CH170333A - Process for the preparation of a chromium-containing azo dye. - Google Patents

Process for the preparation of a chromium-containing azo dye.

Info

Publication number
CH170333A
CH170333A CH170333DA CH170333A CH 170333 A CH170333 A CH 170333A CH 170333D A CH170333D A CH 170333DA CH 170333 A CH170333 A CH 170333A
Authority
CH
Switzerland
Prior art keywords
azo dye
chromium
oxynaphthalene
containing azo
nitrated
Prior art date
Application number
Other languages
German (de)
Inventor
Gesellschaft Fuer Chemis Basel
Original Assignee
Chem Ind Basel
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 Chem Ind Basel filed Critical Chem Ind Basel
Publication of CH170333A publication Critical patent/CH170333A/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>Zusatzpatent</B> zum Hauptpatent Nr. 166497.    Verfahren zur Herstellung eines     chromhaltigen        Azofarbstoffes.       Es wurde gefunden, dass man einen     obrom-          haltigen        Azofarbstoff    durch Einwirkung des  chromhaltigen     Azofarbstoffes,    der durch Chro  mseren des     Azofarbstoffes    aus nitrierter 1  Diazo-2-oxynaphthalin-4-sulfonsäure und     2-          Oxynaphthalin        entsteht;

      auf den     Azofarbstoff,     der durch Reduktion des     Azofarbstoffes    aus  nitrierter     1-Diazo-2-oxynaphtbaliri-4-sulfori-          säure    und     2-Oxynaphthalin    gebildet wird, er  halten kann, wenn diese Einwirkung in al  kalischem Medium erfolgt.  



  Die neue Chromverbindung löst sich in  Wasser leicht mit     violettschwarzer    Farbe und  färbt Wolle aus     organischsaurem    - schwefel  saurem Bade in schwarzen Tönen von guten       Echtheiten.     



  <I>Beispiel:</I>  Eine durch Chromseren in saurem Medium  hergestellte Chromverbindung aus 92,2 Teilen  des     Azofarbstoffes    aus nitrierter     1-Diazo-2-          oxynaphthalin-4-sulfonsäure    und     2-Oxynaph-          thalin,

      sowie 44 Teile des mit Schwefelnatrium    reduzierten     Azofarbstoffes    aus nitrierter 1  Diazo-2-Oxynaphthalin-4-sulfonsäure und     2-          Oxynaphthalin    werden in 2000 Teilen Wasser       unter        Zusatz        von        200        Teilen        30        %iger        Na-          tronlauge,    sowie 5 Teilen Zucker in Lösung  gebracht und 4 Stunden rückfliessend gekocht.

    Hierauf kühlt man auf etwa 50 0,     neutrali-          siert        mit        10        %iger        Salzsäure,        fügt        Ameisen-          säure    zu bis zur schwach     lackmussauren     Reaktion, filtriert und isoliert die neue Chrom  verbindung durch     Aussalzen.     



  Zu demselben chromhaltigen     Azofarbstoff     gelangt man, wenn statt Natronlauge andere  Alkalien, wie zum Beispiel Kalilauge, Soda,  Pottasche, Borax,     Magnesiumoxyd,        Calcium-          hydroxyd,    Ammoniak oder     Trialkaliphosphat,     verwendet werden.



  <B> Additional patent </B> to main patent no. 166497. Process for the production of a chromium-containing azo dye. It has been found that an obromine-containing azo dye is produced by the action of the chromium-containing azo dye, which is formed from nitrated 1-diazo-2-oxynaphthalene-4-sulfonic acid and 2-oxynaphthalene by chroming the azo dye;

      on the azo dye, which is formed by reducing the azo dye from nitrated 1-diazo-2-oxynaphtbaliri-4-sulforic acid and 2-oxynaphthalene, he can keep if this action takes place in alkaline medium.



  The new chromium compound dissolves easily in water with a violet-black color and dyes wool from organic acid - sulfur acid bath in black shades with good fastness properties.



  <I> Example: </I> A chromium compound produced by chromium sera in an acidic medium from 92.2 parts of the azo dye from nitrated 1-diazo-2-oxynaphthalene-4-sulfonic acid and 2-oxynaphthalene,

      and 44 parts of the azo dye reduced with sodium sulphide from nitrated 1-diazo-2-oxynaphthalene-4-sulfonic acid and 2-oxynaphthalene are dissolved in 2000 parts of water with the addition of 200 parts of 30% strength sodium hydroxide solution and 5 parts of sugar, and 4 Cooked under reflux for hours.

    It is then cooled to about 50 °, neutralized with 10% hydrochloric acid, formic acid is added up to a weak lacquer acid reaction, the new chromium compound is filtered and isolated by salting out.



  The same chromium-containing azo dye is obtained if other alkalis, such as potassium hydroxide, soda, potash, borax, magnesium oxide, calcium hydroxide, ammonia or trialkali phosphate, are used instead of sodium hydroxide.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines chrom- haltigen Azofarbstoffes durch Einwirkung des chromhaltigen Azofarbstoffes, der dusch Chro mseren des Azofarbstoffes aus nitrierter 1- Diazo-2-oxynaphthalin-4-sulfonsäure und 2 Oxynaphthalin entsteht, auf den Azofarbstoff, der durch Reduktion des Azofarbstoffes aus nitrierter 1-Diazo-2-oxynaphthalin-4-sulfon- säure und 2 - Oxynaphthalin gebildet wird, dadurch gekennzeichnet, dass diese Einwir kung in alkalischem Medium erfolgt. PATENT CLAIM: Process for the production of a chromium-containing azo dye by the action of the chromium-containing azo dye, the shower chromes of the azo dye from nitrated 1- diazo-2-oxynaphthalene-4-sulfonic acid and 2 oxynaphthalene, on the azo dye, which is formed by reducing the azo dye nitrated 1-diazo-2-oxynaphthalene-4-sulfonic acid and 2 - oxynaphthalene is formed, characterized in that this action takes place in an alkaline medium. Die neue Chromverbindung löst sich in Wasser leicht mit violettachwarzer Farbe und färbt Wolle aus orgauischsaurem - schwefel saurem Bade in schwarzen Tönen von guten Echtheiten. The new chromium compound dissolves easily in water with a violet-black color and dyes wool from organic-sulfuric acid baths in black shades with good fastness properties.
CH170333D 1932-11-07 1932-11-07 Process for the preparation of a chromium-containing azo dye. CH170333A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH170333T 1932-11-07
CH166497T 1934-01-15

Publications (1)

Publication Number Publication Date
CH170333A true CH170333A (en) 1934-06-30

Family

ID=25718315

Family Applications (1)

Application Number Title Priority Date Filing Date
CH170333D CH170333A (en) 1932-11-07 1932-11-07 Process for the preparation of a chromium-containing azo dye.

Country Status (1)

Country Link
CH (1) CH170333A (en)

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