CH228826A - 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
CH228826A
CH228826A CH228826DA CH228826A CH 228826 A CH228826 A CH 228826A CH 228826D A CH228826D A CH 228826DA CH 228826 A CH228826 A CH 228826A
Authority
CH
Switzerland
Prior art keywords
dye
mole
preparation
parts
series
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 CH228826A publication Critical patent/CH228826A/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
    • C09B56/00Azo dyes containing other chromophoric systems
    • C09B56/04Stilbene-azo dyes

Description

  

      Zusatzpatent    zum Hauptpatent Nr. 217235.    Verfahren zur Herstellung eines Farbstoffes der     Stilbenreihe.       Es     wurde    gefunden, dass ein neuer Farb  stoff der     Stilbenreihe        hergestellt    werden  kann, wenn man den Farbstoff, der durch         vorsichtige        Reduktion    von     4,4'-Dinitrastil-          ben    -     2,2'-@dis@ulfo:nsö,une        unter        Verknüpfung          zweier    Moleküle     :

  erhalten    wird, mit 1.     142o1    des       Farbstoffes    der Formel  
EMI0001.0017     
         kondensiert.     Der neue Farbstoff     stellt    in trockenem       Zustande    ein :

  dunkles Pulver dar, das sich in       konzentrierter        Schwefelsäure    mit blauer, in       Wasser    mit oranger Farbe löst und Baum  walle aus     gl@aubersalzhaltigem    Bade in oran-    gen Tönen färbt, die     beim        Behandeln    mit       Kupfersalzen    noch etwas röter und     siehr    gut       waschecht    werden.  



       Der,dem    Verfahren als Ausgangsstoff die  nende     Stilhenfarbsto:ff    ist als ein     Gemisch     der Produkte der     Formeln     
EMI0001.0034     
    und    
EMI0002.0001     
         aufzufassen.     Die     Kondensation    kann     beispielswei,e          diurch    Erhitzen der Komponenten in     alka.li-          schem,        vorzubswei.se        ätzalka.lischem    Medium,  offen oder     unter        Druck,        durchgeführt    werden.

           Beispiel:     6     Teile    des Farbstoffes, der erhalten wird,  wenn man 45     Teile        4,4'-di.nitrostilben-2,2'-,di-          sullfonsaures    Natrium mit 7     Teilten    Trauben  zucker und 60     Teilen        30%iger    Natronlauge,  in etwa 400     Teilen        Wasser        gelöst,    bei 70 bis  80  reduziert und den Farbstoff in bekannter  Weise durch     Neutralisieren    und Zugabe, von       Natriumchlarid    abscheidet und 5,6 Teile     de:

  .          Natriwmsalzes    des     Farbstoffes    aus     dia.zotier-          ter    4-Amino-4'-oxy-1,1'-azobenzo:l-3'-carlron-    säure und     1-(3'-Amino-5'-carboxy-6'-o@xyben-          zol)    - 3 -     methyl    - 5 -     py        ra.zolon        (sodaalkalm"ahe     Kupplung)     werden    in 100 Teilen heissem  Wasser gelöst und nach     Zugabe    von 16 Tei  len 30 %     iger        Natronlau-e    20 Stunden unter       Rückflusskühlun--    bekocht.

   Man lässt     eAal-          ton,    filtriert den     ausgeschiedenen    Farbstoff  ab und     18:5t    ihn     aus    verdünnter     Natron-          lauge    um.



      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 dye of the stilbene series can be produced if the dye, which is obtained by carefully reducing 4,4'-dinitrastilbene - 2,2 '- @ dis @ ulfo: nsö, une by linking two Molecules:

  is obtained with 1. 142o1 of the dye of the formula
EMI0001.0017
         condensed. The new dye sets in the dry state:

  dark powder, which dissolves in concentrated sulfuric acid with blue color, in water with orange color and colors tree walls from baths containing gl @ oversalt in orange tones, which when treated with copper salts become a little redder and are very washable.



       The stilhene dyestuff used in the process as starting material is available as a mixture of the products of the formulas
EMI0001.0034
    and
EMI0002.0001
         understand. The condensation can be carried out, for example, by heating the components in an alkaline, possibly caustic, medium, open or under pressure.

           Example: 6 parts of the dye which is obtained if 45 parts of 4,4'-di.nitrostilben-2,2 '-, di-sulphonic acid sodium with 7 parts of grape sugar and 60 parts of 30% sodium hydroxide solution are added in about 400 Parts of water dissolved, reduced at 70 to 80 and the dye in a known manner by neutralizing and adding, sodium chloride is separated and 5.6 parts de:

  . Sodium hot salt of the dye from dia.zotier- ter 4-amino-4'-oxy-1,1'-azobenzo: l-3'-carboxylic acid and 1- (3'-amino-5'-carboxy-6'- o @ xyben- zol) - 3 - methyl - 5 - py ra.zolon (sodaalkalm "ahe coupling) are dissolved in 100 parts of hot water and, after adding 16 parts of 30% sodium hydroxide, boiled under reflux for 20 hours .

   Aaltone is left in, the precipitated dye is filtered off and it is converted 18: 5 from dilute sodium hydroxide solution.

 

Claims (1)

PATEN TAN SPRUCI3 Verfahren zur Herstellung eines Farb- stoffes der Stüben.reihe, dadurch gekenn- zei: PATEN TAN SPRUCI3 Process for the production of a dye from the Stüben series, characterized by: chnet, d,ass man 1 Mol des Farbstoffes, der durch vorsichtige Reduktion von 4,4'-Dinitro- ti@ben-2,2'-disul@fon,säui@e unter Ve.rhnüpfunä zweier Moleküle erhalten wird und ,der ein Gemisch der folgenden Verbindungen da.r- -tellt, chnet, d, ass one mole of the dye which is obtained by careful reduction of 4,4'-dinitro-ti @ ben-2,2'-disul @ fon, säui @ e by combining two molecules and, the a mixture of the following compounds da.r- represents, EMI0002.0070 mit 1 Mol des Farbstoffes der Formel EMI0002.0072 kondensiert. Der neue Farbstoff stellt in trockenem Zustande ein dunkles Pulver dar, das sich in konzentrierter Schwefelisäur@e mit blauer, in Wasser mit oma.nger Farbe ltis.t und Baum- ,volle aus .bltaubersalzhalti"em Bade in oran- gen Tönen färbt, EMI0002.0070 with 1 mole of the dye of the formula EMI0002.0072 condensed. When dry, the new dye is a dark powder which, in concentrated sulfuric acid, turns blue, in water with a oma-long color, and tree-filled baths containing leaf salt, in orange tones. die beim Behandeln mit Kupfersalzen noch etwas röter und sehr gut waschecht werden. which become a little redder when treated with copper salts and are very washable.
CH228826D 1940-07-06 1940-07-06 Process for the preparation of a dye of the stilbene series. CH228826A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH228826T 1940-07-06
CH217235T 1941-10-15

Publications (1)

Publication Number Publication Date
CH228826A true CH228826A (en) 1943-09-15

Family

ID=25725973

Family Applications (1)

Application Number Title Priority Date Filing Date
CH228826D CH228826A (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) CH228826A (en)

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