CH309417A - Process for the preparation of a metal-containing azo dye. - Google Patents

Process for the preparation of a metal-containing azo dye.

Info

Publication number
CH309417A
CH309417A CH309417DA CH309417A CH 309417 A CH309417 A CH 309417A CH 309417D A CH309417D A CH 309417DA CH 309417 A CH309417 A CH 309417A
Authority
CH
Switzerland
Prior art keywords
dye
cobalt
parts
preparation
metal
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 CH309417A publication Critical patent/CH309417A/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
    • 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
    • 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   <B>zur Herstellung eines metallhaltigen</B>     Azofarbstoffes.            Gegenstand    vorliegenden Patentes ist ein  Verfahren zur Herstellung eines metallhal  tigen     Azofarbstoffes.    Das Verfahren ist da  durch gekennzeichnet, dass man einen Farb  stoff der Formel  
EMI0001.0005     
    mit     kobaltabgebenden    Mitteln unter solchen  Bedingungen behandelt, dass auf zwei     Farb-          stoffmoleküle        mindestens    ein Atom Kobalt  komplex gebunden wird.  



  Der erhaltene neue     kobalthaltige    Farbstoff  stellt ein braunrotes Pulver dar, das Wolle  aus neutralem oder schwach saurem Bade     in          violettroten    Tönen von hervorragender Licht  und sehr guter Wasch- und     Walkechtheit     färbt.  



       Beispiel:     29,2 Teile     2-Amino-l-phenol-4-phenylketon-          3'-sulfonsäureamidwerden    in 300 Teilen Was-         ser    mit 20     Volumteilen        10n-Natronlauge    ge  löst, mit 20     Volumteilen        5n-Natriumnitrit-          lösung    versetzt und bei 5-10  langsam auf  eine Lösung von 40 Teilen konzentrierter       Salzsäure    und 100 Teilen Wasser getropft.

    Danach neutralisiert man die gelbe Suspen  sion der     Diazoniumverbindung    mit     Natrium-          bikarbonat,    gibt noch 3 Teile     Natriumbikar-          bonat    zu     und    giesst eine kalte Lösung von  15,1 Teilen     2-Oxynaphthalin,    13     Volumteilen          10n-Natronlauge    in 300 Teilen Wasser zu.  Nach etwa 3 Stunden ist die     Farbstoffbil-          dung    beendet.

   Man fällt den Farbstoff durch  Zugabe von Kochsalz aus, filtriert ihn ab  und schlämmt ihn in 700 Teilen Wasser von  80  an, gibt 60 Teile     Kobaltacetatlösi-mg    (ent  sprechend 3,54 Teilen Co) zu, erhitzt während  3 Stunden auf 80 , stellt durch Zugabe von       Natriumkarbonat    alkalisch und erhitzt noch  weitere 3 Stunden auf 80 . Danach gibt man  Kochsalz zu, bis der     kobalthaltige    Farbstoff  ausfällt, worauf man filtriert -und trocknet.  Der neue Farbstoff, ein braunrotes     Pulver,          Tärbt    Wolle aus neutralem oder schwach sau  rem Bade in     violettroten    Tönen von hervor  ragender Licht- und sehr guter Wasch- und       Walkechtheit.  



      Process <B> for the production of a metal-containing </B> azo dye. The present patent is a process for the preparation of a metallhal term azo dye. The process is characterized by the fact that a dye of the formula
EMI0001.0005
    Treated with cobalt-releasing agents under such conditions that at least one atom of cobalt is complexed on two dye molecules.



  The new cobalt-containing dye obtained is a brown-red powder which dyes wool from a neutral or weakly acidic bath in violet-red shades of excellent light and very good fastness to washing and milled.



       Example: 29.2 parts of 2-amino-1-phenol-4-phenylketone-3'-sulfonic acid amide are dissolved in 300 parts of water with 20 parts by volume of 10N sodium hydroxide solution, mixed with 20 parts by volume of 5N sodium nitrite solution and at 5- 10 slowly added dropwise to a solution of 40 parts of concentrated hydrochloric acid and 100 parts of water.

    The yellow suspension of the diazonium compound is then neutralized with sodium bicarbonate, 3 parts of sodium bicarbonate are added and a cold solution of 15.1 parts of 2-oxynaphthalene and 13 parts by volume of 10N sodium hydroxide solution in 300 parts of water are poured in. The formation of the dye has ended after about 3 hours.

   The dye is precipitated by adding sodium chloride, filtered off and suspended in 700 parts of water at 80, 60 parts of cobalt acetate solution (corresponding to 3.54 parts of Co) are added, the mixture is heated to 80 for 3 hours and then passed through Addition of sodium carbonate alkaline and heat for a further 3 hours to 80. Table salt is then added until the cobalt-containing dye precipitates, after which it is filtered and dried. The new dye, a brownish-red powder, dyes wool from neutral or slightly acidic baths in violet-red shades of excellent lightfastness and very good wash and milled fastness.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines metall haltigen Azofarbstoffes, dadurch gekennzeich net, dass man einen Farbstoff der Formel EMI0002.0001 mit kobaltabgebenclen Mitteln unter solehen Bedingungen behandelt, dass anf zwei Farb- stoffmoleküle mindestens ein Atom Kobalt komplex gebunden wird. PATENT CLAIM: Process for the preparation of a metal-containing azo dye, characterized in that a dye of the formula EMI0002.0001 treated with cobalt-releasing agents under such conditions that at least one atom of cobalt is complexed to two dye molecules. Der erhaltene neue kobalthaltige Farb stoff stellt ein braunrotes Pulver dar, das Wolle aus neutralem oder seh-%%raeh saurem Bade in violettroten Tönen von hervorragen der Lieht- und sehr guter Wasch- und Walk eehtheit färbt. The new, cobalt-containing dye is a brown-red powder that dyes wool from a neutral or very acidic bath in violet-red tones with excellent lightness and very good wash and milledness.
CH309417D 1952-04-07 1952-04-07 Process for the preparation of a metal-containing azo dye. CH309417A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH309417T 1952-04-07
CH306995T 1955-05-15

Publications (1)

Publication Number Publication Date
CH309417A true CH309417A (en) 1955-08-31

Family

ID=25735229

Family Applications (1)

Application Number Title Priority Date Filing Date
CH309417D CH309417A (en) 1952-04-07 1952-04-07 Process for the preparation of a metal-containing azo dye.

Country Status (1)

Country Link
CH (1) CH309417A (en)

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