CH208539A - Process for the preparation of a disazo dye. - Google Patents

Process for the preparation of a disazo dye.

Info

Publication number
CH208539A
CH208539A CH208539DA CH208539A CH 208539 A CH208539 A CH 208539A CH 208539D A CH208539D A CH 208539DA CH 208539 A CH208539 A CH 208539A
Authority
CH
Switzerland
Prior art keywords
disazo dye
preparation
alkaline solution
tetrazotized
disazo
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 CH208539A publication Critical patent/CH208539A/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

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

Description

  

  Verfahren zur Herstellung eines     Disazofarbstoffes.       Wie gefunden wurde, erhält man wert  volle     grünstichig    blaue bis schwarze     Disazo-          farbstoffe,    wenn man     tetrazotierte        Diamino-          diphenylamine    und ihre Derivate in alkali  scher Lösung mit einem     Mol    einer in der       Aminogruppe    durch     Alkyl        substitnierten          1-Amino-8-oxynaplithalinmono-    oder     -disul-          fonsäure    und einem     

  Mol    einer kupplungs  fähigen     Oxyverbindung    der     Benzolreihe,    z. B.  <B>1 -</B>     3-Dioxybenzol    oder     3-Diplienylamin,    ver  einigt. Die Farbstoffe sind in erster Linie  zum Färben von Leder bestimmt.  



  Gegenstand des vorliegenden Patentes ist  ein Verfahren zur Herstellung eines     Disazo-          farbstoffes,    welches dadurch gekennzeichnet  ist,     dass    man     tetrazotiertes    4.     4-Diamino-          diphenylamin    in alkalischer Lösung mit<B>je</B>  <B>1</B>     Mol        1-Äthylamino-8-oxynaphtlialin-3        -6-          clisulionsäure    und     3-Oxydiphenylamin    verei  nigt.  



  <I>Beispiel:</I>  <B>19,9</B> Teile     4.4'-Diaminodiphenylamin     werden     tetrazotiert    und mit<B>31,9</B> Teilen einer    alkalischen Lösung von     1-Athylamino-8-exy-          naphthalin-3        -6-clisulfonsäure    vereinigt. So  bald die Bildung des     Monoazofarbstoffes     beendigt ist, fügt man eine alkalische Lösung  von<B>18,5</B> Teilen     3-Oxydiphenylamin    zu.

   Der  fertige,     Disazo-farbstoff    wird     ausgesalzen    und  gibt auf Leder dunkelblaue bis schwarze,  etwas     grünstieIiige'Töne    von guten     Ec'hilieits-          eigenschaften.  



  Process for the preparation of a disazo dye. As has been found, valuable greenish blue to black disazo dyes are obtained if tetrazotized diamino diphenylamines and their derivatives are mixed in alkaline solution with one mole of a 1-amino-8-oxynaplithalin mono- or disulene substituted by alkyl in the amino group - fonsäure and one

  Moles of a coupling capable oxy compound of the benzene series, z. B. 1 - 3-dioxybenzene or 3-diplienylamine, united. The dyes are primarily intended for dyeing leather.



  The subject of the present patent is a process for the production of a disazo dye, which is characterized in that tetrazotized 4,4-diaminodiphenylamine is added in alkaline solution with <B> each </B> <B> 1 </B> mol 1-Ethylamino-8-oxynaphthalene-3-6-clisulionic acid and 3-oxydiphenylamine combined.



  <I> Example: </I> <B> 19.9 </B> parts of 4,4'-diaminodiphenylamine are tetrazotized and mixed with <B> 31.9 </B> parts of an alkaline solution of 1-ethylamino-8-exy - Naphthalene-3-6-clisulfonic acid combined. As soon as the formation of the monoazo dye has ended, an alkaline solution of <B> 18.5 </B> parts of 3-oxydiphenylamine is added.

   The finished disazo dye is salted out and gives leather dark blue to black, somewhat greenish tones with good ecologic properties.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines Disazo- farbstoffes, dadurch gekennzeichnet, dass man tetrazotiertes 4.4'-Diamino,diphenylamin in alkalischer Lösung mit je<B>1</B> Mül 1-Äthyl- amino-8-,o,xynaplithalin-3-6-disulfonsäure und 3-Oxydiphenylamin vereinigt. Der fertige Disazofarbstoff gibt auf Leder dunkelblaue bis schwarze, etwas grünstiehige Töne von guten Echtheitseigenschaften. PATENT CLAIM: Process for the production of a disazo dye, characterized in that tetrazotized 4,4'-diamino, diphenylamine in alkaline solution with 1-Mül 1-ethylamino-8-, o, xynaplithalin-3 -6-disulfonic acid and 3-oxydiphenylamine combined. The finished disazo dye gives dark blue to black, somewhat greenish tones with good fastness properties on leather.
CH208539D 1937-10-07 1938-08-13 Process for the preparation of a disazo dye. CH208539A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE208539X 1937-10-07

Publications (1)

Publication Number Publication Date
CH208539A true CH208539A (en) 1940-02-15

Family

ID=5794293

Family Applications (1)

Application Number Title Priority Date Filing Date
CH208539D CH208539A (en) 1937-10-07 1938-08-13 Process for the preparation of a disazo dye.

Country Status (1)

Country Link
CH (1) CH208539A (en)

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