CH238623A - Process for the production of a new azo dye. - Google Patents

Process for the production of a new azo dye.

Info

Publication number
CH238623A
CH238623A CH238623DA CH238623A CH 238623 A CH238623 A CH 238623A CH 238623D A CH238623D A CH 238623DA CH 238623 A CH238623 A CH 238623A
Authority
CH
Switzerland
Prior art keywords
production
azo dye
new azo
dye
parts
Prior art date
Application number
Other languages
German (de)
Inventor
Aktiengesellschaft Ciba
Original Assignee
Ciba 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 Ciba Geigy filed Critical Ciba Geigy
Publication of CH238623A publication Critical patent/CH238623A/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
    • C09B29/00Monoazo dyes prepared by diazotising and coupling
    • C09B29/06Monoazo dyes prepared by diazotising and coupling from coupling components containing amino as the only directing group
    • C09B29/08Amino benzenes
    • C09B29/0805Amino benzenes free of acid groups
    • C09B29/0807Amino benzenes free of acid groups characterised by the amino group
    • C09B29/0809Amino benzenes free of acid groups characterised by the amino group substituted amino group
    • C09B29/0811Amino benzenes free of acid groups characterised by the amino group substituted amino group further substituted alkylamino, alkenylamino, alkynylamino, cycloalkylamino aralkylamino or arylamino
    • C09B29/0813Amino benzenes free of acid groups characterised by the amino group substituted amino group further substituted alkylamino, alkenylamino, alkynylamino, cycloalkylamino aralkylamino or arylamino substituted by OH, O-C(=X)-R, O-C(=X)-X-R, O-R (X being O,S,NR; R being hydrocarbonyl)

Landscapes

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

Description

  

      Zusatzpatent    zum     Hauptpatent    Nr. 236997.         Verfahren    zur Herstellung eines neuen     Azofarbstoffes.       Es wurde gefunden, dass man einen neuen       Azofarbstoff    erhält, wenn man die     Diazover-          bind'ung    des     3,5-Dinitroaminobenzols    mit dem  sauren     Maleinsäure-(phenyl-methyl-amino)-          äthylester    vereinigt.  



  Der so     erhaltene    Farbstoff bildet in  trockenem Zustande ein rotes Pulver, das sieh  in heissem Wasser mit     roter    Farbe löst und  das     Acetatkunsts-eide    aus     wässeriger    Lösung  in echten gelben Tönen färbt.  



       Beispiel:     18,3 Teile     3,5-Dinitroaminobenzol    werden  in 150 Teilen     30%iger        Salzsäure    durch Er  wärmen gelöst. Man kühlt diese Lösung durch  Zugabe von Eis und versetzt dann diese kalte  Suspension unter     Rühren    mit einer     Lösung     von 7 Teilen     Natriumnitrit        in        etwa    25 Teilen  Wasser.  



  Man     bereitet    nun eine Lösung von 26,6 Tei  len des     Ammoniumsalzes    des sauren     Malein-          säure    -     (phenyl    -     methyl    -     amino)    -     äthylesters     (dargestellt durch Zusammenschmelzen von  15,1 Teilen     Xethyl-ogäthyl-aminobenzol    und  9,8 Teilen     Maleinsäureanhydrid    bei 80-90     und Neutralisieren mit     Ammoniak).    Diese ;

    Lösung versetzt man mit der     Diazolösung     und führt die     Farbstoffbildung    durch Zugabe  von etwa 200 Teilen     Natriumacetat    zu Ende.  Man filtriert dien Farbstoff ab und wäscht  ihn     neutral.    Der Farbstoff wird nun in etwa     i     200 Teilen Wasser     angerührt    und mit der       nötigen    Menge Ammoniak     in    das Ammonium  salz     übergeführt,    gegebenenfalls nach Zusatz  von     Natriumchlorid        abfiltriert,    gewaschen  und getrocknet.



      Additional patent to main patent No. 236997. Process for the production of a new azo dye. It has been found that a new azo dye is obtained if the diazo compound of 3,5-dinitroaminobenzene is combined with the acidic maleic acid (phenylmethylamino) ethyl ester.



  The dye thus obtained forms a red powder when dry, which dissolves in hot water with a red color and colors the acetate artificial silk from aqueous solution in true yellow tones.



       Example: 18.3 parts of 3,5-dinitroaminobenzene are dissolved in 150 parts of 30% hydrochloric acid by heating. This solution is cooled by adding ice, and a solution of 7 parts of sodium nitrite in about 25 parts of water is then added to this cold suspension, while stirring.



  A solution of 26.6 parts of the ammonium salt of the acidic maleic acid (phenyl-methyl-amino) -ethyl ester is now prepared (represented by melting together 15.1 parts of xethyl-ogäthyl-aminobenzene and 9.8 parts of maleic anhydride at 80 -90 and neutralizing with ammonia). These ;

    The solution is mixed with the diazo solution and the dye formation is completed by adding about 200 parts of sodium acetate. The dye is filtered off and washed neutral. The dyestuff is then stirred in about i 200 parts of water and converted into the ammonium salt with the necessary amount of ammonia, filtered off, washed and dried, if necessary after the addition of sodium chloride.

 

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines neuen Azofarbstoffes, dadurch gekennzeichnet, dass man die Diazoverbindung des 3,5-Dinitro- aminobenzols mit dem sauren Maleinsäure- (phenyl-methyl-amino)-äthylesiter vereinigt. PATENT CLAIM: Process for the production of a new azo dye, characterized in that the diazo compound of 3,5-dinitroaminobenzene is combined with the acidic maleic acid (phenyl-methyl-amino) -äthylesiter. Der so erhaltene Farbstoff bildet in trockenem Zustande ein rotes Pulver, das sich in heissem Wasser mit roter Farbe löst und das Acetatkunstseide aus wässeriger Lösung in echten gelben Tönen färbt. The dye thus obtained forms a red powder in the dry state, which dissolves in hot water with a red color and dyes the acetate artificial silk from aqueous solution in real yellow tones.
CH238623D 1942-08-10 1942-08-10 Process for the production of a new azo dye. CH238623A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH238623T 1942-08-10
CH236997T 1942-08-10

Publications (1)

Publication Number Publication Date
CH238623A true CH238623A (en) 1945-07-31

Family

ID=25728214

Family Applications (1)

Application Number Title Priority Date Filing Date
CH238623D CH238623A (en) 1942-08-10 1942-08-10 Process for the production of a new azo dye.

Country Status (1)

Country Link
CH (1) CH238623A (en)

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