CH214810A - Process for the preparation of a trisazo dye. - Google Patents

Process for the preparation of a trisazo dye.

Info

Publication number
CH214810A
CH214810A CH214810DA CH214810A CH 214810 A CH214810 A CH 214810A CH 214810D A CH214810D A CH 214810DA CH 214810 A CH214810 A CH 214810A
Authority
CH
Switzerland
Prior art keywords
hol
dye
black
preparation
trisazo dye
Prior art date
Application number
Other languages
German (de)
Inventor
Aktiengesellsc Farbenindustrie
Original Assignee
Ig Farbenindustrie Ag
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 Ig Farbenindustrie Ag filed Critical Ig Farbenindustrie Ag
Publication of CH214810A publication Critical patent/CH214810A/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
    • C09B35/44—Trisazo dyes ot the type the component K being a hydroxy amine
    • C09B35/46—Trisazo dyes ot the type the component K being a hydroxy amine the component K being an amino naphthol
    • C09B35/463—D being derived from diaminodiphenyl

Landscapes

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

Description

  

  <B>Zusatzpatent</B> zum Hauptpatent Nr. 212416.    Verfahren zur Herstellung eines     Trisazofarbstoffes.       Gegenstand des vorliegenden Patentes ist  ein Verfahren zur Herstellung eines     Trisazo-          farbstoffes.    Das Verfahren ist dadurch ge  kennzeichnet, dass man 1 Hol     tetrazotiertes          4,4'-Diamino-diphenyl    in saurem Medium mit  1 Hol     1-Amino-8-oxynaphthalin-3,6-dis.ulfon-          säure    kuppelt,

   auf den gebildeten     Monoazo-          fa.rbstoff    1 Hol     diazotierte        p-Sulfanilsäure     einwirken lässt und schliesslich mit 1 Hol     3-          Methylsulfamino-diphenylamin    kuppelt.  



  Der neue Farbstoff stellt ein dunkles Pul  ver dar, das sich in Wasser mit schwarz  violetter Farbe löst und Leder in vollen blu  migen schwarzen Tönen färbt.  



       Beispiel:     184 Teile     4,4'-Diaminodiphenyl    werden  in üblicher Weise     tetrazotiert    und mit 341  Teilen     1-Amino-8-oxynaphthalin-3,6-disulfon-          säure    in mineralsaurem Medium gekuppelt.  Dieses Zwischenprodukt wird     sodaalkalisch     mit der     Diazoverbindung    aus 209 Teilen     p-          Sulfanilsäure    (2 1120) vereinigt. Wenn keine  freie     Diazoverbindung    mehr nachzuweisen ist,  fügt man eine     natronalkalische    Lösung aus    262 Teilen     3-Methylsulfamino-diphenylamiu     zu.

   Nach einigen Stunden ist die     Farbstoff-          bi.l-dung    beendet. Durch Zusatz von Kochsalz  und Abstumpfen mit Mineralsäure wird der  Farbstoff abgeschieden. Er färbt Leder in  vollen blumigen schwarzen Tönen von her  vorragender Säurebeständigkeit an.



  <B> Additional patent </B> to main patent no. 212416. Process for the production of a trisazo dye. The present patent relates to a process for the production of a trisazo dye. The process is characterized in that 1 hol of tetrazotized 4,4'-diamino-diphenyl is coupled in an acidic medium with 1 hol of 1-amino-8-oxynaphthalene-3,6-disulfonic acid,

   Lets diazotized p-sulfanilic acid act on the monoazo-dye formed 1 hol and finally couples 3-methylsulfamino-diphenylamine with 1 hol.



  The new dye is a dark powder that dissolves in water with a black-violet color and dyes leather in full flowery black tones.



       Example: 184 parts of 4,4'-diaminodiphenyl are tetrazotized in the usual way and coupled with 341 parts of 1-amino-8-oxynaphthalene-3,6-disulfonic acid in a mineral acid medium. This intermediate product is combined with the diazo compound of 209 parts of p-sulfanilic acid (2 1120) in an alkaline form. When no more free diazo compound can be detected, an alkaline soda solution of 262 parts of 3-methylsulfamino-diphenylamine is added.

   After a few hours, the dye formation is complete. The dye is deposited by adding table salt and blunting it with mineral acid. It stains leather in full flowery black tones with excellent acid resistance.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines Trisazo- farbstoffes, dadurch gekennzeichnet, dass man 1 Hol tetrazotiertes 4,4'-Diamino-diphenyl in saurem Medium mit 1 Hol 1-Amino-8-oxy- naphthalin-3,6-disulfonsäure kuppelt, auf den gebildeten Monoazofarbstoff 1 Hol diazo- tierte p-Sulfanilsäure einwirken lässt und schliesslich mit 1 Mol 3-Methylsulfamino-di- phenylamin kuppelt. PATENT CLAIM: A process for the production of a trisazo dye, characterized in that 1 hol of tetrazotized 4,4'-diamino-diphenyl is coupled in an acidic medium with 1 hol of 1-amino-8-oxynaphthalene-3,6-disulfonic acid the formed monoazo dye 1 Hol diazotized p-sulfanilic acid is allowed to act and finally couples with 1 mole of 3-methylsulfamino-diphenylamine. Der neue Farbstoff stellt ein dunkles Pul ver dar, das sich in Wasser mit schwarz violetter Farbe löst und Leder in vollen blu migen schwarzen Tönen färbt. The new dye is a dark powder that dissolves in water with a black-violet color and dyes leather in full flowery black tones.
CH214810D 1938-05-02 1939-04-17 Process for the preparation of a trisazo dye. CH214810A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE214810X 1938-05-02
CH212416T 1939-04-17

Publications (1)

Publication Number Publication Date
CH214810A true CH214810A (en) 1941-05-15

Family

ID=25725226

Family Applications (1)

Application Number Title Priority Date Filing Date
CH214810D CH214810A (en) 1938-05-02 1939-04-17 Process for the preparation of a trisazo dye.

Country Status (1)

Country Link
CH (1) CH214810A (en)

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