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CH179448A - Process for the preparation of a new trisazo dye. - Google Patents

Process for the preparation of a new trisazo dye.

Info

Publication number
CH179448A
CH179448A CH179448DA CH179448A CH 179448 A CH179448 A CH 179448A CH 179448D A CH179448D A CH 179448DA CH 179448 A CH179448 A CH 179448A
Authority
CH
Switzerland
Prior art keywords
sulfonic acid
dye
new
aminonaphthalene
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 CH179448A publication Critical patent/CH179448A/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
    • C09B31/00—Disazo and polyazo dyes of the type A->B->C, A->B->C->D, or the like, prepared by diazotising and coupling
    • C09B31/02—Disazo dyes
    • C09B31/08—Disazo dyes from a coupling component "C" containing directive hydroxyl and amino groups

Landscapes

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

Description

  

      Verfahren    zur Herstellung eines neuen     Trisazofarbstoffes.       Es wurde gefunden, dass man einen neuen       Trisazofarbstoff    erhält, wenn man den     Azo-          farbstoff,    der selbst erhalten wird durch Ver  einigen von     Diazobenzol-3-sulfonsäure    mit dem  technischen Gemisch der     1-Aminonaphthalin-6-          und        1-Aminonaphthalin-7-sulforisäure        diazo-          tiert,

      mit     1-Amino-5-oxynaphthalim-7-sulfon-          säure    in saurem Medium vereinigt und den  so erhaltenen     Disazofarbstoff    abermals     dia-          zotiert    und in alkalischem Medium mit der       2-Phenylamirro-5-oxynaphthalin-7-sulfonsäure     vereinigt. Der neue     Farbstoff    stellt ein bronze  glänzendes Pulver dar, das auf Baumwolle  direkt mit grünblauer Nuance von hervor  ragender Lichtechtheit zieht.  



  <I>Beispiel</I>  17,3 Teile     1-Amirrobenzol-3-sulfonsäure     werden     diazotiert    und mit 24,5 Teilen eines  Gemisches von     1-Aminonaphthalin-6-    und       1-Aminonaphthalin-7-sulfonsäure    gekuppelt.

    Man     diazotiert    weiter und kuppelt mit 26,1    Teilen     1-amino-5-oxynaphthalin-7-sulfonsau-          rem    Natrium in Gegenwart von     Natriumacetat;     hierauf wird weiter     diazotiert    mit Salzsäure  und 6,9 Teilen     Natriumnitrit    und die     Diazo-          verbindung    bei 0  in eine wässerige Lösung  von 31,5 Teilen     2-Phenylamino-5-oxynaph-          thalin-7-sulfonsäure    in Gegenwart von über  schüssigem     Natriumcarbonat    eingetragen.

       Der     fertig gebildete Farbstoff wird in üblicher  Weise isoliert und eventuell zwecks weiterer  Reinigung nochmals umgelöst.



      Process for the preparation of a new trisazo dye. It has been found that a new trisazo dye is obtained if the azo dye, which is itself obtained by Ver some of diazobenzene-3-sulfonic acid with the technical mixture of 1-aminonaphthalene-6- and 1-aminonaphthalene-7-sulforic acid diacetated,

      combined with 1-amino-5-oxynaphthalim-7-sulfonic acid in an acidic medium and the disazo dye thus obtained is again diazotized and combined with 2-phenylamirro-5-oxynaphthalene-7-sulfonic acid in an alkaline medium. The new dye is a shiny bronze powder that draws directly onto cotton with a green-blue shade of excellent lightfastness.



  <I> Example </I> 17.3 parts of 1-amirrobenzene-3-sulfonic acid are diazotized and coupled with 24.5 parts of a mixture of 1-aminonaphthalene-6 and 1-aminonaphthalene-7-sulfonic acid.

    The diazotization is continued and the coupling is carried out with 26.1 parts of 1-amino-5-oxynaphthalene-7-sulfonic acid rem sodium in the presence of sodium acetate; it is then diazotized further with hydrochloric acid and 6.9 parts of sodium nitrite and the diazo compound is added at 0 to an aqueous solution of 31.5 parts of 2-phenylamino-5-oxynaphthalene-7-sulfonic acid in the presence of excess sodium carbonate.

       The finished dye is isolated in the usual way and possibly redissolved again for the purpose of further purification.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines neuen Trisazofarbstoffes, dadurch gekennzeichnet, dass man den Azofarbstoff, der selbst erhalten wird durch Vereinigen von Diazobenzol-3- sulfonsäure mit dem technischen Gemisch der Aminonaphthalin-6- und 1-Aminonaphthalin- 7-sulfonsäure diazotiert, PATENT CLAIM: Process for the production of a new trisazo dye, characterized in that the azo dye, which is itself obtained by combining diazobenzene-3-sulfonic acid with the technical mixture of aminonaphthalene-6 and 1-aminonaphthalene-7-sulfonic acid, is diazotized, mit 1-Amino-5-oxy- naphthalin-7-sulfonsäure in saurem Medium vereinigt und den so erhaltenen Disazofarb- steif abermals dianotiert und in alkalischem Medium mit der 2-Phenyla:nino-5-ogynaph- thalin-7-sulfonsäure vereinigt. Der neue Farb- stoff stellt ein bronzeglänzendes Pulver dar, das auf Baumwolle direkt mit grünblauer Nuance von hervorragender Lichtechtheit zieht. combined with 1-amino-5-oxynaphthalene-7-sulfonic acid in acidic medium and the disazo color-stiff thus obtained is again dianotized and combined with 2-phenyla: nino-5-ogynaphthalene-7-sulfonic acid in an alkaline medium. The new dye is a shiny bronze powder that draws directly onto cotton with a green-blue shade of excellent lightfastness.
CH179448D 1934-07-26 1934-07-26 Process for the preparation of a new trisazo dye. CH179448A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH179448T 1934-07-26

Publications (1)

Publication Number Publication Date
CH179448A true CH179448A (en) 1935-09-15

Family

ID=4429267

Family Applications (1)

Application Number Title Priority Date Filing Date
CH179448D CH179448A (en) 1934-07-26 1934-07-26 Process for the preparation of a new trisazo dye.

Country Status (1)

Country Link
CH (1) CH179448A (en)

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