CH261846A - Process for the preparation of an o, o'-dioxyazo dye. - Google Patents

Process for the preparation of an o, o'-dioxyazo dye.

Info

Publication number
CH261846A
CH261846A CH261846DA CH261846A CH 261846 A CH261846 A CH 261846A CH 261846D A CH261846D A CH 261846DA CH 261846 A CH261846 A CH 261846A
Authority
CH
Switzerland
Prior art keywords
red
dye
dioxyazo
preparation
blue
Prior art date
Application number
Other languages
German (de)
Inventor
Ag J R Geigy
Original Assignee
Ag J R Geigy
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 Ag J R Geigy filed Critical Ag J R Geigy
Publication of CH261846A publication Critical patent/CH261846A/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
    • C09B45/00—Complex metal compounds of azo dyes
    • C09B45/02—Preparation from dyes containing in o-position a hydroxy group and in o'-position hydroxy, alkoxy, carboxyl, amino or keto groups
    • C09B45/14—Monoazo compounds
    • C09B45/16—Monoazo compounds containing chromium

Landscapes

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

Description

  

  <B>Verfahren zur Herstellung eines</B>     o,ö        -Dioxyazofarbetoffes.       Gegenstand vorliegenden Patentes bildet  ein Verfahren zur Herstellung eines     o,o'-Di-          oxyazofarbstoffes.    Das Verfahren ist dadurch  gekennzeichnet, dass man     diazotierte        2-Amino-          4-n.        butyl-phenol-6-sulfonsäure    in alkalischem  Medium mit 1-     Carbomethoxyamino    - 7 -     oxy-          naphthalin    kuppelt.

   Der erhaltene neue Farb  stoff stellt ein dunkles Pulver dar, das sich  in Wasser mit     violettblauer,    in konzentrierter  Schwefelsäure mit rotvioletter Farbe löst und  Wolle aus saurem Bad in blauroten Tönen  färbt, die beim     Nachchromieren    nach rot  stickig grau umschlagen. Nach dem     Einbad-          chromierverfahren    erhält man auf Wolle ein  sehr gut lichtechtes, rotstickiges Grau.  



  <I>Beispiel:</I>  49 Teile     2-Amino-4-n.        butyl-phenol-6-sul-          fonsäure    werden als     Natriumsalz    in 500 Teilen  Wasser gelöst und nach Zusatz von 6,9 Teilen       Natriumnitrit    wie üblich indirekt     diazotiert.     Die     Diazoverbindung    lässt man in eine Lösung    von 45,6 Teilen     1-Carbomethoxyamino-7-oxy-          naphthalin    in 500 Teilen Wasser,

   22 Teilen  Natronlauge 40     %        ig    und 50 Teilen     calcinier-          tem        Natriumcarbonat    bei 0 bis 5" C einfliessen.  Nach einigen Stunden     Uühren    filtriert man  den fertiggebildeten Farbstoff ab und trock  net ihn.



  <B> Process for the production of </B> o, ö -Dioxyazofarbetoffes. The present patent forms a process for the preparation of an o, o'-dioxyazo dye. The process is characterized in that diazotized 2-amino-4-n. butyl-phenol-6-sulfonic acid in an alkaline medium with 1-carbomethoxyamino-7-oxynaphthalene couples.

   The new dye obtained is a dark powder that dissolves in water with a violet-blue color, in concentrated sulfuric acid with a red-violet color and dyes wool from an acidic bath in blue-red tones that turn to red, stuffy gray when re-chromed. The single-bath chroming process produces a very lightfast, red-embroidered gray on wool.



  <I> Example: </I> 49 parts of 2-amino-4-n. butyl-phenol-6-sulphonic acid are dissolved as the sodium salt in 500 parts of water and, after addition of 6.9 parts of sodium nitrite, indirectly diazotized as usual. The diazo compound is left in a solution of 45.6 parts of 1-carbomethoxyamino-7-oxynaphthalene in 500 parts of water,

   22 parts of 40% sodium hydroxide solution and 50 parts of calcined sodium carbonate are poured in at 0 to 5 ° C. After a few hours of stirring, the finished dye is filtered off and dried.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines o,o'-Di- oxyazofarbstoffes, dadurch gekennzeichnet, dass man diazotierte 2-Amino-4-n. butyl-phe- nol-6-sulfonsäure in alkalischem Medium mit 1-Carbomethoxyamino-7-oxynaphthalin kup pelt. PATENT CLAIM: A process for the preparation of an o, o'-dioxyazo dye, characterized in that diazotized 2-amino-4-n. butyl-phenol-6-sulfonic acid in an alkaline medium with 1-carbomethoxyamino-7-oxynaphthalene coupled. Der erhaltene neue Farbstoff stellt ein dunkles Pulver dar, das sich in Wasser mit violettblauer, in konzentierter Schwefelsäure mit rot-,-ioletter Farbe löst und Wolle aus saurem Bad in blauroten Tönen färbt, die beim Nachchromieren nach rotstickig grau umschlagen. Nach dem Einbadchromierverfah- ren erhält man auf Wolle ein sehr gut licht echtes rotstickiges Grau. The new dye obtained is a dark powder that dissolves in water with violet-blue, in concentrated sulfuric acid with red -, - iolet color and dyes wool from an acid bath in blue-red tones, which turn to red-sticky gray when re-chromed. After the one-bath chrome plating process, a very light, genuine red-embroidered gray is obtained on wool.
CH261846D 1946-11-22 1946-11-22 Process for the preparation of an o, o'-dioxyazo dye. CH261846A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH261846T 1946-11-22
CH256234T 1948-08-15

Publications (1)

Publication Number Publication Date
CH261846A true CH261846A (en) 1949-05-31

Family

ID=25729959

Family Applications (1)

Application Number Title Priority Date Filing Date
CH261846D CH261846A (en) 1946-11-22 1946-11-22 Process for the preparation of an o, o'-dioxyazo dye.

Country Status (1)

Country Link
CH (1) CH261846A (en)

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