CH259318A - Process for the production of a copper-containing azo dye. - Google Patents

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

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Publication number
CH259318A
CH259318A CH259318DA CH259318A CH 259318 A CH259318 A CH 259318A CH 259318D A CH259318D A CH 259318DA CH 259318 A CH259318 A CH 259318A
Authority
CH
Switzerland
Prior art keywords
copper
containing azo
production
azo dye
mol
Prior art date
Application number
Other languages
German (de)
Inventor
Ag Sandoz
Original Assignee
Ag Sandoz
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 Sandoz filed Critical Ag Sandoz
Publication of CH259318A publication Critical patent/CH259318A/en

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Description

  

  Verfahren zur Herstellung eines kupferhaltigen     Azofarhstoffes.       Das vorliegende Patent betrifft ein Ver  fahren zur Herstellung eines neuen kupfer  haltigen     Azofa.rbstoffes    und ist dadurch ge  kennzeichnet, dass man 1     Mol        tetra.zotiertes          Dianisidin    mit 1     Mol        1,8-Dioxy        naphthalin-          3,6-disulfonsäure    und 1     Mol        2-Sulfo-4-oxy-          a,ss-naphtlio13henazin    kuppelt     und    den erhal  tenen Farbstoff mit einem kupferabgebenden  Mittel behandelt.

    



  Im Beispiel     bedeuten    Teile Gewichtsteile.    <I>Beispiel:</I>  24,4 Teile     Dianisidin    werden wie üblich       tetrazotiert    und unter Eiskühlung     mit    32  Teilen     1,8-Dioxyml.phthalin-3,6-disulfonsäure     in     Gegenwart    von Soda vereinigt. Nach.     er-          fofgter    Bildung der Zwischenverbindung  wird eine alkalische Lösung des     Natriumsal-          zes    von 32,6 Teilen     2-Sulfo-4-oxy-a,ss-naph-          thophenazin    zugefügt.

   Zur Beförderung der  Kupplung kann man 5 bis 10 Volumenpro  zent     Pyridinbasengemisch    zusetzen. Nach be  endeter Kupplung isoliert man den Farb  stoff. Er löst sich in Wasser mit     grünstichig     blauer und in     konzentrierter    Schwefelsäure  mit     grünstiehig        graublauer    Farbe.  



  Zur Überführung in die Kupferverbin  dung     werden    97,8 Teile Farbstoff in 2000    Teilen Wasser     und    20 Teilen Soda gelöst.  Bei 80 bis 90  werden unter Rühren allmäh  lich 500 Teile einer     Kupferoxydammoniak-          lösung,        enthaftend    50 Teile     krist.    Kupfersul  fat und 85 Teile konzentrierte wässerige       Ammoniaklösung,    zugefügt.

   Es wird 5 Stun  den bei 90  gerührt und dann 18 Stunden  unter     Rückfluss    gekocht.     Der    entstandene  Kupferkomplex     wird    isoliert, filtriert und       getrocknet.    Er färbt Baumwolle und Zellu  lose in     grünstichig    blaugrauen Tönen von       guter    Waschechtheit und vorzüglicher Licht  echtheit.



  Process for the production of a copper-containing azo carbon. The present patent relates to a process for the production of a new copper-containing azo-dye and is characterized in that 1 mol of tetra-doped dianisidine is mixed with 1 mol of 1,8-dioxynaphthalene-3,6-disulfonic acid and 1 mol of 2- Sulfo-4-oxy- a, ss-naphtlio13henazin couples and treats the obtained dye with a copper-releasing agent.

    



  In the example, parts mean parts by weight. <I> Example: </I> 24.4 parts of dianisidine are tetrazotized as usual and combined with 32 parts of 1,8-dioxymlphthalin-3,6-disulfonic acid in the presence of soda, while cooling with ice. To. Once the intermediate compound has formed, an alkaline solution of the sodium salt of 32.6 parts of 2-sulfo-4-oxy-a, ss-naphthophenazine is added.

   To promote the coupling you can add 5 to 10 percent by volume pyridine base mixture. After the coupling has ended, the dye is isolated. It dissolves in water with a greenish blue color and in concentrated sulfuric acid with a greenish grayish blue color.



  To convert into the copper compound, 97.8 parts of dye are dissolved in 2000 parts of water and 20 parts of soda. At 80 to 90, with stirring, 500 parts of a copper oxide ammonia solution, containing 50 parts of crystalline, gradually become. Copper sulfate and 85 parts of concentrated aqueous ammonia solution are added.

   It is stirred for 5 hours at 90 and then refluxed for 18 hours. The copper complex formed is isolated, filtered and dried. It dyes cotton and cellulose in greenish blue-gray tones with good washfastness and excellent lightfastness.

Claims (1)

PATENTA-NSPRUCH: Verfahren zur Herstellung eines neuen kupferhaltigen Azofarbstoffes, dadurch ge- kennzeichnet, da.ss man 1 Mol tetrazotiertes Dianisidin mit 1 Mol' 1,8-Dioxynaphthalin- 3,6-disulfori#säure und 1 Mol 2-Sulfo-4-oxy- u,ss-naphthophenazin kuppelt und den erhal tenen Farbstoff mit einem kupferabgebenden Mittel behandelt. PATENT APPLICATION: Process for the production of a new copper-containing azo dye, characterized in that 1 mol of tetrazotized dianisidine is mixed with 1 mol of 1,8-dioxynaphthalene-3,6-disulforic acid and 1 mol of 2-sulfo-4 -oxy- u, ss-naphthophenazine couples and treated the obtained dye with a copper donor. Der neue kupferhaltige Azofarbstoff färbt Baumwolle und Zellulose in grünstichig blaugrauen Tönen von guter Waschechtheit und vorzüglicher Lichtechtheit. The new copper-containing azo dye dyes cotton and cellulose in greenish blue-gray shades of good washfastness and excellent lightfastness.
CH259318D 1946-12-13 1946-12-13 Process for the production of a copper-containing azo dye. CH259318A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH259318T 1946-12-13
CH253479T 1952-07-09

Publications (1)

Publication Number Publication Date
CH259318A true CH259318A (en) 1949-01-15

Family

ID=25729752

Family Applications (1)

Application Number Title Priority Date Filing Date
CH259318D CH259318A (en) 1946-12-13 1946-12-13 Process for the production of a copper-containing azo dye.

Country Status (1)

Country Link
CH (1) CH259318A (en)

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