CH252289A - Process for the preparation of a polyazo dye. - Google Patents

Process for the preparation of a polyazo dye.

Info

Publication number
CH252289A
CH252289A CH252289DA CH252289A CH 252289 A CH252289 A CH 252289A CH 252289D A CH252289D A CH 252289DA CH 252289 A CH252289 A CH 252289A
Authority
CH
Switzerland
Prior art keywords
benzene
mol
dye
oxy
diamino
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 CH252289A publication Critical patent/CH252289A/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
    • C09B35/00—Disazo and polyazo dyes of the type A<-D->B prepared by diazotising and coupling
    • C09B35/38—Trisazo dyes ot the type
    • C09B35/40—Trisazo dyes ot the type the component K being a dihydroxy or polyhydroxy compound

Landscapes

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

Description

  

  <B>Zusatzpatent</B>     zum    Hauptpatent Nr. 246985.    Verfahren zur Herstellung     eines        Polyazofarbstoffes.       Gegenstand vorliegenden Patentes ist ein  Verfahren zur     Herstellung        eines        Polyazo-          farbstoffes.    Das Verfahren ist dadurch ge  kennzeichnet, dass man 'die     diazotierte        Amino-          azoverbindung        4-Amino-naphthyl-1,1'-azo-4'-          oxy-benzol-3'-carbonsäure    in alkalischem Me  dium mit dem     Disazofarbstoff    vereinigt,

   der  erhältlich ist durch Kuppeln von 1     Mol          tetrazotierter        1-Oxy-2,6-diamino-benzol-4-sul-          fonsäure    einerseits mit 1     Mol        1,3-Diamino-          benzol    und anderseits     mit    1     Mol        Resorcin.     



  Der erhaltene neue     Polyazofarbstoff        ,stellt     ein dunkles Pulver dar, das sich in Wasser  mit brauner und in konzentrierter Schwefel  säure mit     schmutzig    graublauer Farbe löst.  Baumwolle und Fasern aus regenerierter       Cellulose    werden in     dunkelbraunen    Tönen an  gefärbt. Durch Nachbehandlung mit Kupfer  sulfat werden Nass- und Lichtechtheit erheb  lich verbessert.  



  <I>Beispiel:</I>  20,4 Teile     1-Oxy-2,6=diamino-benzol-4-sul-          fonsäure    werden in salzsaurer Lösung mit       132,8    Teilen     Natriumnitrit        tetrazotiert,    die  überschüssige     Mineralsäure    mit     Natriumace-          tat    abgestumpft und bei Gegenwart von über  schüssigem     Natriumacetat    mit einer neutra  len Lösung von -10,8 Teilen     1,3-D.iamino-ben-          zol    vereinigt.

   Das Zwischenprodukt ist sehr  rasch     gebildet.    Nach     zweistündigem    Rühren  wird     weitergekuppelt,    indem man die Zwi  schenverbindung in eine Lösung von 11 Tei-         len        Resorcin,    40 Teilen Soda und     6,00    Teilen  Wasser langsam einfliessen lässt, wobei sich  der     Disazofarbstoff    augenblicklich bildet.

    Der mit Sole     resorcinfrei    gewaschene     Dis-          azofarbstoff    wird in     sodaalkalischer        Lösung     mit 30,7 Teilen des     diazotierten        Aminoazo-          fa.rbstoffes,    erhalten durch saure Kupplung  von     diazotierter        5-Amino-2-oxy-benzol-car-          bonsäure    mit     1-Amino-naphthalin,        vereinigt.     Am andern Morgen wird der gebildete     Poly-          azofarbstoff        ausgesalzt,

      filtriert und ge  trocknet.



