CH228825A - Process for the preparation of a dye of the stilbene series. - Google Patents

Process for the preparation of a dye of the stilbene series.

Info

Publication number
CH228825A
CH228825A CH228825DA CH228825A CH 228825 A CH228825 A CH 228825A CH 228825D A CH228825D A CH 228825DA CH 228825 A CH228825 A CH 228825A
Authority
CH
Switzerland
Prior art keywords
dye
orange
brownish
parts
preparation
Prior art date
Application number
Other languages
German (de)
Inventor
Gesellschaft Fuer Chemis Basel
Original Assignee
Chem Ind Basel
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 Chem Ind Basel filed Critical Chem Ind Basel
Publication of CH228825A publication Critical patent/CH228825A/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)
  • Detergent Compositions (AREA)
  • Coloring Foods And Improving Nutritive Qualities (AREA)

Description

  

      Zusatzpatent    zum     Hauptpatent    Nr. 217235.    Verfahren     zur        Herstellung    eines Farbstoffes der     Stilbenreihe.       Es     wurde        .gefunden,    dass     lein    neuer     Parb-          stoff    der     Stillbenreähe        hergestellt    werden  kann,     wenn.    man     den    Farbstoff,     der    durch         vorsichtige        Reduktion.    von     4,

  4'-Dinitrostilben-          2,2'-#dä#sulfons#äure        unter    Verknüpfung     zweier          Moleküle    erhalten     wird,    mit 1 Mal des Farb-  
EMI0001.0024     
  
    NHz <SEP> stoffes <SEP> der <SEP> F9TSnel
<tb>  I
<tb>  HO  <B><I>)-N</I></B>- <SEP> N-O-N <SEP> = <SEP> N-O-OH
<tb>  ÖH <SEP> COOH       kondensiert.

    Der     neue    Farbstoff     stellt    in     trockenem          zustande    ein     dunkles,    grün     bronzierendes     Pulver dar, das     sich.        in    konzentrierter Schwe  felsäure mit     blanuer,

      in     Wasser    mit     bräunlich-          orangem        Farbe    löst und     Baumwolle        aue    glau-         bersalzhaltigem    Bade in     braunstichig        oiran-          gen    Tönen färbt,     die        beim        Behandeln        mit          KurpifensaIzen    noch     etwas    röter     und    .sehr gut       was,

  cheicht        werden.     



       Der        dem        Verfahren    als     Ausgangsstoff     dienende     Stilbenfambstoff        ist        als        ein        Gemisch     der     Produkte    der     Formeln     
EMI0001.0064     
    aufzufassen.

        Die Kondensation kann beispielsweise       urch    Erhitzen der Komponenten     in        alka.-          12s:chem,    vorzugsweise     ätza.lkalische.m    Me  dium, offen     :oder    unter Druck, durchgeführt  werden.  



       Beispiel:     6     Teile    -des     Farbstoffes,    der erhalten wird,  wenn man 45 Teile     4,4'-dinitrostilben-2,2'-          di@sulfonsaures    Natrium mit 7 Teilen     Trau-          benzuckes    und 60 Teilen 30     %        i:ger    Natron  lauge, in     -ethva    400 Teilen Wasser     gelöst,    bei  70     bis    80  reduziert und :

  den Farbstoff in     be-          kannter        Weise    durch Neutralisieren und Zu  gabe von     Natrium.chl.ori.d    abscheidet und der  durch Kuppeln in     sodaalkalisther    Lösung von  2,5 Teilen     diazotiertem        4-Amino-4'-oxy-3'-          carboxy-1,1'-az:o:

  b,enzo,1    mit<B>1,3</B> Teilen 1-         Amino-2,4-d-toxybe@nzol    biergestellte und ab  geschiedene     Farbstoff    werden in     einem    Ge  misch von 100     Teilen        -Wasser    und 16 Tei  len 30     öi.ger        Natronlauge    unter     Rückfluss-          kühlun.g        gekoeht.    Nach dem Erkalten wird       abfiltriert    und der Farbstoff     zwecks        1R-ini-          gung    aus verdünnter Lauge umgefällt.



