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CH259321A - 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
CH259321A
CH259321A CH259321DA CH259321A CH 259321 A CH259321 A CH 259321A CH 259321D A CH259321D A CH 259321DA CH 259321 A CH259321 A CH 259321A
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 CH259321A publication Critical patent/CH259321A/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.B    man 1     Mol        tütrazotiertes          Dianisidin    mit 1     Mol        1-Oxyna,phthalin-3,6,8-          trisulfonsäure    und 1     Mol        5,5'-Dioxy-7,7'-di-          sulfo-1,1',2',

  2-din.aphthazin    kuppelt und den  erhaltenen Farbstoff mit einem     kupferabge-          benden    Mittel     behandelt.     



  Im Beispiel bedeuten die Teile Gewichts  teile.  



  <I>Beispiel:</I>  24.4 Teile     Dianisidin    werden wie üblich       tetrazotiert    und unter Eiskühlung mit 38,4  Teilen     1-Oxynaphthalin-3,6,8-tris.ulfonsäure     in Gegenwart von Soda vereinigt. Nach er  folgter Bildung der Zwischenverbindung  wird eine alkalische     Lösung    des     NTatriumsal-          zes    von 47,2 Teilen     5,5'-Dioxy-7,7'-disulfo-          l,l',2',2-,dinaphthazin    zugefügt. Zur Beförde  rung der Kupplung kann man 5 bis 10 Vo  lumenprozent     Pyridinbasengemisch    zusetzen.  Nach     beendeter    Kupplung isoliert man den  Farbstoff.

   Er löst sich in     Wasser    mit grün  stichig     blauer    und in konzentrierter Schwe  felsäure mit blaugrüner Farbe.  



  Zur Überführung in den Kupferkomplex  werden 123,2 Teile Farbstoff in 2000 Teilen    Wasser und 20 Teilen Soda gelöst. Bei 80 bis       30     werden unter Rühren allmählich 500  Teile einer     Kupferoxy        dammoniaklösung,    ent  haltend 50 Teile     krist.    Kupfersulfat und 85  Teile konzentrierte     wässerige    Ammoniak  lös:ung, zugefügt. Dann wird zum Kochen  getrieben und unter     Rückfluss    2,0 Stunden  gekocht. Der entstandene Kupferkomplex  wird     abgeschieden.,        filtriert        und    getrocknet.  



  Er färbt Baumwolle und     regenerierte    Zel  lulose in lebhaften,     grünstichig    blauen Tönen  von     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 mol of tütrazotierter dianisidine with 1 mol of 1-oxyna, phthalene-3,6,8-trisulfonic acid and 1 mol of 5.5 '-Dioxy-7,7'-disulfo-1,1', 2 ',

  2-din.aphthazine couples and the dye obtained is treated with a copper-releasing agent.



  In the example, the parts mean parts by weight.



  <I> Example: </I> 24.4 parts of dianisidine are tetrazotized as usual and combined with 38.4 parts of 1-oxynaphthalene-3,6,8-trisulfonic acid in the presence of soda, while cooling with ice. After the intermediate compound has formed, an alkaline solution of the N sodium salt of 47.2 parts of 5,5'-dioxy-7,7'-disulfol, 1 ', 2', 2-, dinaphthazine is added. To promote the coupling, 5 to 10 volume percent pyridine base mixture can be added. After the coupling has ended, the dye is isolated.

   It dissolves in water with a green tinge of blue and in concentrated sulfuric acid with a blue-green color.



  To convert into the copper complex, 123.2 parts of dye are dissolved in 2000 parts of water and 20 parts of soda. At 80 to 30, 500 parts of a copper oxy-ammonia solution, containing 50 parts of crystal, are gradually added with stirring. Copper sulfate and 85 parts of concentrated aqueous ammonia solution are added. It is then brought to the boil and refluxed for 2.0 hours. The resulting copper complex is deposited, filtered and dried.



  It dyes cotton and regenerated cellulose in lively, greenish blue shades of good lightfastness and washfastness.

 

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines neuen kupferhaltigen Azofarbstoffes, dadurch ge kennzeichnet, da.$ man 1 Mol tetrazotiertes Dianisidin mit 1 31o1 1-Oxynaphthalin-3,6,8- trisulfonsäure und 1 Mol 5,5'-Dioxy-7,7'-di- sulfo-1,1',2',2-dinaphthazin kuppelt und den erhaltenen Farbstoff mit einem kupferabge benden Mittel behandelt. PATENT CLAIM: Process for the preparation of a new copper-containing azo dye, characterized in that 1 mol of tetrazotized dianisidine is mixed with 1 31o1 1-oxynaphthalene-3,6,8-trisulfonic acid and 1 mol of 5,5'-dioxy-7,7 ' -Disulfo-1,1 ', 2', 2-dinaphthazine couples and the dye obtained is treated with a copper-releasing agent. Der neue kupferhaltige Azofarbstoff färbt Baumwolle und regenerierte Zellulose in lebhaften grünstichig blauen Tönen. von guter Licht- und Naschechtheit. The new copper-containing azo dye dyes cotton and regenerated cellulose in lively greenish blue tones. of good light and snack fastness.
CH259321D 1946-12-13 1946-12-13 Process for the production of a copper-containing azo dye. CH259321A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH259321T 1946-12-13
CH253479T 1952-07-09

Publications (1)

Publication Number Publication Date
CH259321A true CH259321A (en) 1949-01-15

Family

ID=25729755

Family Applications (1)

Application Number Title Priority Date Filing Date
CH259321D CH259321A (en) 1946-12-13 1946-12-13 Process for the production of a copper-containing azo dye.

Country Status (1)

Country Link
CH (1) CH259321A (en)

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