  <B> Additional patent </B> to main patent no. 246985. Process for the production of a polyazo dye. The present patent relates to a process for the production of a polyazo dye. The process is characterized in that 'the diazotized amino azo compound 4-amino-naphthyl-1,1'-azo-4'-oxy-benzene-3'-carboxylic acid is combined with the disazo dye in an alkaline medium,

   which is obtainable by coupling 1 mol of tetrazotized 1-oxy-2,6-diamino-benzene-4-sulphonic acid on the one hand with 1 mol of 1,3-diamino-benzene and on the other hand with 1 mol of resorcinol.



  The new polyazo dye obtained is a dark powder that dissolves in water with brown and in concentrated sulfuric acid with a dirty gray-blue color. Cotton and fibers made from regenerated cellulose are colored in dark brown tones. Subsequent treatment with copper sulfate improves wet and light fastness considerably.



  <I> Example: </I> 20.4 parts of 1-oxy-2,6 = diamino-benzene-4-sulphonic acid are tetrazotized in hydrochloric acid solution with 132.8 parts of sodium nitrite, and the excess mineral acid is truncated with sodium acetate and in the presence of excess sodium acetate combined with a neutral solution of -10.8 parts of 1,3-D.iamino-benzene.

   The intermediate product is formed very quickly. After two hours of stirring, the coupling is continued by slowly flowing the intermediate compound into a solution of 11 parts of resorcinol, 40 parts of soda and 6.00 parts of water, the disazo dye being formed immediately.

    The disazo dye washed with brine free of resorcinol is obtained in a soda-alkaline solution with 30.7 parts of the diazotized aminoazo dye obtained by acidic coupling of diazotized 5-amino-2-oxy-benzene-carboxylic acid with 1-amino-naphthalene , united. The next morning the polyazo dye formed is salted out,

      filtered and dried.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines P'olyazo- farbstoffes, dadurch gekennzeichnet, dass man die diazotierte Aminoazoverbindung 4-Amino- naphthyl -1,1' - azo - 4' = oxy. - benzol-3'- carbon- säure in alkalischem Medium mit dem Dis- azofarbstoff vereinigt, PATENT CLAIM: Process for the production of a polyazo dye, characterized in that the diazotized aminoazo compound 4-amino-naphthyl -1,1 '- azo - 4' = oxy. - benzene-3'-carboxylic acid combined with the disazo dye in an alkaline medium, der erhältlich ist durch Kuppeln von 1 Mol tetrazotierter 1- Oxy-2,6-diamino-benzol-4-sulfonsäure einer seits mit 1 Mol 1,3-Diamino-benzol und an derseits mit 1 Mol Resorcin. Der erhaltene neuePolyazofarbstoffsLllt ein dunkles Pulver dar, das , which can be obtained by coupling 1 mol of tetrazotized 1-oxy-2,6-diamino-benzene-4-sulfonic acid on the one hand with 1 mol of 1,3-diamino-benzene and on the other hand with 1 mol of resorcinol. The new polyazo dye obtained is a dark powder which, sich in Wasser mit brauner und in konzentrierter Schwefel säure mit schmutzig graublauer Farbe löst. Baumwolle und Fasern aus regenerierter Cel- lulose werden in dunkelbraunen Tönen an gefärbt. Durch Nachbe@handiung mit Kupfer sulfat werden Nass- und Lichtechtheit erheb- 1 ich verbessert. dissolves in water with brown and in concentrated sulfuric acid with a dirty gray-blue color. Cotton and fibers made from regenerated cellulose are colored in dark brown tones. After treatment with copper sulfate, the wet and light fastness are considerably improved.
CH252289D 1945-11-09 1945-11-09 Process for the preparation of a polyazo dye. CH252289A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH246985T 1945-11-09
CH252289T 1945-11-09

Publications (1)

Publication Number Publication Date
CH252289A true CH252289A (en) 1947-12-15

Family

ID=25729163

Family Applications (1)

Application Number Title Priority Date Filing Date
CH252289D CH252289A (en) 1945-11-09 1945-11-09 Process for the preparation of a polyazo dye.

Country Status (1)

Country Link
CH (1) CH252289A (en)

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