      Additional patent to main patent No. 217235. Process for the production of a dye of the stilbene series. It has been found that a new parboil for breastfeeding can be produced if. one the dye made by careful reduction. of 4,

  4'-Dinitrostilbene 2,2 '- # dä # sulfonic # acid is obtained by linking two molecules, with 1 time of the color
EMI0001.0024
  
    NHz <SEP> substance <SEP> the <SEP> F9TSnel
<tb> I.
<tb> HO <B><I>)-N</I> </B> - <SEP> N-O-N <SEP> = <SEP> N-O-OH
<tb> ÖH <SEP> COOH condensed.

    When dry, the new dye is a dark, green bronzing powder that is. in concentrated sulfuric acid with blanuer,

      Dissolves in water with a brownish-orange color and stains cotton on a bath containing gelatinous salt in brownish-orange tones, which when treated with KurpifensaIzen a little redder and.

  be cleaned.



       The stilbene fiber used as starting material for the process is available as a mixture of the products of the formulas
EMI0001.0064
    understand.

        The condensation can be carried out, for example, by heating the components in alkali-chemical, preferably caustic-alkaline, medium, openly or under pressure.



       Example: 6 parts of the dye which is obtained when 45 parts of 4,4'-dinitrostilben-2,2'-di @ sulfonic acid sodium with 7 parts of grape sugar and 60 parts of 30% i: ger sodium hydroxide solution are added in -ethva 400 parts of water dissolved, reduced at 70 to 80 and:

  separates the dye in a known manner by neutralizing and adding sodium.chl.ori.d and the diazotized 4-amino-4'-oxy-3'-carboxy-1, by coupling in a soda-alkaline solution of 2.5 parts 1'-az: o:

  b, enzo, 1 with <B> 1.3 </B> parts of 1-amino-2,4-d-toxybe @ nzol beer-produced and separated dye are mixed in a mixture of 100 parts of water and 16 parts of 30 A lot of sodium hydroxide solution is boiled under reflux cooling. After cooling, it is filtered off and the dye is reprecipitated from dilute lye for 1R cleaning.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung .eines Farb stoffes der Stilbenreihe, dadurch gekennzeich net, dass. man 1 Mol des Farbstoiffes, der durch vorsichtige Reduktion von 4,4'-Dinitro:- stil:b: PATENT CLAIM: Process for the production of a dye of the stilbene series, characterized in that 1 mol of the dye obtained by carefully reducing 4,4'-dinitro: - style: b: en-2,2'-disu fonsäure unter Verknüpfung zweier Moleküle erhalten wird und der, ein Gemisch der folgenden Verbindungen dar stellt, EMI0002.0060 mit 1 Mol,des Farbstoffes der Formel EMI0002.0062 kondensiert. Der neue Farbstoff stellt in trockenem Zustande ein dunkles, grün bronzierendes Pulver dar, en-2,2'-disulfonic acid is obtained by linking two molecules and which is a mixture of the following compounds, EMI0002.0060 with 1 mole, of the dye of the formula EMI0002.0062 condensed. When dry, the new dye is a dark, green bronzing powder, .das .sich in konzentrierter Schwe felsäure mit blauer, in Wasser mit brä.unlich- oranger Farbe löst und Baumwolle aus glau- bersa.lzhaltigem Badie in bra.unstichig orangen Tönen färbt, die beim Behandeln mit Nu @pfer- #a.lzen noch etwas röter und sehr gut wasch- ccht werden. .that dissolves in concentrated sulfuric acid with a blue color, in water with a brownish-orange-orange color and turns cotton from badie containing glauber in a brownish-orange tint, which when treated with pork stick can be a little redder and washed very well.
CH228825D 1940-07-06 1940-07-06 Process for the preparation of a dye of the stilbene series. CH228825A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH228825T 1940-07-06
CH217235T 1941-10-15

Publications (1)

Publication Number Publication Date
CH228825A true CH228825A (en) 1943-09-15

Family

ID=25725972

Family Applications (1)

Application Number Title Priority Date Filing Date
CH228825D CH228825A (en) 1940-07-06 1940-07-06 Process for the preparation of a dye of the stilbene series.

Country Status (1)

Country Link
CH (1) CH228825A (en)

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