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CH234512A - Process for the preparation of a related dye. - Google Patents

Process for the preparation of a related dye.

Info

Publication number
CH234512A
CH234512A CH234512DA CH234512A CH 234512 A CH234512 A CH 234512A CH 234512D A CH234512D A CH 234512DA CH 234512 A CH234512 A CH 234512A
Authority
CH
Switzerland
Prior art keywords
dye
acid
preparation
converted
yellow color
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 CH234512A publication Critical patent/CH234512A/en

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09BORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B43/00Preparation of azo dyes from other azo compounds
    • C09B43/08Preparation of azo dyes from other azo compounds by reduction

Landscapes

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

Description

  

      Zusatzpatent    zum     Hauptpatent    Nr. 219932.    Verfahren zur Herstellung eines     beizenziehenden        Farbstoffes.            Geigenstand    des     vorliegenden    Zusatz  patentes     ist    ein Verfahren zur     Damstellung          eines        bemzenzieh        enden    Farbstoffes, dadurch       gekennzeichnet,        @dass        .diazotierte        2-Amino-3-          ni'trobenzol-l-carbon,

  s@ä.ure    mit     2-Oxynaphthia-          lin-4-sulfonsäure    gekuppelt und der     Azofarb-          stoff    durch Reduktion in das     Triazolderivat     übergeführt wird.

   Der neue     Farbstaff,    ein       grängtichig    gelbes Pulver,     ist    in     Wasser        mit          gelber,    in     konzentrierter    Schwefelsäure mit  schwacher     grünlichgelber    Farbe     löslich;

      er  färbt     'Wolle    aus saurem     Bad    in     gelblichen     Tönen, die beim     Nachchromieren        intensiver     werden und gute bis     hervorragende        Echt-          heitseigenschaften        besitzen.     



       Beispiel:     23 Teile     des        Farbstoffes        aus,diazotierter          3-Nitro-2-aminob,enzoesäure    und     2-Naphthol-          4-sulfonsäure    werden in 200     Teilen    heissem       Wasser    gelöst     und    in die     rote        Lösung        inner-          halb    von 15     Minuten        unter        Rühmen,

      bei 80  bis 100  20 Teile einer     Ammoniumsulfid-          lösung        zugetropft,    die 1     Grammalom.        (NIQ2S     in 300 g Lösung     enthält,    wobei unter     Aus-          scheidung    von     Schwefel    eine gelbe     Lösung          entsteht.    Man klärt, setzt 10 Teile Natron-    lauge von 36      Be    zu und streut innert 30 Mi  nuten 12,

  5 Teile     Natriumhyposulfit    von 85  Gehalt     portionenweise    unter     Rühren    bei 70  bis 80  ein. Man hält noch     eine    Stunde bei  80 , versetzt     dann        mit    35 Teilen 30 %     iger          Salzsäure,    kocht kurz auf und     kühlt    ab. Der  Farbstoff .scheidet sich als     fast        farbloses    Pul  ver     aus,        das    nach     Odem        Erkalten        abgesogen     und getrocknet wird.



      Additional patent to main patent no. 219932. Process for the production of a co-licensing dye. The violin status of the present additional patent is a process for the production of a decorative dye, characterized in that .diazotized 2-amino-3-ni'trobenzene-l-carbon,

  s@ä.ure is coupled with 2-oxynaphthialine-4-sulfonic acid and the azo dye is converted into the triazole derivative by reduction.

   The new coloring, a yellowish yellow powder, is soluble in water with a yellow color, in concentrated sulfuric acid with a pale greenish-yellow color;

      it dyes wool from an acid bath in yellowish tones, which become more intensive when chromium plating and have good to excellent fastness properties.



       Example: 23 parts of the dye from diazotized 3-nitro-2-aminob, enzoic acid and 2-naphthol-4-sulfonic acid are dissolved in 200 parts of hot water and poured into the red solution within 15 minutes with stirring,

      at 80 to 100 20 parts of an ammonium sulfide solution are added dropwise, the 1 gramalom. (NIQ2S contains 300 g of solution, whereby a yellow solution is formed with the excretion of sulfur. It is clarified, 10 parts of 36 Be caustic soda are added and sprinkled within 30 minutes 12,

  5 parts of sodium hyposulfite of 85 content in portions with stirring at 70 to 80. The temperature is kept at 80 for another hour, 35 parts of 30% strength hydrochloric acid are then added, the mixture is briefly boiled and then cooled. The dye separates out as an almost colorless powder, which is sucked off and dried after the breath has cooled down.

 

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines beizen ziehenden Farbstoffes, dadurch gekennzeich- net, @dass diazotierte 2-Aniino-3-nitrobenzol- 1-carboäure mit 2-Oxynraphrbhalnn-4-su-Ifon- säure,gekuppelt und der Azofarbistoff durch Eieduktion in das T'riazol@derivat übergeführt wird. PATENT CLAIM: Process for the preparation of a pickling dye, characterized in that diazotized 2-aniino-3-nitrobenzene-1-carboic acid is coupled with 2-oxynraphrbhalnn-4-su-ifonic acid and the azo dye is converted into the T'riazol @ derivative is converted. Der neue Farbstoff, ein .grünstichig gel bes Pulver, ist in Wasser mit gelber, in kon- zentrierter Schwefelsäure mit schwacher grünlichgelber Farbe löslich; The new dye, a greenish yellow powder, is soluble in water with a yellow color, and in concentrated sulfuric acid with a pale greenish-yellow color; er färbt Wolle aus saurem Bad in gelblichen Tönen, .die beim Naah;chromieren intensiver werden und ;gute bis- hervorragende Echtheitseigenschaf- ten besitzen. it dyes wool from an acid bath in yellowish tones, which become more intense when it is treated with chromium and which have good to excellent fastness properties.
CH234512D 1941-10-17 1941-10-17 Process for the preparation of a related dye. CH234512A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH234512T 1941-10-17
CH219932T 1941-10-17

Publications (1)

Publication Number Publication Date
CH234512A true CH234512A (en) 1944-09-30

Family

ID=25726374

Family Applications (1)

Application Number Title Priority Date Filing Date
CH234512D CH234512A (en) 1941-10-17 1941-10-17 Process for the preparation of a related dye.

Country Status (1)

Country Link
CH (1) CH234512A (en)

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