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CH227500A - Process for the preparation of a metal-containing substantive azo dye. - Google Patents

Process for the preparation of a metal-containing substantive azo dye.

Info

Publication number
CH227500A
CH227500A CH227500DA CH227500A CH 227500 A CH227500 A CH 227500A CH 227500D A CH227500D A CH 227500DA CH 227500 A CH227500 A CH 227500A
Authority
CH
Switzerland
Prior art keywords
metal
dye
azo dye
preparation
diazotized
Prior art date
Application number
Other languages
German (de)
Inventor
Sandoz A G
Original Assignee
Sandoz Ag
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 Sandoz Ag filed Critical Sandoz Ag
Publication of CH227500A publication Critical patent/CH227500A/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B31/00—Disazo and polyazo dyes of the type A->B->C, A->B->C->D, or the like, prepared by diazotising and coupling
    • C09B31/16—Trisazo dyes

Landscapes

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

Description

  

  <B>Zusatzpatent</B> zum Hauptpatent Nr. 222797.         -Verfahren    zur Darstellung eines metallhaltigen Substantiven     Azofarbstoffes.       Das vorliegende Patent betrifft ein Ver  fahren zur     Darstellung    eines metallhaltigen    Substantiven     Azofarbstoffes    und ist dadurch       gekennzeichnet,    dass man den     Disazofarbstoff     der Formel  
EMI0001.0007     
         diazotiert,    mit     2-Amino-5-oxynaphthaIin-7-          sulfonsäure    kuppelt und das Kupplungspro  dukt in den Kupferkomplex überführt.

      <I>Beispiel.:</I>  63,7 Teile des     Disazofarbstoffes    vom Auf  bau  
EMI0001.0012     
    werden mit 6,9 Teilen     Natriumnitrit    und  25 Teilen Salzsäure     diazotiert    und mit     einer       wässerigen Lösung von 23,9 Teilen     2-Amino-          5-oxynaphthalin-7-sulfonsäure        in    Gegenwart      von 50 Teilen     Natriumbiearbonat    und 50 Tei  len technischem     Pyridinbasengemisch    in der  Kälte gekuppelt. Nach Zusatz von Salz wird  filtriert.

   Der Rückstand wird     wieder    in  Wasser gelöst und mit 25 Teilen Kupfer  sulfat     in    Gegenwart von     Natriumacetat    in  der Wärme     in    die Kupferverbindung über  geführt. Der     ausgesalzene,    filtrierte und ge  trocknete Farbstoff färbt Baumwolle in rot  stickigen, lebhaften blauen Tönen von her  vorragendem     Ziehvermögen    und     guterWasoh-          und        Lichtechtheit    an.  



  Der so erhaltene Farbstoff besitzt noch    eine     diazotierbare        Aminogruppe.    Er kann in       Substanz    oder auf der Faser     diazotiert    und  mit     Azokomponenten    gekuppelt werden.  



  Die Überführung in den Kupferkomplex  kann mit     ebensogutem    Ergebnis beispiels  weise auch mit Kupfersulfat in Gegenwart  von Ammoniak vorgenommen werden.



  <B> Additional patent </B> to main patent no. 222797. -Process for the representation of a metal-containing noun azo dye. The present patent relates to a process for the representation of a metal-containing noun azo dye and is characterized in that the disazo dye of the formula
EMI0001.0007
         diazotized, coupled with 2-amino-5-oxynaphthaIin-7-sulfonic acid and the coupling product converted into the copper complex.

      <I> Example .: </I> 63.7 parts of the disazo dye from the structure
EMI0001.0012
    are diazotized with 6.9 parts of sodium nitrite and 25 parts of hydrochloric acid and coupled with an aqueous solution of 23.9 parts of 2-amino-5-oxynaphthalene-7-sulfonic acid in the presence of 50 parts of sodium carbonate and 50 parts of technical pyridine base mixture in the cold. After adding salt, it is filtered.

   The residue is redissolved in water and converted into the copper compound with 25 parts of copper sulfate in the presence of sodium acetate while warm. The salted, filtered and dried dye stains cotton in stifling red, lively blue tones with excellent drawability and good fastness to water and light.



  The dye thus obtained still has a diazotizable amino group. It can be diazotized in substance or on the fiber and coupled with azo components.



  The conversion into the copper complex can be carried out with just as good result, for example, with copper sulfate in the presence of ammonia.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines metall haltigen Substantiven Azofarbstoffes, da durch gekennzeichnet, dass man den Disazo- farbstoff der Formel EMI0002.0021 diazotiert, mit 2-Amino-5-ogynaphthalin-7- sulfonsäure kuppelt und das Kupplungspro dukt in den Kupferkomplex überführt. Der neue Farbstoff färbt Baumwolle in rotstickigen, lebhaften blauen Tönen von her vorragendem Ziehvermögen und guter Wasch- und Lichtechtheit an. PATENT CLAIM: Process for the representation of a metal-containing noun azo dye, characterized in that one uses the disazo dye of the formula EMI0002.0021 diazotized, coupled with 2-amino-5-ogynaphthalene-7-sulfonic acid and the coupling product converted into the copper complex. The new dye dyes cotton in lively, red-embroidered blue tones with excellent drawability and good wash and lightfastness. Er besitzt noch eine diazotierbare Aminogruppe. Er kann in Sub stanz oder auf der Faser diazotiert und mit Azokomponenten gekuppelt werden. He still has a diazotizable amino group. It can be diazotized in substance or on the fiber and coupled with azo components.
CH227500D 1941-07-14 1941-07-14 Process for the preparation of a metal-containing substantive azo dye. CH227500A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH227500T 1941-07-14
CH571334X 1941-07-14

Publications (1)

Publication Number Publication Date
CH227500A true CH227500A (en) 1943-06-15

Family

ID=25727114

Family Applications (1)

Application Number Title Priority Date Filing Date
CH227500D CH227500A (en) 1941-07-14 1941-07-14 Process for the preparation of a metal-containing substantive azo dye.

Country Status (1)

Country Link
CH (1) CH227500A (en)

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