CH211008A - Process for the preparation of a disazo dye. - Google Patents

Process for the preparation of a disazo dye.

Info

Publication number
CH211008A
CH211008A CH211008DA CH211008A CH 211008 A CH211008 A CH 211008A CH 211008D A CH211008D A CH 211008DA CH 211008 A CH211008 A CH 211008A
Authority
CH
Switzerland
Prior art keywords
disazo dye
preparation
alkaline solution
oxynaphthalene
tetrazotized
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 CH211008A publication Critical patent/CH211008A/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
    • C09B35/02—Disazo dyes
    • C09B35/039—Disazo dyes characterised by the tetrazo component
    • C09B35/24—Disazo dyes characterised by the tetrazo component the tetrazo component being a derivative of a diaryl amine

Landscapes

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

Description

  

  <B>Zusatzpatent</B> zum Hauptpatent Nr. 208539.    Verfahren zur Herstellung eines     Disazofarbstoffes.       Gegenstand des Hauptpatentes ist ein Ver  fahren zur Herstellung eines     Disazofarbstoffes,     welches dadurch gekennzeichnet ist, dass man       tetrazotiertes        4.4'-Diaminodiphenylamin    in  alkalischer Lösung mit je 1     Mol        1-Äthyl-          amino-8-oxynaphthalin-3.6-disulfonsäure    und       3-Oxydiphenylamin    vereinigt.  



  Wie nun weiter gefunden wurde, erhält  man einen     Farbstoff    von ähnlichen Eigen  schaften, wenn man     tetrazotiertes        4.4'-Di-          aminodiphenylamin    in alkalischer Lösung mit  je 1     Mol        1-Äthylamino-8-oxynaphthalin-3.6-          disulfonsäure    und     1.3-Dioxybenzol    vereinigt.    <I>Beispiel:</I>    19,9 Teile     4.4'-Diaminodiphenylamin    wer  den     tetrazotiert    und mit 31,9 Teilen einer  alkalischen Lösung von     1-Äthylamino-8-oxy-          naphthalin-3.6-disulfonsäure    vereinigt.

   Sobald    die Bildung des     Monoazofarbstoffes    beendigt  ist, fügt man eine alkalische Lösung von  11,0 Teilen     1.3-Dioxybenzol    zu. Der fertige       Disazofarbstoff    färbt Leder in tiefen grün  schwarzen Tönen ohne zu bronzieren.



  <B> Additional patent </B> to main patent no. 208539. Process for the production of a disazo dye. The main patent relates to a process for the production of a disazo dye, which is characterized in that tetrazotized 4,4'-diaminodiphenylamine is combined in alkaline solution with 1 mole of 1-ethylamino-8-oxynaphthalene-3,6-disulfonic acid and 3-oxydiphenylamine.



  As has now been found, a dye of similar properties is obtained if tetrazotized 4,4'-diaminodiphenylamine is combined in alkaline solution with 1 mole of 1-ethylamino-8-oxynaphthalene-3.6-disulfonic acid and 1,3-dioxybenzene. <I> Example: </I> 19.9 parts of 4,4'-diaminodiphenylamine who are tetrazotized and combined with 31.9 parts of an alkaline solution of 1-ethylamino-8-oxynaphthalene-3,6-disulfonic acid.

   As soon as the formation of the monoazo dye has ended, an alkaline solution of 11.0 parts of 1,3-dioxybenzene is added. The finished disazo dye dyes leather in deep green-black tones without bronzing.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines Disazo- farbstoffes, dadurch gekennzeichnet, dass man tetrazotiertes 4.4'-Diaminodiphenylamin in alkalischer Lösung mit je 1 Mol 1-Äthyl- amino-8-oxynaphthalin-3.6-disulfonsäure und 1.3-Dioxybenzol vereinigt. Der fertige Dis- azofarbstoff färbt Leder in tiefen grün schwarzen Tönen ohne zu bronzieren. Claim: Process for the preparation of a disazo dye, characterized in that tetrazotized 4,4'-diaminodiphenylamine is combined in alkaline solution with 1 mol of 1-ethylamino-8-oxynaphthalene-3,6-disulfonic acid and 1,3-dioxybenzene. The finished disazo dye dyes leather in deep green-black tones without bronzing.
CH211008D 1937-10-07 1938-08-13 Process for the preparation of a disazo dye. CH211008A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE211008X 1937-10-07
CH208539T 1938-08-13

Publications (1)

Publication Number Publication Date
CH211008A true CH211008A (en) 1940-08-15

Family

ID=25724537

Family Applications (1)

Application Number Title Priority Date Filing Date
CH211008D CH211008A (en) 1937-10-07 1938-08-13 Process for the preparation of a disazo dye.

Country Status (1)

Country Link
CH (1) CH211008A (en)

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