CH294235A - Process for the preparation of a copper-containing disazo dye. - Google Patents

Process for the preparation of a copper-containing disazo dye.

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Publication number
CH294235A
CH294235A CH294235DA CH294235A CH 294235 A CH294235 A CH 294235A CH 294235D A CH294235D A CH 294235DA CH 294235 A CH294235 A CH 294235A
Authority
CH
Switzerland
Prior art keywords
copper
disazo dye
preparation
parts
dye
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 CH294235A publication Critical patent/CH294235A/en

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Description

  

  Verfahren     zur    Herstellung eines kupferhaltigen     Disazofarbstoffes.            Gegenstand    vorliegenden Patentes ist ein  Verfahren zur Herstellung eines kupferhal  tigen     Disazofarbstoffes.    Das Verfahren ist da  durch gekennzeichnet,     da.ss    man 1     Mol    tetrazo-         tiertes        4,4'-Diamino-3,3'-dimethoxy-diphenyl    in  beliebiger Reihenfolge nacheinander mit 1     Mol          L-Oxy-naphthalin-3,

  8-disulfonsäure    und 1     Mol     der     Verbindung     
EMI0001.0013     
    kuppelt und den erhaltenen     Disazofarbstoff     mit kupferabgebenden Mitteln behandelt.  



  Der erhaltene neue Farbstoff stellt ein  dunkles Pulver dar, das sich in Wasser mit.  blauer Farbe löst und     Cellulosefasern    in leb  haften blauen Tönen färbt.         Beispiel:     Zu der Zwischenverbindung aus 24,4 Tei  len     tetrazotiertem        o-Dianisidin    und 30,4 Tei  len     l.-Oxy-naphthalin-3,8-disulfonsäure    wird  eine     ammoniakalische    Lösung, enthaltend 51,8  Teile der folgenden Verbindung  
EMI0001.0021     
    zulaufen gelassen und bis     zur        Beendigung    der  Kupplung verrührt.

   Der     Disazofarbstoff    wird  in 2500 Teilen Wasser bei 80 bis 85  gelöst  und bei dieser Temperatur 400 Teile einer       Kupferoxydammoniaklösung,    die 50 Teile     krist.     Kupfersulfat und 120 Teile     konz.        wässrigen          Ammoniak    enthält,     zugefügt.    Es wird 4 bis 5  Stunden auf 80 bis 85  erhitzt und nach Zu  fügen von weiteren 50 Teilen einer     konz.          Ammoniaklösung   <B>15</B> bis 20 Stunden auf 90    bis 95  erhitzt. Der gebildete Kupferkom  plex wird mit Kochsalz     aufgefällt,    filtriert  und getrocknet.

   Er stellt ein dunkles Pulver  dar, das sich in Wasser mit blauer Farbe löst  und     Cellulosefasern    in lebhaften blauen Tönen  von sehr guter Wasser- und Lichtechtheit.  färbt.



  Process for the preparation of a copper-containing disazo dye. The present patent is a process for the preparation of a kupferhal term disazo dye. The process is characterized in that 1 mole of tetrazolated 4,4'-diamino-3,3'-dimethoxy-diphenyl is mixed in any order with 1 mole of L-oxynaphthalene-3,

  8-disulfonic acid and 1 mole of the compound
EMI0001.0013
    coupled and treated the disazo dye obtained with copper donating agents.



  The new dye obtained is a dark powder that dissolves in water with. blue paint dissolves and dyes cellulose fibers in vivid blue tones. Example: An ammoniacal solution containing 51.8 parts of the following compound is added to the intermediate compound of 24.4 parts of tetrazotized o-dianisidine and 30.4 parts of 1.-oxynaphthalene-3,8-disulfonic acid
EMI0001.0021
    allowed to run in and stirred until the coupling is complete.

   The disazo dye is dissolved in 2500 parts of water at 80 to 85 and at this temperature 400 parts of a copper oxide ammonia solution containing 50 parts of crystalline. Copper sulfate and 120 parts of conc. containing aqueous ammonia, added. It is heated to 80 to 85 hours for 4 to 5 hours and after adding another 50 parts of a conc. Ammonia solution heated to 90 to 95 for 15 to 20 hours. The copper complex formed is precipitated with common salt, filtered and dried.

   It is a dark powder that dissolves in water with a blue color and cellulose fibers in vivid blue tones with very good water and lightfastness. colors.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines kupfer haltigen Disazofa.rbstoffes, dadurch gekenn- zeichnet, dass man 1 Mol tetrazotiertes 4,4'- Diamino-3,3'-dimethoxy-diphenyl in beliebiger Reihenfolge nacheinander mit 1 Mol l.-Oxy- naphthalin-3,8-disulfonsäiire und 1 1lol der Verbindung EMI0002.0011 kuppelt und den erhaltenen Disazofarbstoff mit kupferabgebenden Mitteln behandelt. PATENT CLAIM: Process for the production of a copper-containing disazofa dye, characterized in that 1 mol of tetrazotized 4,4'-diamino-3,3'-dimethoxy-diphenyl is successively mixed with 1 mol of l.-oxynaphthalene in any order -3,8-disulfonic acid and 1 lol of the compound EMI0002.0011 coupled and treated the disazo dye obtained with copper donating agents. Der erhaltene neue Farbstoff stellt ein chlnkles Pulver dar, das sieh in Wasser mit blauer Farbe löst, und Cellulosefasern in leb baften blauen Tönen färbt. The new dye obtained is a small powder which dissolves in water with a blue color and dyes cellulose fibers in vivid blue tones.
CH294235D 1951-02-07 1951-02-07 Process for the preparation of a copper-containing disazo dye. CH294235A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH291510T 1951-02-07
CH294235T 1951-02-07

Publications (1)

Publication Number Publication Date
CH294235A true CH294235A (en) 1953-10-31

Family

ID=25733116

Family Applications (1)

Application Number Title Priority Date Filing Date
CH294235D CH294235A (en) 1951-02-07 1951-02-07 Process for the preparation of a copper-containing disazo dye.

Country Status (1)

Country Link
CH (1) CH294235A (en)

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