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CH308409A - 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
CH308409A
CH308409A CH308409DA CH308409A CH 308409 A CH308409 A CH 308409A CH 308409D A CH308409D A CH 308409DA CH 308409 A CH308409 A CH 308409A
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 CH308409A publication Critical patent/CH308409A/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
    • C09B45/20—Monoazo compounds containing cobalt

Landscapes

  • 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-          rien        Azofarbstoffes.    Das Verfahren ist     da-          dureh    gekennzeichnet, dass man     dia:zotiertes          2-Ainino-phenol-4-äthylsulfon    mit     Acetessig-          ,äure-p-ehloi=anilidkuppelt    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        'rieh-,        Walk-,    Seewasser-, Reib- und     Lieht-          eclitheit    färbt.  



  <I>Beispiel:</I>  20,1 Teile     2-Amino-phenol-4-äthyl-sulfon     werden in 250 Teilen heissem Wasser mit  17,5 Teilen     konz.    Salzsäure gelöst, auf 5        ahgekühlt    und mit einer     33proz.        Natrium-          nitritlösung,    (entsprechend 6,9 Teilen Na  <B>1</B>     riumnitrit    100     1/o)        diazotiert.    Durch Zugabe  von     Natriumbicarbonat    stellt man neutral       Lind    giesst.

   die     Diazoniumverbindung    bei 0-5   in eine Lösung von 22,2 Teilen     Acetessig-          säure-p-chlor-anilid,    11     Volumteilen        10n-Na-          tronlauge    und 12 Teilen wasserfreier Soda in  800 Teilen Wasser. Nach     Beendigung    der       Farbstoffhildung        filtriert    man den ausgefal  lenen Farbstoff ab und wäscht ihn mit werd.

           Koehsalzlösung    aus.     Danach    schlämmt man  ihn in 800 Teilen Wasser von 80  an, gibt  60 Teile     Kobaltacetatlösung    (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 80-85 . Hierauf gibt man  Kochsalz zu, bis der     kobalthaltige    Farbstoff  vollständig ausgefallen ist,     filtriert    ab und  trocknet.

   Der neue Farbstoff, ein gelbbrau  nes Pulver, färbt Wolle aus neutralem oder  sehwach saurem Bade in gelben Tönen von  sehr -Liter     Wasch-,        Walk-,    Seewasser-,     Reib-          und    Lichtechtheit.



  Process for the production of a cobalt-containing azo dye. The subject of the present patent is a process for the production of a cobalt-containing azo dye. The process is characterized in that dia: zotierte 2-amino-phenol-4-ethylsulfone is coupled with acetoacetic, acid-p-ehloi = anilide 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 quality, milled, seawater, rub and light.



  <I> Example: </I> 20.1 parts of 2-aminophenol-4-ethyl-sulfone are concentrated in 250 parts of hot water with 17.5 parts. Dissolved hydrochloric acid, cooled to 5 ah and with a 33 per cent. Sodium nitrite solution (corresponding to 6.9 parts of Na <B> 1 </B> rium nitrite 100 1 / o) diazotized. By adding sodium bicarbonate, it is made neutral and poured.

   the diazonium compound at 0-5 in a solution of 22.2 parts of acetoacetic acid-p-chloro-anilide, 11 parts by volume of 10N sodium hydroxide solution and 12 parts of anhydrous soda in 800 parts of water. After the formation of the dye has ended, the precipitated dye is filtered off and washed with werd.

           Saline solution. It is then suspended in 800 parts of water at 80, 60 parts of cobalt acetate solution (corresponding to 3.54 parts of cobalt) are added, the mixture is heated to 80 for 3 hours, made alkaline by adding soda and heated to 80-85 for a further 3 hours. Table salt is then 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 liter wash, milled, seawater, rub and lightfastness.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines kobalt- haltigen Azofarbstoffes,dadurch gekennzeich net., dass man diazotiertes 2-Amino-phenol-4- äthyIsulfon mit Acetessigsäure-p-chlor-anilid 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-amino-phenol-4-ethy-sulfone is coupled with acetoacetic acid-p-chloro-anilide 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, the wool from a neutral or weakly acidic bath in yellow tones is very good for washing, fulling, seawater, rubbing and rubbing. Light fastness colors.
CH308409D 1952-01-05 1952-01-05 Process for the production of a cobalt-containing azo dye. CH308409A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH304386T 1952-01-05
CH308409T 1952-01-05

Publications (1)

Publication Number Publication Date
CH308409A true CH308409A (en) 1955-07-15

Family

ID=25734777

Family Applications (1)

Application Number Title Priority Date Filing Date
CH308409D CH308409A (en) 1952-01-05 1952-01-05 Process for the production of a cobalt-containing azo dye.

Country Status (1)

Country Link
CH (1) CH308409A (en)

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