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CH227499A - 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
CH227499A
CH227499A CH227499DA CH227499A CH 227499 A CH227499 A CH 227499A CH 227499D A CH227499D A CH 227499DA CH 227499 A CH227499 A CH 227499A
Authority
CH
Switzerland
Prior art keywords
preparation
metal
azo dye
dye
containing substantive
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 CH227499A publication Critical patent/CH227499A/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

  

      Zusatzpatent    zum Hauptpatent Nr. 222797.    Verfahren zur Darstellung eines metallhaltigen     substantiven        Azofarbstoffes.       Das vorliegende Patent betrifft ein Ver  fahren zur Darstellung eines metallhaltigen         substautiven        Azofarbstoffes    und ist dadurch       gekennzeichnet,    dass man den     Disazofarb-          stoff    der Formel  
EMI0001.0009     
         diazotiert,    mit     2-Phenylamino-5-oxynaphtha-          lin-7-sulfonsäure    kuppelt und das.

   Kupp  lungsprodukt in den Kupferkomplex     über-          filhrt.       <I>Beispiel:</I>  63,7 Teile des     Disazofarbstoffes    der For  mel  
EMI0001.0016     
      werden mit 6,9 Teilen     Natriumnitrit    und  25 Teilen Salzsäure     diazotiert    und mit einer  wässerigen Lösung von 31,5 Teilen     2-Phe-          nylamino-5-oxynaphthalin-7-sulfonsäure    in  Gegenwart von 50 Teilen     Natriumbicarbonat     und 50 Teilen technischem     Pyridinbasen-          gemisch    in der Kälte gekuppelt. Nach Zusatz  von Salz wird filtriert.

   Der Rückstand wird  wieder in Wasser gelöst und mit 25 Teilen  Kupfersulfat in Gegenwart von Natrium  acetat in der Wärme in die Kupferverbin  dung übergeführt. Der     ausgesalzene,    ge  trocknete und filtrierte Farbstoff stellt ein  bronzierendes Pulver dar, das Baumwolle    sowie Kunstseide aus regenerierter Zellulose  sehr wasch- und lichtecht blau von sehr  gutem Ziehvermögen färbt.  



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



      Additional patent to main patent No. 222797. Process for the preparation of a metal-containing substantive azo dye. The present patent relates to a process for the preparation of a metal-containing substautiven azo dye and is characterized in that the disazo dye of the formula
EMI0001.0009
         diazotized, coupled with 2-phenylamino-5-oxynaphthalin-7-sulfonic acid and that.

   Coupling product transferred into the copper complex. <I> Example: </I> 63.7 parts of the disazo dye of the formula
EMI0001.0016
      are diazotized with 6.9 parts of sodium nitrite and 25 parts of hydrochloric acid and with an aqueous solution of 31.5 parts of 2-phenylamino-5-oxynaphthalene-7-sulfonic acid in the presence of 50 parts of sodium bicarbonate and 50 parts of technical pyridine base mixture in the Cold coupled. 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 in the heat. The salted out, dried and filtered dye is a bronzing powder that dyes cotton and rayon made from regenerated cellulose in a very washable and lightfast blue with very good drawability.



  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 EMI0002.0015 diazotiert, mit 2-Phenylamino-5-oxynaphtha- lin.-7-sulfonsäure kuppelt und das Kupp lungsprodukt in den Kupferkomplex über führt. PATENT CLAIM: Process for the preparation of a metal-containing substantive azo dye, characterized in that the disazo dye of the formula EMI0002.0015 diazotized, coupled with 2-phenylamino-5-oxynaphtha- lin.-7-sulfonic acid and the coupling product leads to the copper complex. Der neue Farbstoff stellt ein bronzieren- des Pulver dar, das Baumwolle sowie Kunst seide aus regenerierter Zellulose wasch- und lichtecht blau färbt und ein sehr gutes Zieh vermögen besitzt. The new dye is a bronzing powder that dyes cotton and synthetic silk made from regenerated cellulose in a wash- and light-fast blue and has very good drawability.
CH227499D 1941-07-14 1941-07-14 Process for the preparation of a metal-containing substantive azo dye. CH227499A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH227499T 1941-07-14
CH571334X 1941-07-14

Publications (1)

Publication Number Publication Date
CH227499A true CH227499A (en) 1943-06-15

Family

ID=25727113

Family Applications (1)

Application Number Title Priority Date Filing Date
CH227499D CH227499A (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) CH227499A (en)

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