CH238450A - Process for the production of a metallizable dye. - Google Patents

Process for the production of a metallizable dye.

Info

Publication number
CH238450A
CH238450A CH238450DA CH238450A CH 238450 A CH238450 A CH 238450A CH 238450D A CH238450D A CH 238450DA CH 238450 A CH238450 A CH 238450A
Authority
CH
Switzerland
Prior art keywords
dye
production
nitro
acid
yellow
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 CH238450A publication Critical patent/CH238450A/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
    • C09B56/00—Azo dyes containing other chromophoric systems
    • C09B56/04—Stilbene-azo dyes

Landscapes

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

Description

  

      Zusatzpatent    zum Hauptpatent Nr.<B>2,36583.</B>    Verfahren zur Herstellung eines     metallisierbaren        Farbstoffes.       Gegenstand des vorliegenden     Patentes    ist  ein Verfahren zur Herstellung eines     metal-          lisierbaren    Farbstoffes.

   Das Verfahren ist  dadurch gekennzeichnet; dass die     Monoazo-          farbstoffe        4-Nitro-4'-aminostilben-2,2'-disul-          fonsäure        --->        Salicylsäure    und     4-Nitro-2-          aminophenol        ->    2 -     Amino    - 4 -     ogytoluol    in  alkalischer Lösung     miteinander    kondensiert  werden.  



  Der neue Farbstoff     stellt    in     gekupfertem     Zustand ein dunkles Pulver dar. Dieses löst  sich in     Wasser    mit gelbbrauner, in     konz.     Schwefelsäure mit     violetter    Farbe und färbt       Cellulosefasern    in gelbbraunen Tönen von       guter    Lichtechtheit. Durch Nachbehandlung  der Färbung des in saurem Medium     gekup-          ferten        Farbstoffes    mit     Kupfersalzen    werden  sattere Brauntöne erhalten.  



  <I>Beispiel:</I>  57,1 Teile des Farbstoffes aus     diazotier-          ter        4-Nitro-4'-aminostilben-2;2'-disulfonsäure     und     Salicylsäure    und<B>26</B> Teile     des        Farbstoffes     aus     diazotiertem        4-Nitro-2-aminophenol    und         2-Amino-4-ogytoluol    werden in 600 Teilen  Wasser und 8,

  0 Teilen Natronlauge von       36         Be    12-14     Stunden    bei Siedetemperatur  unter     Rückfluss        kondensiert.    Nach dem Ab  kühlen wird mit     Salzsäure        neutralisiert,    mit  Kochsalz vollends ausgefällt,     abfiltriert    und  getrocknet.  



  Die     Kupferverbindung    des     Farbstoffes     kann erhalten werden, indem man     ihn    in  3000 Teilen     Wasser    löst, bei schwach     kongo-          oder    essigsaurer     Reaktion    mit 25 Teilen       krist.        Kupfersulfat    in 100, Teilen     Wasser    ver  setzt und bei 8'0-90      10-1'2        Stunden    ver  rührt.

   Die zum     grossen    Teil ausgefallene  Kupferverbindung wird mit     Kochsalz    voll  ends ausgefällt,     abgenutscht    und in das Na  trium3alz übergeführt.



      Additional patent to main patent no. <B> 2,36583. </B> Process for the production of a metallizable dye. The subject of the present patent is a process for the production of a metalizable dye.

   The method is characterized by; that the monoazo dyes 4-nitro-4'-aminostilben-2,2'-disulphonic acid ---> salicylic acid and 4-nitro-2-aminophenol -> 2 - amino - 4 - ogytoluene are condensed with one another in alkaline solution .



  The new dye is a dark powder in the coppered state. This dissolves in water with a yellow-brown, in conc. Sulfuric acid with a violet color and dyes cellulose fibers in yellow-brown shades of good lightfastness. Subsequent treatment of the dyeing of the dye, which is coppered in an acid medium, with copper salts gives deeper brown tones.



  <I> Example: </I> 57.1 parts of the dye from diazotized 4-nitro-4'-aminostilbene-2; 2'-disulfonic acid and salicylic acid and <B> 26 </B> parts of the dye from diazotized 4-Nitro-2-aminophenol and 2-amino-4-ogytoluene are dissolved in 600 parts of water and 8,

  0 parts of sodium hydroxide solution of 36 Be condensed under reflux at the boiling point for 12-14 hours. After cooling, it is neutralized with hydrochloric acid, completely precipitated with sodium chloride, filtered off and dried.



  The copper compound of the dye can be obtained by dissolving it in 3000 parts of water, with a weak Congo or acetic acid reaction with 25 parts of crystalline. Copper sulfate in 100 parts of water sets and stirred at 8'0-90 10-1'2 hours.

   The largely precipitated copper compound is completely precipitated with table salt, suction filtered and converted into the sodium salt.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines metalli- sierbaren Farbstoffes, dadurch gekennzeich net, dass die Monoazofarbstoffe 4-Nitro-4'- aminostilben-2,2'-disulfonsäure --> Salicyl= säureund4-Nitro-2-aminophenol --> 2-Amino- 4-oxytoluol in alkalischer Lösunb mitein ander kondensiert werden. Der neue Farbstoff stellt in gekupfertem Zustand ein dunkles Pulver dar. Dieses löst. PATENT CLAIM: Process for the production of a metallizable dye, characterized in that the monoazo dyes 4-nitro-4'-aminostilbene-2,2'-disulfonic acid -> salicylic acid and 4-nitro-2-aminophenol -> 2- Amino-4-oxytoluene are condensed with one another in an alkaline solution. When coppered, the new dye is a dark powder. This dissolves. sich in Wasser mit gelbbrauner, in konz. Schwefelsä u@:e mit violetter Farbe und färbt Cellulosefasern in gelbbraunen Tönen von guter Liehtechtheit. in water with yellow-brown, in conc. Sulfur acid with violet color and dyes cellulose fibers in yellow-brown shades of good lightfastness.
CH238450D 1942-12-22 1942-12-22 Process for the production of a metallizable dye. CH238450A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH238450T 1942-12-22
CH236583T 1942-12-22

Publications (1)

Publication Number Publication Date
CH238450A true CH238450A (en) 1945-07-15

Family

ID=25728125

Family Applications (1)

Application Number Title Priority Date Filing Date
CH238450D CH238450A (en) 1942-12-22 1942-12-22 Process for the production of a metallizable dye.

Country Status (1)

Country Link
CH (1) CH238450A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE921277C (en) * 1951-04-28 1954-12-13 Ciba Geigy Process for the production of copper-containing azo dyes of the stilbene series
DE963178C (en) * 1952-12-24 1957-05-02 Sandoz Ag Process for the preparation of metal-containing polyazo dyes of the stilbene series

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE921277C (en) * 1951-04-28 1954-12-13 Ciba Geigy Process for the production of copper-containing azo dyes of the stilbene series
DE963178C (en) * 1952-12-24 1957-05-02 Sandoz Ag Process for the preparation of metal-containing polyazo dyes of the stilbene series

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