CH261848A - 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
CH261848A
CH261848A CH261848DA CH261848A CH 261848 A CH261848 A CH 261848A CH 261848D A CH261848D A CH 261848DA CH 261848 A CH261848 A CH 261848A
Authority
CH
Switzerland
Prior art keywords
dye
dioxyazo
blue
preparation
red
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 CH261848A publication Critical patent/CH261848A/en

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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

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

Description

  

  verfahren zur Herstellung eines     o,ö        -Dioxyazofarbetoffes.       Gegenstand vorliegenden Patentes bildet  ein Verfahren zur Herstellung eines     o,o'-Di-          oxvazofarbstoffes.    Das Verfahren ist dadurch  gekennzeichnet, dass man     diazotierte        2-Amino-          4-cyclohexyl-phenol-6-sulfonsäure    in alkali  schem Medium mit     1-Carbomethoxyamino-7-          oxynapht.halin    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     Naehehromieren    nach       rotstichig    grau umschlagen. Nach dem     Ein-          badchromierverfahren    erhält man auf Wolle  ein sehr gut     lichteehtes        rotstichiges    Grau.

      <I>Beispiel:</I>    54,2 Teile     2-Amino-4-cyelohexyl-phenol-6-          sulfonsäure    werden als     Natriumsalz    in 500  Teilen Wasser gelöst und nach Zusatz von  6,9 Teilen     Natriumnitrit    wie     üblieh    indirekt       diazotiert.    Die     Diazoverbindung    lässt man in  eine Lösung von 45,6 Teilen 1-Carbomethoxy-         amino-7-oxy-naphthalin    in 500 Teilen Wasser,  22 Teilen Natronlauge 40%ig und 50 Teilen       ealciniertem        Natriumcarbonat    bei 0 bis 5  C ;  einfliessen.

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



  process for the production of an o, ö -Dioxyazofarbetoffes. The present patent forms a process for the preparation of an o, o'-dioxvazo dye. The process is characterized in that diazotized 2-amino-4-cyclohexyl-phenol-6-sulfonic acid is coupled with 1-carbomethoxyamino-7-oxynapht.halin in an alkaline medium.

   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 to reddish gray when close-chromed. The single chrome plating process gives a very light, reddish gray on wool.

      <I> Example: </I> 54.2 parts of 2-amino-4-cyelohexyl-phenol-6-sulfonic 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-carbomethoxy-amino-7-oxy-naphthalene in 500 parts of water, 22 parts of 40% sodium hydroxide solution and 50 parts of alkaline sodium carbonate at 0 to 5 ° C .; flow in.

   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-cyclohexyl- phenol-6-sulfonsäure in alkalischem Medium mit 1-Carbomethoxyamino - 7 - oxynaphthalin kuppelt. Claim: Process for the production of an o, o'-dioxyazo dye, characterized in that diazotized 2-amino-4-cyclohexyl-phenol-6-sulfonic acid is coupled with 1-carbomethoxyamino-7-oxynaphthalene in an alkaline medium. Der erhaltene neue Farbstoff stellt ein dunkles Pulver dar, das sich in Wasser mit violettblauer, in konzentrierter Schwefel säure mit rotvioletter Farbe löst und Wolle aus saurem Bad in blauroten Tönen färbt, die beim Nachchromieren nach rotstichig grau umschlagen. Nach dem Einbadchromierverfah- ren erhält man auf Wolle ein sehr gut licht echtes rotstiehiges Grau. 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, which turn to reddish gray when re-chromed. After the single bath chrome plating process, a very light, genuine reddish gray is obtained on wool.
CH261848D 1946-11-22 1946-11-22 Process for the preparation of an o, o'-dioxyazo dye. CH261848A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH261848T 1946-11-22
CH256234T 1948-08-15

Publications (1)

Publication Number Publication Date
CH261848A true CH261848A (en) 1949-05-31

Family

ID=25729961

Family Applications (1)

Application Number Title Priority Date Filing Date
CH261848D CH261848A (en) 1946-11-22 1946-11-22 Process for the preparation of an o, o'-dioxyazo dye.

Country Status (1)

Country Link
CH (1) CH261848A (en)

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