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CH194188A - Process for the preparation of a water-insoluble disazo dye. - Google Patents

Process for the preparation of a water-insoluble disazo dye.

Info

Publication number
CH194188A
CH194188A CH194188DA CH194188A CH 194188 A CH194188 A CH 194188A CH 194188D A CH194188D A CH 194188DA CH 194188 A CH194188 A CH 194188A
Authority
CH
Switzerland
Prior art keywords
orange
water
preparation
disazo dye
insoluble disazo
Prior art date
Application number
Other languages
German (de)
Inventor
A-G J R Geigy
Original Assignee
Geigy Ag J R
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 Geigy Ag J R filed Critical Geigy Ag J R
Publication of CH194188A publication Critical patent/CH194188A/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
    • C09B35/00Disazo and polyazo dyes of the type A<-D->B prepared by diazotising and coupling
    • C09B35/02Disazo dyes
    • C09B35/039Disazo dyes characterised by the tetrazo component
    • C09B35/28Disazo dyes characterised by the tetrazo component the tetrazo component containing two aryl nuclei linked by at least one of the groups —CON<, —SO2N<, —SO2—, or —SO2—O—

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Coloring (AREA)
  • Paper (AREA)
  • Inks, Pencil-Leads, Or Crayons (AREA)

Description

  

  Verfahren zur Herstellung eines wasserunlöslichen     Bisazofarbstoffes.       Es wurde gefunden,     dass    man durch Kup  peln von     tetrazotiertem        p,p'-Diaminodiphe-          nylsulfon    mit 2     Mol.    a     Naphthylamin    einen  neuen, wertvollen, wasserunlöslichen     Disazo-          farbstoff    erhält, der sich infolge seiner guten  Löslichkeit zum Färben vor)     Celluloseester-          und        Spritlacken,    Ölen und Fetten,     Kohlen-          wasserstoffen,

      Harzen, Wachsen, sowie für  graphische Zwecke, wie beispielsweise Kupfer  tiefdruck, eignet.  



  Der neue Farbstoff, ein     oranges    Pulver,  löst sich in Alkohol gelborange und in kon  zentrierter Schwefelsäure orange und gibt  ,sehr reine, braune Drucke, die sich durch  hervorragende     Sublimierechtheit    auszeichnen.  <I>Beispiel:</I>  <B>6,2 kg p,</B>     p'-Diamitiodiphenylsulfon    werden  in üblicher Weise     tetrazotiert    und langsam  bei<B>0 0</B> zu einer feinverteilten,     wässrigen    Sus  pension von<B>9,1 kg</B>     a-Naphthylamin-Chlorhy-          drat    gegeben. Durch langsame Zugabe von       Natriumacetat    wird die Mineralsäure abge  stumpft und die Kupplung beendet.

   Nachher    wird filtriert, neutral gewaschen und getrock  net. Das erhaltene orange Pulver löst sich  in Alkohol gelborange und in     konz.    Schwefel  säure orange und färbt     Celluloseester-    und       Spritlacke,    sowie Öle, Fette,     Kohlenwasser-          stoffe,    Harze, Wachse und     Lösungsmittel-          gemische    für Kupfertiefdruck in sehr reinen,  braunen Tönen, die Drucke von sehr guter       Sublimierechtheit    ergeben.



  Process for the preparation of a water-insoluble bisazo dye. It has been found that coupling tetrazotized p, p'-diaminodiphenylsulfone with 2 mol , Oils and fats, hydrocarbons,

      Resins, waxes and for graphic purposes, such as copper gravure printing, are suitable.



  The new dye, an orange powder, dissolves yellow-orange in alcohol and orange in concentrated sulfuric acid and gives very pure, brown prints that are characterized by excellent sublimation fastness. <I> Example: </I> <B> 6.2 kg p, </B> p'-Diamitiodiphenylsulfon are tetrazotized in the usual way and slowly at <B> 0 0 </B> to form a finely divided, aqueous suspension given by <B> 9.1 kg </B> a-naphthylamine chlorohydrate. The mineral acid is blunted by the slow addition of sodium acetate and the coupling is ended.

   It is then filtered, washed neutral and net getrock. The orange powder obtained dissolves in alcohol yellow-orange and in conc. Sulfuric acid orange and colors cellulose ester and fuel varnishes, as well as oils, fats, hydrocarbons, resins, waxes and solvent mixtures for copper gravure printing in very pure, brown tones, which result in prints with very good sublimation fastness.

 

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines wasser unlöslichen Disazofarbstoffes, dadurch gekenn zeichnet, dass man tetrazotiertes <B>p,</B> p'-Diamino- diphenyIsulfon mit 2 Mol. a-Naphthylamin kuppelt. PATENT CLAIM: Process for the production of a water-insoluble disazo dye, characterized in that tetrazotized p, p'-diaminodiphenyl sulfone is coupled with 2 moles of a-naphthylamine. Der neue Farbstoff, ein oranges Pulver, löst sich in Alkohol gelborange und in konz. Schwefelsäure orange und färbt Celluloseester- und Spritlacke, sowie Öle, Fette, Kohlen- wasserstoffe, Harze, Wachse und Lösungs- mittelgemische für Kupfertiefdruck in sehr reinen, braunen Tönen, die Drucke von sehr guter Sublimierechtheit ergeben. The new dye, an orange powder, dissolves in alcohol yellow-orange and in conc. Sulfuric acid orange and colors cellulose ester and fuel lacquers, as well as oils, fats, hydrocarbons, resins, waxes and solvent mixtures for copper gravure printing in very pure, brown tones, which result in prints with very good sublimation fastness.
CH194188D 1936-05-08 1937-01-05 Process for the preparation of a water-insoluble disazo dye. CH194188A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE194188X 1936-05-08

Publications (1)

Publication Number Publication Date
CH194188A true CH194188A (en) 1937-11-30

Family

ID=5743074

Family Applications (1)

Application Number Title Priority Date Filing Date
CH194188D CH194188A (en) 1936-05-08 1937-01-05 Process for the preparation of a water-insoluble disazo dye.

Country Status (1)

Country Link
CH (1) CH194188A (en)

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