CH259323A - 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
CH259323A
CH259323A CH259323DA CH259323A CH 259323 A CH259323 A CH 259323A CH 259323D A CH259323D A CH 259323DA CH 259323 A CH259323 A CH 259323A
Authority
CH
Switzerland
Prior art keywords
copper
azo dye
containing azo
parts
production
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 CH259323A publication Critical patent/CH259323A/en

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Description

  

      Verfahren    zur Herstellung eines kupferhaltigen     Azofarbstoffes.            Das    vorliegende Patent     betrifft    ein Ver  fahren zur Herstellung eines neuen kupfer  haltigen     Azofarbstoffes    und ist dadurch ge  kennzeichnet,     da.ss    man 1     11o1        tetrazotiertes          Dianisidin    mit 1     Mol        2-Ohynaphthalin-3,6-          disulfonsäure    und 1     Mol        2-Sulfo-4-oxy-a,

  ss-          naphthophenazin    kuppelt und den erhaltenen  Farbstoff mit einem kupferabgebenden Mittel  behandelt.  



       hn    Beispiel bedeuten Teile     Gewichtsteile.            Beispiel:     24,4 Teile     Dianisidin    werden wie üblich       tetrazotiert    und unter Eiskühlung mit 30,4  Teilen     2-Oxynaphthalin-3,6-disulfonsäure    in  Gegenwart von Soda vereinigt. Nach erfolg  ter Bildung der Zwischenverbindung wird  eine alkalische Lösung des     Natriumsalzes    von  32,6 Teilen     2-Sulfo-4-oxy-a,ss-naphthophena-          zin    zugefügt.

   Zur Beförderung der Kupplung  kann man 5 bis<B>10</B>     Volumprozent        Pyridin-          basengemisch    zusetzen. Nach beendeter Kupp  lung isoliert man den Farbstoff. Er löst sich  in Wasser mit     rotstiehig    blauer und in kon  zentrierter Schwefelsäure mit lebhaft blauer  Farbe.  



  Zur Überführung in den Kupferkomplex  werden 96.2 Teile Farbstoff in 3000 Teilen         NVasser    und 20 Teilen Soda     gelöst.    Bei 80  bis     90     werden unter Rühren allmählich     500     Teile einer     Kupferoxydammoniaklösung,    ent  haltend 50 Teile     krist.    Kupfersulfat und  85 Teile konzentrierte     wässrige        Ammoniak-          lösung,    zugefügt. Es wird 5 Stunden     bei    90<B>'</B>  <B>M</B> n       erührt    und dann 18 Stunden unter     Rückfluss     gekocht.

   Der entstandene Kupferkomplex  wird isoliert, filtriert und getrocknet. Er  färbt Baumwolle und Zellwolle in     grünstichig     blaugrauen Tönen von sehr guter Licht- und  Waschechtheit.



      Process for the production of a copper-containing azo dye. The present patent relates to a process for the production of a new copper-containing azo dye and is characterized in that 1 11o1 tetrazotized dianisidine is mixed with 1 mol of 2-ohynaphthalene-3,6-disulfonic acid and 1 mol of 2-sulfo-4-oxy -a,

  ss- naphthophenazine couples and treated the dye obtained with a copper donor.



       In the example, parts mean parts by weight. Example: 24.4 parts of dianisidine are tetrazotized as usual and combined with 30.4 parts of 2-oxynaphthalene-3,6-disulfonic acid in the presence of soda, while cooling with ice. After the intermediate compound has formed, an alkaline solution of the sodium salt of 32.6 parts of 2-sulfo-4-oxy-a, s-naphthophenazine is added.

   To move the coupling, 5 to 10 percent by volume of a pyridine base mixture can be added. After coupling has ended, the dye is isolated. It dissolves in water with a reddish blue color and in concentrated sulfuric acid with a vivid blue color.



  To convert into the copper complex, 96.2 parts of the dye are dissolved in 3000 parts of N water and 20 parts of soda. At 80 to 90, 500 parts of a copper oxide ammonia solution containing 50 parts of crystalline gradually become with stirring. Copper sulfate and 85 parts of concentrated aqueous ammonia solution are added. It is stirred at 90 <B> '</B> <B> M </B> n for 5 hours and then refluxed for 18 hours.

   The copper complex formed is isolated, filtered and dried. It dyes cotton and rayon in greenish blue-gray shades of very good lightfastness and washfastness.

Claims (1)

PATENTANSPRUCH: Verfahren zur Verstellung eines neuen kupferhaltigen Azofarbstoffes, dadurch ge kennzeichnet, dass man 1 Mol tetrazotiertes Dianisidin mit 1 1M1 2-Oxy naplithalin-3,6- disulfonsäure und 1 Mol 2-Sulfo-4-oxy-a,ss- naplithophenazin kuppelt und den erhaltenen Farbstoff mit. einem kupferabgebenden Mittel behandelt. PATENT CLAIM: Process for adjusting a new copper-containing azo dye, characterized in that 1 mol of tetrazotized dianisidine is coupled with 1 1M1 of 2-oxy naplithalin-3,6-disulfonic acid and 1 mol of 2-sulfo-4-oxy-a, ss- naplithophenazine and the obtained dye with. treated with a copper-releasing agent. Der neue kupferhaltige Azofarbstoff färbt Baumwolle und Zellwolle in grünstichig blau grauen Tönen von sehr -guter Licht- und \Vaschechtheit. The new copper-containing azo dye dyes cotton and rayon in greenish blue-gray tones of very good light and vasfastness.
CH259323D 1946-12-13 1946-12-13 Process for the production of a copper-containing azo dye. CH259323A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH259323T 1946-12-13
CH253479T 1952-07-09

Publications (1)

Publication Number Publication Date
CH259323A true CH259323A (en) 1949-01-15

Family

ID=25729757

Family Applications (1)

Application Number Title Priority Date Filing Date
CH259323D CH259323A (en) 1946-12-13 1946-12-13 Process for the production of a copper-containing azo dye.

Country Status (1)

Country Link
CH (1) CH259323A (en)

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