CH212990A - Process for the preparation of a hexakisazo dye. - Google Patents

Process for the preparation of a hexakisazo dye.

Info

Publication number
CH212990A
CH212990A CH212990DA CH212990A CH 212990 A CH212990 A CH 212990A CH 212990D A CH212990D A CH 212990DA CH 212990 A CH212990 A CH 212990A
Authority
CH
Switzerland
Prior art keywords
dye
acid
brown
diazo
preparation
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 CH212990A publication Critical patent/CH212990A/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
    • C09B35/64—Higher polyazo dyes, e.g. of the types

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

Description

  

  Verfahren zur Darstellung eines     Hegakisazofarbstoffes.       Gegenstand     des    vorliegenden Patentes     ist     ein Verfahren zur Darstellung eines     Hegakis-          azofarbstoffes,    dadurch     ,gekenazeiohnet,

          dass     man 2     Mol    des     Monoazofarbstoffes        aus.diazo-          tierter        4'-Nitro-4=aminodiphenylamin-2'-sul-          fonsäure    und dem     technischen        Gemisch    der       1-Naphthylamin-6-    und     -7-sulfonsäure        .diazo-          tiert    und die     Diazoverbindung    mit einem     Mol     des     Disazofarbetoffes    aus 1     Mol     <RTI  

   ID="0001.0024">   tetrazotierter          4,4'-Diaminodipheuyl-2,2'-idisulfonsäure    und  2     Mol        Resorcin    in alkalischer Lösung kuppelt.  



  Der neue Farbstoff ist ein     dunkles    Pul  ver; er löst sich in     Wasser    braun, in konzen  trierter     Schwefeleäure        Braunolive    und färbt       Leder    in tiefen bauneu Tönen.

      <I>Beispiel:</I>    54,3 Teile des     Monoazofarbstoffes    aus       diazotierter        4'-Nitro-4-aminodiphenylamin-2'-          sulfonsäure    und dem     technischen        Gemisch    der       1-Naphthylamin-6-    und     -7-sulfoneäure    wer  den     diazotiert    und darauf mit     einer    Lösung  von 29,3 Teilen des     Disazofarbstoffe    s aus  1     Mol        tetrazotierter        4,4'-Diaminodiphenyl-          2,

  2'-diGulfonsäure    und 2 Molekülen     Resorcin,       gelöst in Wasser und 40 Teilen Soda, bei 0    gekuppelt. Nach einigen Stunden erwärmt  man auf 45  , salzt aus, filtriert und trocknet.  Der     neue    Farbstoff, ein dunkles Pulver, löst  sich in Wasser braun, in konzentrierter  Schwefelsäure Braunolive und färbt     Leder    in  tiefen     braunen    Tönen.



  Process for the preparation of a hegakis azo dye. The subject of the present patent is a method for the preparation of a Hegakis azo dye, thereby, gekenazeiohnet,

          that 2 moles of the monoazo dye from diazo-tated 4'-nitro-4 = aminodiphenylamine-2'-sulphonic acid and the technical mixture of 1-naphthylamine-6- and -7-sulphonic acid .diazo- and the diazo compound with one mole of the disazo dye from 1 mole <RTI

   ID = "0001.0024"> tetrazotized 4,4'-diaminodipheuyl-2,2'-idisulfonic acid and 2 mol of resorcinol in alkaline solution are coupled.



  The new dye is a dark powder; it dissolves brown in water, brown olive in concentrated sulfuric acid and dyes leather in deep brownish tones.

      <I> Example: </I> 54.3 parts of the monoazo dye from diazotized 4'-nitro-4-aminodiphenylamine-2'-sulfonic acid and the technical mixture of 1-naphthylamine-6- and -7-sulfonic acid who are diazotized and then with a solution of 29.3 parts of the disazo dyes from 1 mol of tetrazotized 4,4'-diaminodiphenyl-2,

  2'-digulfonic acid and 2 molecules of resorcinol, dissolved in water and 40 parts of soda, coupled at 0. After a few hours, the mixture is warmed to 45, salted out, filtered and dried. The new dye, a dark powder, dissolves brown in water, brown olive in concentrated sulfuric acid and dyes leather in deep brown tones.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines Ilegakis- azofarbstoffes, dadurch gekennzeichnet, dass man 2 Mol des 2Zonoazofarbstoffes aus diazo- tierter 4'-Nitro-4-aminodiphenylamin-2'-sul- fonsäure und dem technischen Gemisch der 1-Naphthylamin-6- und -7-sulfonsäure .diazo- tiert und die Diazoverbindung mit einem PATENT CLAIM: Process for the preparation of an igakis azo dye, characterized in that 2 moles of the 2Zonoazo dye from diazo-tated 4'-nitro-4-aminodiphenylamine-2'-sulphonic acid and the technical mixture of 1-naphthylamine-6- and -7-sulfonic acid .diazo- and the diazo compound with a Hol des Disazofarbstoffes aus 1 Mol tetrazo- tierter 4,4'- Diaminodiphenyl - 2, 2' -,disulf an - säure und 2 Mol Resorein in alkalischer Lö sung kuppelt. Der neue Farbstoff ist ein dunkles Pul ver; er löst sieh in Wasser braun, in konzen- trierter Schwefelsäure Braunolive und färbt, Leder in tiefen braunen Tönen. The disazo dye is obtained from 1 mole of tetrazolated 4,4'-diaminodiphenyl - 2,2 '-, disulfan - acid and 2 moles of resorein in an alkaline solution. The new dye is a dark powder; it dissolves brown in water, brown olive in concentrated sulfuric acid and dyes leather in deep brown tones.
CH212990D 1938-10-05 1938-10-05 Process for the preparation of a hexakisazo dye. CH212990A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH212990T 1938-10-05
CH210342T 1938-10-05

Publications (1)

Publication Number Publication Date
CH212990A true CH212990A (en) 1940-12-31

Family

ID=25724837

Family Applications (1)

Application Number Title Priority Date Filing Date
CH212990D CH212990A (en) 1938-10-05 1938-10-05 Process for the preparation of a hexakisazo dye.

Country Status (1)

Country Link
CH (1) CH212990A (en)

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