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CH218815A - Process for the preparation of a disazo dye. - Google Patents

Process for the preparation of a disazo dye.

Info

Publication number
CH218815A
CH218815A CH218815DA CH218815A CH 218815 A CH218815 A CH 218815A CH 218815D A CH218815D A CH 218815DA CH 218815 A CH218815 A CH 218815A
Authority
CH
Switzerland
Prior art keywords
dye
preparation
amino
disazo dye
combined
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 CH218815A publication Critical patent/CH218815A/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
    • C09B31/00—Disazo and polyazo dyes of the type A->B->C, A->B->C->D, or the like, prepared by diazotising and coupling
    • C09B31/02—Disazo dyes
    • C09B31/08—Disazo dyes from a coupling component "C" containing directive hydroxyl and amino groups

Landscapes

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

Description

  

  Verfahren zur Herstellung eines     Disazofarbstoffes.       Gegenstand des vorliegenden Zusatzpaten  tes ist ein Verfahren zur Herstellung eines       Disazofarbstoffes,    welches dadurch     gekenn-          zeichnet    ist, dass man die     Diazoverbindung     von     1-Amino-4- i)-sulfopropionylamino)-benzol     mit 1-     Amino-3-niethyl-6-methoxybenzol    ver  einigt, den erhaltenen     Monoazofarbstoffweiter-          diazotiert    und mit 2 -     (Benzoylamino    - 4'     -          benzoylamino)

  -5-        oxynaphthalin    - 7 -     sulfonsäur    e  vereinigt.  



  <I>Beispiel:</I>  24,4 Gewichtsteile     1-Amiiio-4-(aj-sulfopro-          pionylamino)-benzol    werden in 100 Raum  teilen Wasser und 50 Raumteilen     10o/oiger          Sodalösung    gelöst, mit 6,9 Gewichtsteilen       Natriumnitrit    versetzt, und das Gemisch wird  langsam bei 0 o C unter Rühren in verdünnte  Salzsäure eingetragen. Die erhaltene     Diazo-          verbindung,    die zum Teil ausgeschieden ist,  wird in schwach saurem Medium mit der  berechneten Menge     1-Amiiio-3-methyl-6-me-          thoxybenzol    vereinigt.

   Nach beendeter Bildung    des     Monoazofarbstoffes    wird dieser auf übliche  Weise mit berechneten Menge     Natriumnitrit     in Gegenwart von überschüssiger Salzsäure  bei 15   C weiter dianotiert. Die erhaltene     Diazo-          verbindung    wird     dann    mit einer     wässrigen     Lösung des     Natriumsalzes    der     2-(Benzoyl-          amino    - 4'-     benzoylamino)

      - 5 -     oxynaphthalin    -     7-          sulfonsäure    in Gegenwart von überschüssigem       Natriumcarbonat    vereinigt. Nach beendeter  Kupplung wird der     Disazofarbstoff        abfiltriert     und     getrocknet.     



  Er bildet ein braunviolettes Pulver, das  Baumwolle     ili    sehr     nassechten        violettstichigen     gedeckten Blautönen färbt.



  Process for the preparation of a disazo dye. The subject of the present additional patent is a process for the production of a disazo dye, which is characterized in that the diazo compound of 1-amino-4- i) -sulfopropionylamino) -benzene is mixed with 1-amino-3-diethyl-6-methoxybenzene united, the monoazo dye obtained further diazotized and with 2 - (benzoylamino - 4 '- benzoylamino)

  -5- oxynaphthalene - 7 - sulfonic acid combined.



  <I> Example: </I> 24.4 parts by weight of 1-amiiio-4- (aj-sulfopropionylamino) -benzene are dissolved in 100 parts by volume of water and 50 parts by volume of 10% sodium carbonate solution, and 6.9 parts by weight of sodium nitrite are added , and the mixture is slowly introduced into dilute hydrochloric acid at 0 ° C. with stirring. The diazo compound obtained, some of which has been excreted, is combined in a weakly acidic medium with the calculated amount of 1-amino-3-methyl-6-methoxybenzene.

   When the formation of the monoazo dye has ended, it is further dianotized in the usual way with the calculated amount of sodium nitrite in the presence of excess hydrochloric acid at 15 ° C. The resulting diazo compound is then treated with an aqueous solution of the sodium salt of 2- (benzoylamino - 4'-benzoylamino)

      - 5 - oxynaphthalene - 7-sulfonic acid combined in the presence of excess sodium carbonate. After the coupling has ended, the disazo dye is filtered off and dried.



  It forms a brown-violet powder that dyes cotton in very wet-fast, violet-tinged, muted shades of blue.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines Disazo- farbstoffes, dadurch gekennzeichnet, dass man die Diazoverbindung von 1-Amino-4-(cu-sulfo-, propionylamino)-benzol mit 1-Amino-3-methyl- 6-methoxybenzol vereinigt, den erhaltenen 1lonoazofarbstoff weiterdiazotiert und mit 2- (Beiizoyl < imino -4'- benzoylamino) - 5 -oxynapli- thalin-7-sulfonsäure vereinigt. Claim: A process for the preparation of a disazo dye, characterized in that the diazo compound of 1-amino-4- (cu-sulfo-, propionylamino) -benzene is combined with 1-amino-3-methyl-6-methoxybenzene, the obtained 1lonoazo dye is further diazotized and combined with 2- (beiizoyl <imino -4'-benzoylamino) -5-oxynapli- thalin-7-sulfonic acid. Der erhaltene Farbstoff bildet ein braun violettes Pulver, das Baumwolle in sehr nass- echten violettstichigen gedeckten Blautönen färbt. The dye obtained forms a brown-violet powder which dyes cotton in very wet, violet-tinged, muted blue tones.
CH218815D 1938-10-24 1939-10-15 Process for the preparation of a disazo dye. CH218815A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE218815X 1938-10-24
CH214906T 1939-10-15

Publications (1)

Publication Number Publication Date
CH218815A true CH218815A (en) 1941-12-31

Family

ID=25725654

Family Applications (1)

Application Number Title Priority Date Filing Date
CH218815D CH218815A (en) 1938-10-24 1939-10-15 Process for the preparation of a disazo dye.

Country Status (1)

Country Link
CH (1) CH218815A (en)

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