CH168929A - Process for the production of a new chromium-containing dye. - Google Patents

Process for the production of a new chromium-containing dye.

Info

Publication number
CH168929A
CH168929A CH168929DA CH168929A CH 168929 A CH168929 A CH 168929A CH 168929D A CH168929D A CH 168929DA CH 168929 A CH168929 A CH 168929A
Authority
CH
Switzerland
Prior art keywords
chromium
azo dye
production
oxynaphthalene
containing azo
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 CH168929A publication Critical patent/CH168929A/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. 165830.    erfahren zur Herstellung eines neuen chromhaltigen     Farbstoffes.       Es wurde gefunden, dass man einen neuen  chromhaltigen     Azofarbstoff    durch Einwirkung  des chromhaltigen     Azofarbstoffes,    der durch       Chromieren    des     Azofarbstoffes    aus nitrierter       1-Diazo-2-oxynaphthalin-4-sulfonsäure    und     2-          Oxynaphthalin    entsteht, auf den selben chrom  freien     Azofarbstoff    erhalten kann, wenn die  Einwirkung in alkalischem Medium erfolgt.  



  Der erhaltene chromhaltige     Azofarbstoff     löst sich leicht in Wasser mit     violettschwarzer     Farbe und färbt Wolle aus saurem Bade in  schwarzen Tönen von hervorragenden     Echt-          heiten.     



  <I>Beispiel:</I>  92,2 Teile des     Azofarbstoffes    aus nitrier  ter 1-     Diazo    - 2 -     oxynaphthalin    - 4-     sulfonsäure     und     2-Oxynaphthalin    werden in 2000 Teilen  Wasser suspendiert; nach Zusatz von     Chrom-          formiat,    entsprechend 18,2 Teilen     CrE0s,    wird  8 Stunden rückfliessend gekocht. Die entstan  dene unlösliche grünschwarze     Ohromverbin-          dung    wird durch Absaugen isoliert und so  dann zusammen mit 45 Teilen desselben,    jedoch chromfreien; Ausgangsfarbstoffes in  1600 Teilen Wasser verrührt.

   Man fügt 200       Teile        30%        Natronlauge        zu        und        kocht        unter          Rückfluss    4 Stunden.

   Die erhaltene violett  schwarze Lösung wird nach dem Abkühlen       auf        50-600        mit        10        %iger        Salzsäure        neutra-          lisiert,        dann        mit        etwa    3     Teilen        85        %iger     Ameisensäure schwach     lackmussauer    gestellt  und hierauf unter Vakuum zur Trockne ver  dampft.  



  Zu demselben chromhaltigen     Azofarbstoff     gelangt man, wenn statt Natronlauge andere  alkalisch wirkende Substanzen, wie zum Bei  spiel Kalilauge, Soda, Pottasche, Borax, Mag  nesiumoxyd,     Calciumoxyd,    Ammoniak oder       Trialkaliphösphat    verwendet werden.



  <B> Additional patent </B> to the main patent No. 165830. Learned about the production of a new chromium-containing dye. It has been found that a new chromium-containing azo dye can be obtained by the action of the chromium-containing azo dye, which is formed by chromating the azo dye from nitrated 1-diazo-2-oxynaphthalene-4-sulfonic acid and 2-oxynaphthalene, on the same chromium-free azo dye, if the action takes place in an alkaline medium.



  The chromium-containing azo dye obtained dissolves easily in water with a violet-black color and dyes wool from an acid bath in black shades of outstanding fastness.



  <I> Example: </I> 92.2 parts of the azo dye from nitrated 1-diazo-2-oxynaphthalene-4-sulfonic acid and 2-oxynaphthalene are suspended in 2000 parts of water; After adding chromium formate, corresponding to 18.2 parts of CrE0s, the mixture is refluxed for 8 hours. The resulting insoluble green-black ear compound is isolated by suction and then together with 45 parts of the same, but chromium-free; Stirring the starting dye in 1600 parts of water.

   200 parts of 30% sodium hydroxide solution are added and the mixture is refluxed for 4 hours.

   The violet-black solution obtained is, after cooling to 50-600, neutralized with 10% hydrochloric acid, then made weakly lacquer wall with about 3 parts of 85% formic acid and then evaporated to dryness under vacuum.



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

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines neuen chrom- haltigen Azofarbstoffes durch Einwirkung des chromhaltigen Azofarbstoffes, der durch Chromieren des Azofarbstoffes aus nitrierter 1-Diazo-2-oxynaphthalin-4-sulfonsäure und 2- Oxynaphthalin entsteht, auf den selben chrom freien Azofarbstoff, dadurch gekennzeichnet, dass die Einwirkung in alkalischem Medium erfolgt. PATENT CLAIM: Process for the production of a new chromium-containing azo dye by the action of the chromium-containing azo dye, which is formed by chromating the azo dye from nitrated 1-diazo-2-oxynaphthalene-4-sulfonic acid and 2-oxynaphthalene, on the same chromium-free azo dye, characterized that the action takes place in an alkaline medium. Der erhaltene chromhaltige Azofarbstoff löst sich leicht in Wasser mit violettschwar- zer Farbe und färbt Wolle aus saurem Bade in schwarzen Tönen von hervorragenden Echtheitseigenschaften. The chromium-containing azo dye obtained dissolves easily in water with a violet-black color and dyes wool from an acid bath in black shades with excellent fastness properties.
CH168929D 1932-11-08 1932-11-08 Process for the production of a new chromium-containing dye. CH168929A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH168929T 1932-11-08
CH165830T 1932-11-08

Publications (1)

Publication Number Publication Date
CH168929A true CH168929A (en) 1934-04-30

Family

ID=25718167

Family Applications (1)

Application Number Title Priority Date Filing Date
CH168929D CH168929A (en) 1932-11-08 1932-11-08 Process for the production of a new chromium-containing dye.

Country Status (1)

Country Link
CH (1) CH168929A (en)

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