CH261845A - 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
CH261845A
CH261845A CH261845DA CH261845A CH 261845 A CH261845 A CH 261845A CH 261845D A CH261845D A CH 261845DA CH 261845 A CH261845 A CH 261845A
Authority
CH
Switzerland
Prior art keywords
dye
dioxyazo
red
violet
preparation
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 CH261845A publication Critical patent/CH261845A/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)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Description

  

  Verfahren zur Herstellung eines     o,o'-Dioxyazofarbstoffes.       Gegenstand vorliegenden Patentes bildet.  ein Verfahren zur     Herstellung    eines     o,o'-Di-          oxyazofarbstoffes.    Das Verfahren ist dadurch  gekennzeichnet, dass man dianotierte     2-Amino-          4-tert.butyl-phenol    -     6-sulfonsäure    in alkali  schem Medium mit.     1-Carboniethoxyamino-7-          oxynaphthalin    kuppelt.

   Der erhaltene neue  Farbstoff stellt ein dunkles Pulver dar, das  sich in Wasser mit     violettblauer,    in konzen  trierter Schwefelsäure mit rotvioletter Farbe  löst und Wolle aus saurem Bad in blauroten  Tönen färbt, die beim     Nachehromieren    nach       rotstich    grau umschlagen.     Nacli    dem Einbad  chromierverfahren erhält     inan    auf Wolle ein  sehr gut     liehteclites,        rotstichiges    Grau.

      <I>Beispiel:</I>  49 Teile     4-tert.        Butyl-2-amino-phenol-6-          sulfonsäure    werden als     Natriumsalz    in 500  Teilen Wasser gelöst und nach Zusatz von 6,9  Teilen     Natriumnitrit    wie üblich indirekt di  anotiert. Die     Diazoverbindung    lässt man in  eine Lösung von 45,6 Teilen 1-Carbo-methoxy-         amino-7-oxy-naphthalin    in 500 Teilen Wasser,  22 Teilen Natronlauge 40     öig    und 50 Teilen       caleiniertein        Natriumcarbonat    bei 0 bis<B>50</B>     G     einfliessen.

   Nach einigen Stunden Rühren fil  triert man den fertiggebildeten Farbstoff ab  und trocknet, ihn.



  Process for the preparation of an o, o'-dioxyazo dye. Subject of the present patent forms. a process for the preparation of an o, o'-dioxyazo dye. The process is characterized in that dianotated 2-amino-4-tert-butyl-phenol-6-sulfonic acid is used in an alkaline medium. 1-carboniethoxyamino-7-oxynaphthalene couples.

   The new dye obtained is a dark powder that dissolves in water with violet-blue in concentrated sulfuric acid with red-violet color and dyes wool from an acid bath in blue-red tones that turn reddish gray when re-enumerating. After the one-bath chroming process, wool is given a very light-colored, red-tinged gray.

      <I> Example: </I> 49 parts 4-tert. Butyl-2-aminophenol-6-sulfonic acid is dissolved as the sodium salt in 500 parts of water and, after addition of 6.9 parts of sodium nitrite, anotated indirectly as usual. The diazo compound is left in a solution of 45.6 parts of 1-carbo-methoxy-amino-7-oxy-naphthalene in 500 parts of water, 22 parts of 40% sodium hydroxide solution and 50 parts of calcium carbonate at 0 to 50% > G flow in.

   After a few hours of stirring, the finished dye is filtered off and dried.

Claims (1)

<B>PATENTANSPRUCH:</B> Verfahren zur Herstellung eines o,o'-Di- oxyazofarbstoffes, dadurch gekennzeichnet, class man dianotierte 2-Amiiio-4-tert.butyl- plienol-6-sulfonsäiire in alkalischem Medium mit 1-Carbomethoxyamino-7-oxy-naphthalin kuppelt. Der erhaltene neue Farbstoff stellt. Claim: Process for the production of an o, o'-dioxyazo dye, characterized in that dianotated 2-amino-4-tert.butylplienol-6-sulfonic acid is classed in an alkaline medium with 1-carbomethoxyamino -7-oxy-naphthalene coupling. The new dye obtained represents. ein dunkles Pulver dar, das sich in Wasser mit violettblauer, in konzentrierter Schwefel säure mit rotvioletter Farbe löst und Wolle aus saurein Bad in blauroten Tönen färbt, die beine Naeliehromieren nach rotstiehig grau umschlagen. Nach dem Einbadchromierver- fahren erhält man auf Wolle ein sehr gut lielitechtes, rotstichiges Grau. a dark powder that dissolves in water with violet-blue color, in concentrated sulfuric acid with red-violet color, and dyes wool from an acidic bath in blue-red tones, the legs of the Naeliehromieren turn reddish gray. The single-bath chrome plating process gives wool a very good lightfast, reddish gray.
CH261845D 1946-11-22 1946-11-22 Process for the preparation of an o, o'-dioxyazo dye. CH261845A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH261845T 1946-11-22
CH256234T 1948-08-15

Publications (1)

Publication Number Publication Date
CH261845A true CH261845A (en) 1949-05-31

Family

ID=25729958

Family Applications (1)

Application Number Title Priority Date Filing Date
CH261845D CH261845A (en) 1946-11-22 1946-11-22 Process for the preparation of an o, o'-dioxyazo dye.

Country Status (1)

Country Link
CH (1) CH261845A (en)

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