbstoffes.            Gegenstand    vorliegenden Patentes ist ein  Verfahren zur Herstellung eines     kobalthalti-          gen        Azofarbstoffes.    Das Verfahren ist da  durch gekennzeichnet,

   dass man     dia.zotiertes          2-Amino-phenol-4-äthylstxlfon    mit     Acetessig-          s        iiure        i        -p-anisidicl        kuppelt        und        die        erhaltene     Verbindung mit     kobaltabgebenden    Mitteln be  handelt.  



  Der erhaltene neue,     kobalthaltige        Azo-          farbstoff    stellt ein gelbbraunes Pulver dar,  das Wolle aus neutralem oder schwach  saurem Bade in gelben Tönen von sehr     guter     Wasch-,     Walk-,    Seewasser-, Reib- und Licht  echtheit färbt.  



  <I>Beispiel.:</I>  20,1 Teile     2-Amino-phenol-4-äthyl-stilfon          @serden    in 250 Teilen heissem Wasser mit  17,5 Teilen     konz.    Salzsäure gelöst, auf 5   abgekühlt und mit einer     33proz.    Natrium  nitrit.lösung. (entsprechend 6,9 Teilen Na  triumnitrit 100      /o,)    dianotiert.

   Durch Zugabe  von     Natriumbicarbonat    stellt man neutral  und giesst die     Diazoniumverbindung    bei 0-5   in eine Lösung von 21,8 Teilen     Acetessig-          säure-p-anisidid,    11     Volumteilen        10n-Natron-          lauge    und 12 Teilen wasserfreier Soda in 800  Teilen Wasser. Nach Beendigung der     Farb-          stoffbildung    filtriert man den ausgefallenen    Farbstoff ab und wäscht ihn mit werd. Koch  salzlösung aus.

   Danach schlämmt man ihn in  800 Teilen Wasser von 80  .an, gibt 60 Teile       Iiobaltacetatlösung    (entsprechend 3,54 Teilen  Kobalt)     zu,    erhitzt während 3 Stunden auf  80 , stellt durch Zugabe von Soda alkalisch  und erhitzt noch weitere 3     Stunden    auf 80  bis 85 . Hierauf     ,gibt        man    Kochsalz zu, bis  der     kobalthaltige    Farbstoff vollständig aus  gefallen ist, filtriert ab und trocknet. Der  neue Farbstoff, ein gelbbraunes Pulver, färbt  Wolle aus neutralem oder schwach saurem  Bade in gelben Tönen von sehr guter Wasch-,       Walk-,    Seewasser-, Reib- und Lichtechtheit.



  Process for the production of a cobalt-containing azo dye. The present patent relates to a process for the production of a cobalt-containing azo dye. The procedure is characterized by

   that dia.zotierter 2-aminophenol-4-äthylstxlfon with acetoacetic acid i -p-anisidicl and the compound obtained is treated with cobalt-releasing agents.



  The new cobalt-containing azo dye obtained is a yellow-brown powder which dyes wool from a neutral or weakly acidic bath in yellow shades of very good fastness to washing, fulling, seawater, rubbing and light.



  <I> Example: </I> 20.1 parts of 2-amino-phenol-4-ethyl-stilfon @ earth in 250 parts of hot water with 17.5 parts of conc. Dissolved hydrochloric acid, cooled to 5 and with a 33 per cent. Sodium nitrite solution. (corresponding to 6.9 parts of sodium nitrite 100 / o,) dianotized.

   The mixture is made neutral by adding sodium bicarbonate and the diazonium compound is poured at 0-5 into a solution of 21.8 parts of acetoacetic acid p-anisidide, 11 parts by volume of 10N sodium hydroxide solution and 12 parts of anhydrous soda in 800 parts of water. When the dyestuff formation has ended, the dyestuff which has precipitated out is filtered off and washed with werd. Saline solution.

   Then it is slurried in 800 parts of water at 80, 60 parts of iobalt acetate solution (corresponding to 3.54 parts of cobalt) are added, heated to 80 for 3 hours, made alkaline by adding soda and heated to 80 to 85 for a further 3 hours . Then, table salt is added until the cobalt-containing dye has completely precipitated, filtered off and dried. The new dye, a yellow-brown powder, dyes wool from neutral or weakly acidic baths in yellow shades of very good fastness to washing, fulling, sea water, rubbing and light.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines kobalt- haltigenAzofarbstoffes, dadurch gekennzeich net, da.ss man diazotiertes 2-Amino-phenol-4- äthylsulfon mit Acetessigsä,ur e - p - anisidid kuppelt und die erhaltene Verbindung mit kobaltabgebenden Mitteln behandelt. PATENT CLAIM: Process for the production of a cobalt-containing azo dye, characterized in that diazotized 2-aminophenol-4-ethylsulfone is coupled with acetoacetic acid, ur e-p-anisidide and the compound obtained is treated with cobalt-releasing agents. Der erhaltene neue, kobalthaltige Azo- farbstoff stellt ein gelbbraunes Pulver dar, das Wolle aus neutralem oder schwach saurem Bade in gelben Tönen von sehr guter Wasch-, Walk-, Seewasser-, Reib- und Licht echtheit färbt. The new cobalt-containing azo dye obtained is a yellow-brown powder which dyes wool from a neutral or weakly acidic bath in yellow shades of very good fastness to washing, fulling, seawater, rubbing and light.
CH308411D 1952-01-05 1952-01-05 Process for the production of a cobalt-containing azo dye. CH308411A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH304386T 1952-01-05
CH308411T 1952-01-05

Publications (1)

Publication Number Publication Date
CH308411A true CH308411A (en) 1955-07-15

Family

ID=25734779

Family Applications (1)

Application Number Title Priority Date Filing Date
CH308411D CH308411A (en) 1952-01-05 1952-01-05 Process for the production of a cobalt-containing azo dye.

Country Status (1)

Country Link
CH (1) CH308411A (en)

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