CH308418A - 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
CH308418A
CH308418A CH308418DA CH308418A CH 308418 A CH308418 A CH 308418A CH 308418D A CH308418D A CH 308418DA CH 308418 A CH308418 A CH 308418A
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 CH308418A publication Critical patent/CH308418A/en

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Classifications

    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09BORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B45/00Complex metal compounds of azo dyes
    • C09B45/02Preparation from dyes containing in o-position a hydroxy group and in o'-position hydroxy, alkoxy, carboxyl, amino or keto groups
    • C09B45/14Monoazo compounds
    • C09B45/20Monoazo compounds containing cobalt

Landscapes

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

Description

  

  Verfahren zur Herstellung eines     kohalthaltigen        Azofarbstoffes.       Gegenstand vorliegenden Patentes ist ein  Verfahren zur Herstellung eines     kobalthal-          tigen        Azofarbstoffes.    Das Verfahren ist da  durch gekennzeichnet,     dass    man     diazotiertes          2-Amino-plienol--1-äthylsulfon    mit     Acetessig-          sätire-2,4-xylidid    kuppelt und die erhaltene  Verbindung mit     kob#Itabgebenden    Mitteln be  handelt.  



  Der erhaltene neue,     kobalthaltige        Azofarb-          stoff    stellt ein gelbbraunes Pulver dar, das  Wolle aus neutralem oder     sellwaeh    saurem  Bade in gelben Tönen von sehr guter Wasch-,  Walk-, Seewasser-, Reib- und     Liehteehtheit     färbt.  



  <I>Beispiel:</I>  20,1 Teile     2-Amino-ph-enol-4-äthyl-siilfon     werden in<B>250</B> Teilen heissem Wasser mit  <B>17,5</B> Teilen     konz.    Salzsäure gelöst,     auf        5(1    ab  gekühlt und mit einer     33proz.        Natriumnitrit-          lösung    (entsprechend<B>6,9</B> Teilen     Natrium-          nitrit        1.001/o)        diazotiert.    Durch Zugabe von       Natriumblearbonat    stellt.

   man neutral     und     giesst die     Diazonhunverbind-ung    bei<B>0</B> bis<B>50</B>  in eine     Lösun-    von<B>21,6</B>     Tellen        Acetessigsäure-          2"4-x#,1,idid,   <B>11</B>     Volumtellen        1,0n--Natronlauge     und 1.2 Teilen     wagserfreier    Soda in<B>800</B> Teilen  Wasser.

   Nach Beendigung der     Farbstoffbil-          dung        fl-Itriert    man den ausgefallenen Farb-         stoff    ab und wäscht ihn mit verdünnter     Koch-          saWösung    aus.

       Da-nach        sehlämmt    man ihn in  <B>800</B> Teilen Wasser von<B>800</B> an, gibt<B>60</B> Teile       Kobaltacetatlösung    (entsprechend 3,54 Teilen  Kobalt) zu, erhitzt während drei Stunden auf  <B>800,</B> stellt durch Zugabe von Soda alkalisch  und erhitzt noch weitere drei Stunden auf<B>80</B>  bis<B>850.</B> Hierauf gibt man Kochsalz zu, bis der       kobalthaltige    Farbstoff     vollstän,        dig    ausgefal  len 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     MIaseh-,    Walk,  Seewasser-, Reib-     und        Liehtechtheit.  



  Process for the production of an azo dye containing carbon. The present patent relates to a process for the production of a cobalt-containing azo dye. The process is characterized in that diazotized 2-amino-plienol-1-ethylsulfone is coupled with acetoacetate-2,4-xylidide and the compound obtained is treated with kob # It-releasing agents.



  The new, cobalt-containing azo dye obtained is a yellow-brown powder that dyes wool from neutral or sellwaeh acidic baths in yellow shades of very good washing, fulling, seawater, rubbing and lightness resistance.



  <I> Example: </I> 20.1 parts of 2-amino-ph-enol-4-ethylsilfon are added to <B> 250 </B> parts of hot water with <B> 17.5 </B> Share conc. Dissolved hydrochloric acid, cooled to 5 (1 and diazotized with a 33% sodium nitrite solution (corresponding to <B> 6.9 </B> parts of sodium nitrite 1,001 / o). Adding sodium carbonate provides.

   neutral and pour the diazonium compound at <B> 0 </B> to <B> 50 </B> in a solution of <B> 21.6 </B> parts of acetoacetic acid- 2 "4-x #, 1, idid, <B> 11 </B> Volumtellen 1.0n - sodium hydroxide solution and 1.2 parts of carbohydrate-free soda in <B> 800 </B> parts of water.

   When the dyestuff has formed, the dyestuff which has precipitated out is filtered off and washed out with dilute cooking solution.

       Then you lamb it in <B> 800 </B> parts of water of <B> 800 </B>, <B> 60 </B> parts of cobalt acetate solution (corresponding to 3.54 parts of cobalt) are added, heated for three hours to <B> 800, </B> makes it alkaline by adding soda and heating for another three hours to <B> 80 </B> to <B> 850. </B> Then add table salt, until the cobalt-containing dye is completely precipitated, filtered off and dried.

   The new dye, a yellow-brown powder, dyes wool from neutral or weakly acidic baths in yellow tones with very good fastness to glass, fulling, sea water, rubbing and lightness.

 

Claims (1)

<B>PATENTANSPRUCH:</B> Verfahren zur Herstellung eines kobalt- haltigen Azofarbstoffes, dadurch gekennzeich net, dass man diazotiertes 2-Amino-phenol- 4-äthylsulfon mit Acetessigsäure-2,4-xylidid kuppelt und die erhaltene Verbindung mit kobaltabgebenden Mitteln behandelt. <B> PATENT CLAIM: </B> Process for the production of a cobalt-containing azo dye, characterized in that diazotized 2-amino-phenol-4-ethylsulfone is coupled with acetoacetic acid-2,4-xylidide and the compound obtained with cobalt-releasing agents treated. Der erhaltene neue, kobalthaltige Azofarb- stoff stellt ein gelbbraunes Pulver dar, das Wolle aus neutralem oder schwach saurem Bade in gelben Tönen von sehr guter Wasch-, Walk-, Seewasser-, Reib- -und Liebtechtheit 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 love.
CH308418D 1952-01-05 1952-01-05 Process for the production of a cobalt-containing azo dye. CH308418A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH308418T 1952-01-05
CH304386T 1952-01-05

Publications (1)

Publication Number Publication Date
CH308418A true CH308418A (en) 1955-07-15

Family

ID=25734786

Family Applications (1)

Application Number Title Priority Date Filing Date
CH308418D CH308418A (en) 1952-01-05 1952-01-05 Process for the production of a cobalt-containing azo dye.

Country Status (1)

Country Link
CH (1) CH308418A (en)

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