CH170330A - 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
CH170330A
CH170330A CH170330DA CH170330A CH 170330 A CH170330 A CH 170330A CH 170330D A CH170330D A CH 170330DA CH 170330 A CH170330 A CH 170330A
Authority
CH
Switzerland
Prior art keywords
azo dye
oxynaphthalene
chromium
preparation
dye containing
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 CH170330A publication Critical patent/CH170330A/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

  

  Zusatzpatent zum Hauptpatent     Nr.   <B>166497.</B>    Verfahren zur Herstellung eines     ehromhaltigen        Azofarbstoffes.       Es wurde gefunden,     dass    man einen     ebrom-          haltigen        Azofarbstoff    durch Einwirkung des       ehromhaltigen        Azofarbstoffes,

      der durch     Chro-          mieren    des     Azofarbstoffes        aus.nitrierter        1-Dia-          zo-2-oxynaphtbaliii-4-sulfoDsäure    und     2-Oxy-          naphthalin    entsteht, auf den     Azofarbsto:ff    aus       diazotierter        1-Amino-2-oxynaphtbalin-4-sul-          fonsäure    und     2-Oxynaphtbalin    erhalten kann,  wenn diese Einwirkung in alkalischem Me  dium erfolgt.  



  Der gebildete     ehromhaltige        Azolarbstoff     stellt ein dunkel gefärbtes Pulver dar, das  in Wasser mit blauschwarzer Farbe leicht  löslich ist. Er färbt Wolle aus saurem Bade  in schwarzen Tönen von sehr guten     Echt-          heiten.     



  <I>Beispiel:</I>  <B>92,2</B> Teile des     Azolarbstoffes    aus nitrier  ter     1-Diazo-2-oxynaphtholin-4-sulfons#,ure    und       2-Oxyiiaphtbalin        werdenin        1800TeilenWas-          ser    verrührt und nach Zusatz einer     Chrom-          formiatlösung,    enthaltend<B>18,2</B> Teile     Cr203,       <B>6</B> Stunden rückfliessend gekocht.

   Die ent  standene     Stispension    der     grünlichschwarzen     Chromverbindung wird abgesaugt, mit 1200  Teilen Wasser verrührt und mit 40 'feilen  des     Azofarbstoffes    aus     diazotierter        1-Amino-          2-oxynaphthalin-4-sulforisäure    und     2-Oxy-          i)aphthalitiversetzt.IE[ieraufwirdmit160Teilen          30"/oiger    Natronlauge alkalisch gestellt und  das Ganze 4 Stunden unter     Rückfluss    gekocht.

    Nach dem Abkühlen auf<B>50-600</B> wird mit       10        %        iger        Salzsäure        neutralisiert,        der        gebildete     gemischte,     ehromhaltige    Farbstoff     ausgesal-          zen    filtriert und getrocknet.  



  Zu demselben     ehromhaltiD-en        Azofarbstoff     gelangt man, wenn statt Natronlauge andere  Alkalien, wie z. B. Kalilauge, Soda, Pottasche,  Borax,     Magnesiumoxyd,        Caleiumbydroxyd,     Ammoniak oder     Trialkaliphosphat    verwendet  werden.



  Additional patent to main patent no. <B> 166497. </B> Process for the production of an azo dye containing Ehrom. It has been found that an azo dye containing ebromine can be obtained by the action of the azo dye containing ebromine,

      which is formed by chromating the azo dye from nitrated 1-diazo-2-oxynaphthalene-4-sulfoDic acid and 2-oxynaphthalene, to the azo dye from diazotized 1-amino-2-oxynaphthalene-4-sulfo Fonsäure and 2-Oxynaphtbalin can get, if this action takes place in alkaline Me medium.



  The azolar material containing Ehrom is a dark colored powder which is easily soluble in water with a blue-black color. It dyes wool from an acid bath in black shades of very good fastness.



  <I> Example: </I> <B> 92.2 </B> parts of the azo substance from nitrated 1-diazo-2-oxynaphtholine-4-sulfone, ure and 2-oxyiiaphtbalin are stirred in 1,800 parts of water and then added Addition of a chromium formate solution containing <B> 18.2 </B> parts of Cr203, refluxed for <B> 6 </B> hours.

   The resulting suspension of the greenish-black chromium compound is filtered off with suction, stirred with 1200 parts of water and mixed with 40 'files of the azo dye from diazotized 1-amino-2-oxynaphthalene-4-sulforic acid and 2-oxy- i) aphthalite. oiger sodium hydroxide solution made alkaline and refluxed for 4 hours.

    After cooling to <B> 50-600 </B>, it is neutralized with 10% hydrochloric acid, and the mixed, ethylomic dye formed is salted out, filtered out and dried.



  The same EhromhaltiD-en azo dye is obtained if, instead of sodium hydroxide solution, other alkalis, such as e.g. B. potassium hydroxide, soda, potash, borax, magnesium oxide, calcium hydroxide, ammonia or trialkali phosphate can be used.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines obrom- haltigen Azofarbstoffes durch Einwirkung des ehromhaltigen Azofarbstoffes, der durch Chromieren des Azofarbstoffes aus nitrierter 1-Diazo-2-oxynaphthalin-4-stilfonsätire und 2-Oxynaphthalin entsteht, PATENT CLAIM: Process for the production of an azo dye containing obromine by the action of the azo dye containing Ehrom, which is formed by chromating the azo dye from nitrated 1-diazo-2-oxynaphthalene-4-stilfonsätire and 2-oxynaphthalene, auf den Azofarb- stoff aus diazotierter 1-Amino-2-oxynaphtha- lin-4-gulfonsäLire und 2-Oxynaphthalin, da durch gekennzeichnet, dass dieseEinwirkung in alkalischem Medium erfolgt. Der gebildete ehrombaltige Azofarbstoff stellt ein dunkel gefärbtes Pulver dar, das in Wasser mit blauschwarzer Farbe leicht löslich ist. Es färbt Wolle aus saurem Bade in schwarzen Tönen von sehr guten Echt- heiten. on the azo dye made from diazotized 1-amino-2-oxynaphthaline-4-sulfonic acid and 2-oxynaphthalene, as it is characterized in that this action takes place in an alkaline medium. The azo dye containing Ehrombi that is formed is a dark-colored powder that is easily soluble in water with a blue-black color. It dyes wool from an acid bath in black shades of very good fastness.
CH170330D 1932-11-07 1932-11-07 Process for the preparation of a chromium-containing azo dye. CH170330A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH170330T 1932-11-07
CH166497T 1934-01-15

Publications (1)

Publication Number Publication Date
CH170330A true CH170330A (en) 1934-06-30

Family

ID=25718312

Family Applications (1)

Application Number Title Priority Date Filing Date
CH170330D CH170330A (en) 1932-11-07 1932-11-07 Process for the preparation of a chromium-containing azo dye.

Country Status (1)

Country Link
CH (1) CH170330A (en)

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