CH86684A - Process for the preparation of an acidic dye containing chromium. - Google Patents

Process for the preparation of an acidic dye containing chromium.

Info

Publication number
CH86684A
CH86684A CH86684DA CH86684A CH 86684 A CH86684 A CH 86684A CH 86684D A CH86684D A CH 86684DA CH 86684 A CH86684 A CH 86684A
Authority
CH
Switzerland
Prior art keywords
chromium
dye
preparation
acid
acidic dye
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 CH86684A publication Critical patent/CH86684A/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

  

      Verfahren    zur Herstellung eines     ehromhaltigen    Sauren Farbstoffs:    Es wurde gefunden, dass man den metall  empfindlichen     Azofarbstoff    aus     diazotierter          5-Nitro-2-amido-l-oxybeiizol-4-sulforisäure    und       ss-Naphtylamin    durch Behandlung mit     cbroin-          abgebenden    Mitteln in einen chromhaltigen  sauren Farbstoff überführen kann, welcher  das Chrom in     iriashierterlBirrdurrg    enthält,  indem dasselbe aus der wässerigen     Lösung     durch Soda, Natronlauge oder Ammoniak  nicht gefällt wird.

   Der     Farbstoff    ist wasser  löslich, säurebeständig, nicht kupferempfind  lich und färbt animalische Fasern aus saurein  Bad in blaugrünen, walk- und lichtechten  Tönen.  



  <I>Beispiel:</I>  5 Teile     Azofarbstoff    aus     diazotierter          5-Nitro-2-amido-l-        oxybenzol-4-sulfonsäure    und       E3-Naphtylamin    werden mit 200 Teilen     Was-          ser,        7,5        Teilen        Chromfluorid        (mit        einem        36.8        %          Cr2        0s    entsprechenden Chromgehalt)

   und 10  bis 20 Teilen Glaspulver oder der entspre  chenden     Menge    eines andern säurebindenden  Mittels, wie     Natriumacetat,        Ammoniumlaktat     und dergleichen, während 24 Stunden unter       Rückfluss    gekocht. Es scheidet sich die Chrom-         verbindung    der     Farbsäure    als     schwerlöslicher     Niederschlag aus. Derselbe wird     abfiltriert,     in kalter verdünnter Natronlauge (enthaltend  1 Teil     Na0H)    gelöst und mit Essigsäure  schwach angesäuert.

   Aus der intensiv grünen  Lösung wird der Farbstoff durch     Aussalzen    ab  geschieden,     abfiltriert,    gepresst und getrocknet.



      Process for the production of an acidic dye containing Ehrom: It has been found that the metal-sensitive azo dye from diazotized 5-nitro-2-amido-1-oxybeiizole-4-sulforic acid and s-naphthylamine by treatment with cbroin-releasing agents in a chromium-containing acid Dye can be transferred, which contains the chromium in iriashiertlBirrdurrg, in that the same is not precipitated from the aqueous solution by soda, caustic soda or ammonia.

   The dye is water-soluble, acid-resistant, not sensitive to copper and dyes animal fibers from an acid bath in blue-green, mill-fast and light-fast shades.



  <I> Example: </I> 5 parts of azo dye from diazotized 5-nitro-2-amido-l-oxybenzene-4-sulfonic acid and E3-naphthylamine are mixed with 200 parts of water, 7.5 parts of chromium fluoride (with a 36.8 % Cr2 0s corresponding chromium content)

   and 10 to 20 parts of glass powder or the corresponding amount of another acid-binding agent, such as sodium acetate, ammonium lactate and the like, refluxed for 24 hours. The chromium compound of the color acid separates out as a sparingly soluble precipitate. The same is filtered off, dissolved in cold, dilute sodium hydroxide solution (containing 1 part NaOH) and made weakly acidic with acetic acid.

   The dye is separated from the intensely green solution by salting out, filtered off, pressed and dried.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines chroin- haltigen sauren Farbstoffes, dadurch gekeirn- zeichnet, dass man den metallempfindlichen Azofarbstoff aus diazotierter 5-Nitro-2-amido- 1-oxybenzol-4-sulforisäui-e und i3-Naplity lamin finit chromabgebenden Mitteln behandelt. PATENT CLAIM: Process for the production of a chromium-containing acidic dye, characterized in that the metal-sensitive azo dye is treated from diazotized 5-nitro-2-amido-1-oxybenzene-4-sulforisäui-e and i3-Naplity lamin finite chromium-releasing agents . Der Farbstoff enthält das Chrom in mas kierter Bindung, indem dasselbe aus der wässerigen Lösung durch Soda, Natronlauge oder Ammoniak nicht gefällt wird, ist wasser löslich, säurebeständig, nicht kupferempfind- lich und färbt aniinaliche Fasern aus saurem Bad in blaugrünen, walk- und lichtechten Tönen. The dye contains the chromium in a masked bond, since it is not precipitated from the aqueous solution by soda, caustic soda or ammonia, it is water-soluble, acid-resistant, not sensitive to copper and colors anal fibers from an acidic bath in blue-green, millet-proof and lightfast Tones.
CH86684D 1917-10-12 1917-10-12 Process for the preparation of an acidic dye containing chromium. CH86684A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH86684T 1917-10-12
CH80096T 1917-10-12

Publications (1)

Publication Number Publication Date
CH86684A true CH86684A (en) 1920-09-16

Family

ID=25702625

Family Applications (1)

Application Number Title Priority Date Filing Date
CH86684D CH86684A (en) 1917-10-12 1917-10-12 Process for the preparation of an acidic dye containing chromium.

Country Status (1)

Country Link
CH (1) CH86684A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE928901C (en) * 1951-10-04 1955-06-13 Ciba Geigy Process for the production of azo dyes

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE928901C (en) * 1951-10-04 1955-06-13 Ciba Geigy Process for the production of azo dyes

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