CH214811A - Process for the preparation of a trisazo dye. - Google Patents

Process for the preparation of a trisazo dye.

Info

Publication number
CH214811A
CH214811A CH214811DA CH214811A CH 214811 A CH214811 A CH 214811A CH 214811D A CH214811D A CH 214811DA CH 214811 A CH214811 A CH 214811A
Authority
CH
Switzerland
Prior art keywords
mol
dye
preparation
trisazo dye
acid
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 CH214811A publication Critical patent/CH214811A/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

  

  Zusatzpatent     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     Mol        tetrazotiertes          4,4'-Diaminodiphenyl    in saurem Medium mit  1     Mol        1-Amino-8-oxynaphthalin-4,6-disulfon-          säure    kuppelt,

   auf den gebildeten     Monoazo-          farbstoff    1     Mol        diazotierte        p-Sulfanilsäure     einwirken lässt und schliesslich mit 1     Mol        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  blumigen     blaustichig    schwarzen Tönen färbt.       Beispiel:     184 Teile     4,4'-Diaminodiphenyl    werden in  üblicher Weise     tetrazotiert    und mit 341 Tei  len     1-Amino-    8     -ogynaphthalin-    4, 6     -disulfon-          säure    in mineralsaurem Medium gekuppelt.

    Dieses Zwischenprodukt wird     sodaalkalisch     mit der     Diazoverbindung    aus 209 Teilen     p-          Sulfanilsäure    (2 H20) vereinigt. Wenn keine  freie     Diazoverbindung    mehr nachzuweisen ist,  fügt man eine     natronalkalische    Lösung aus    262 Teilen     3-Methylsulfamino-diphenylamin     zu. Nach einigen Stunden ist die Farbstoff  bildung beendet. Durch Zusatz von Kochsalz  und     Abstumpfen    mit Mineralsäure wird der  Farbstoff abgeschieden. Er färbt Leder in  vollen blumigen blaustichig schwarzen Tönen  von hervorragender     Säurebeständigkeit    an.



  Additional patent 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 mol of tetrazotized 4,4'-diaminodiphenyl is coupled with 1 mol of 1-amino-8-oxynaphthalene-4,6-disulfonic acid in an acidic medium,

   1 mol of diazotized p-sulfanilic acid is allowed to act on the monoazo dye formed and finally couples with 1 mol of 3-methylsulfamino-diphenylamine.



  The new dye is a dark powder that dissolves in water with a black-violet color and dyes leather in full flowery blue-tinged black tones. Example: 184 parts of 4,4'-diaminodiphenyl are tetrazotized in the usual way and coupled with 341 parts of 1-amino-8-gynaphthalene-4, 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 H2O) in an alkaline form. When no more free diazo compound can be detected, an alkaline soda solution of 262 parts of 3-methylsulfaminodiphenylamine is added. After a few hours, dye formation has ended. The dye is deposited by adding table salt and blunting it with mineral acid. It stains leather in full, flowery, blue-tinged black tones with excellent acid resistance.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines Trisazo- farbstoffes, dädurch gekennzeichnet, dass man 1 Mol tetrazotiertes 4,4'-Diaminodiphenyl in saurem Medium mit 1 Mol 1-Amino-8-oxy- naphthalin-4,6-disulfonsäure kuppelt, PATENT CLAIM: Process for the preparation of a trisazo dye, characterized in that 1 mol of tetrazotized 4,4'-diaminodiphenyl is coupled in an acidic medium with 1 mol of 1-amino-8-oxynaphthalene-4,6-disulfonic acid, auf den gebildeten Monoazofarbstoff 1 Mol diazo- tierte p-Sulfanilsäure einwirken lässt und schliesslich mit 1 Mol 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 blaustichig schwarzen Tönen färbt. 1 mol of diazotized p-sulfanilic acid is allowed to act on the monoazo dye formed and finally couples with 1 mol of 3-methylsulfaminodiphenylamine. The new dye is a dark powder that dissolves in water with a black-violet color and colors leather in full, bluish, bluish black tones.
CH214811D 1938-05-02 1939-04-17 Process for the preparation of a trisazo dye. CH214811A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE214811X 1938-05-02
CH212416T 1939-04-17

Publications (1)

Publication Number Publication Date
CH214811A true CH214811A (en) 1941-05-15

Family

ID=25725227

Family Applications (1)

Application Number Title Priority Date Filing Date
CH214811D CH214811A (en) 1938-05-02 1939-04-17 Process for the preparation of a trisazo dye.

Country Status (1)

Country Link
CH (1) CH214811A (en)

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