CH238445A - Process for the production of a metallizable dye. - Google Patents

Process for the production of a metallizable dye.

Info

Publication number
CH238445A
CH238445A CH238445DA CH238445A CH 238445 A CH238445 A CH 238445A CH 238445D A CH238445D A CH 238445DA CH 238445 A CH238445 A CH 238445A
Authority
CH
Switzerland
Prior art keywords
dye
acid
brown
production
metallizable
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 CH238445A publication Critical patent/CH238445A/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

  

      ansatzpatent    zum Hauptpatent Nr. 286583.    Verfahren zur Herstellung eines     metallisierbaren        Farbstoffes.       Gegenstand des vorliegenden Patentes ist ein  Verfahren zur Herstellung eines     metallisier-          baren    Farbstoffes.

   Das Verfahren ist dadurch  gekennzeichnet, dass der     Monoazofarbstoff          4-Nitro    -4"-     aminostilben-    2,2'-     disulfonsäure          --->        Salicylsäure    und die Kupferverbindung  des     Aminoazofarbstoffes        2-Amino-l-oxyben-          zol-4-sulfonsäure        ->        m-Anisidin    in alkali  scher Lösung miteinander kondensiert werden.  



  Der neue Farbstoff stellt ein braunes Pul  ver dar. Er löst sich in Wasser mit rötlich  brauner, in     conc.    Schwefelsäure     mit    violetter  Farbe und färbt     Cellulosefasern    in lichtech  ten gelbbraunen Tönen. Durch Nachbehand  lung der Färbungen mit Kupfersalzen wird  die Wasserechtheit noch verbessert.  



  <I>Beispiel:</I>  57,1 Teile des Farbstoffes aus     diazotierter          4-Nitro-4'-aminostilben-2,2'-disulfonsäure    und       Salicylsäure    und 35 Teile der Kupferverbin  dung des     Aminoazofarbstoffes    aus diazotier-         ter        2-Amino-l-oxybenzol-4-sulfonsäure    und       m-Anisidin    werden in 900 Teilen Wasser und  100 Teilen Natronlauge 36      Be    6-8 Stunden  unter     Rückfluss    zum     Sieden    erhitzt. Nach dem  Abkühlen wird mit Salzsäure neutralisiert,  mit Kochsalz vollends ausgefällt,     abfiltriert     und getrocknet.



      Approach patent to main patent no. 286583. Process for the production of a metallizable dye. The subject matter of the present patent is a process for the production of a metallizable dye.

   The process is characterized in that the monoazo dye 4-nitro -4 "- aminostilbene-2,2'-disulfonic acid ---> salicylic acid and the copper compound of the aminoazo dye 2-amino-1-oxybenzene-4-sulfonic acid -> m -Anisidine be condensed with one another in an alkaline solution.



  The new dye is a brown powder. It dissolves in water with a reddish brown, in conc. Sulfuric acid with a violet color and dyes cellulose fibers in lightfast yellow-brown tones. After-treating the dyeings with copper salts, the waterfastness is further improved.



  <I> Example: </I> 57.1 parts of the dye from diazotized 4-nitro-4'-aminostilbene-2,2'-disulfonic acid and salicylic acid and 35 parts of the copper compound of the aminoazo dye from diazotized 2-amino l-oxybenzene-4-sulfonic acid and m-anisidine are refluxed for 6-8 hours in 900 parts of water and 100 parts of sodium hydroxide solution 36 Be. After cooling, it is neutralized with hydrochloric acid, completely precipitated with sodium chloride, filtered off and dried.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines metalli- sierbaren. Farbstoffes, dadurch gekennzeich- net, dass der Monoazofarbstoff 4-Nitro-4'- aminostilben-2, PATENT CLAIM: Process for producing a metallizable. Dye, characterized in that the monoazo dye 4-nitro-4'-aminostilbene-2, 2'-disulfonsäure -> Salicyl- säure und die Kupferverbindung des Amino- azofarbstoffes 2-Amino-l-oxybenzol-4-sulfon- säure -> m-Anisidin in alkalischer Lösung miteinander kondensiert werden. Der neue Farbstoff stellt ein braunes Pul ver dar. Er löst sich in Wasser mit rötlich brauner, in conc. Schwefelsäure mit violetter Farbe und färbt Cellulosefasern in lichtech ten gelbbraunen Tönen. 2'-disulfonic acid -> salicylic acid and the copper compound of the amino azo dye 2-amino-1-oxybenzene-4-sulfonic acid -> m-anisidine are condensed with one another in an alkaline solution. The new dye is a brown powder. It dissolves in water with a reddish brown, in conc. Sulfuric acid with a violet color and dyes cellulose fibers in lightfast yellow-brown tones.
CH238445D 1942-12-22 1942-12-22 Process for the production of a metallizable dye. CH238445A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH236583T 1942-12-22
CH238445T 1942-12-22

Publications (1)

Publication Number Publication Date
CH238445A true CH238445A (en) 1945-07-15

Family

ID=25728120

Family Applications (1)

Application Number Title Priority Date Filing Date
CH238445D CH238445A (en) 1942-12-22 1942-12-22 Process for the production of a metallizable dye.

Country Status (1)

Country Link
CH (1) CH238445A (en)

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