CH171595A - 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
CH171595A
CH171595A CH171595DA CH171595A CH 171595 A CH171595 A CH 171595A CH 171595D A CH171595D A CH 171595DA CH 171595 A CH171595 A CH 171595A
Authority
CH
Switzerland
Prior art keywords
chromium
dye
azo dye
dissolves
blue
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 CH171595A publication Critical patent/CH171595A/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

Landscapes

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

Description

  

  Zusatzpatent zum Hauptpatent Nr. 167803.    Verfahren zur     Illerstellung    eines     ehromhaltigen        Azofarbstoffes.       Es wurde gefunden, dass man einen     chrom-          haltigen        Azofarbstoff    herstellen kann, wenn       rnan    den     Azofarbstoff    aus     diazotierter        1-          Amirro-2-oxyrraphthalin-4-srrlforisäure    und     2-          Oxyrraphthalin    mit einem chromabgebenden  Mittel in solchen Mengen,

   dass der     chromier-          baren    Gruppe des     Farbstoffmoleküls    weniger  als 1 Atom Chrom entspricht, sowie in Ge  genwart löslicher Salze organischer Säuren  behandelt.  



  Der erhaltene chromhaltige Farbstoff  stellt ein     violettschwarzes    Pulver dar, das  sich in Wasser mit     rotstichigblauer,    rot  dichroitischer Farbe leicht löst. In 10     %iger          Sodalösung    und in 10     %iger    Natronlauge  löst sich der Farbstoff mit     rotstichigblauer     Farbe, während er sich in konzentrierter  Schwefelsäure mit     grünstichigblauer    Farbe  löst. Aus     organischsaurem-schwefelsaurem     Bade wird Wolle in echten marineblauen  Tönen gefärbt.  



       Beispiel:     In einem Druckgefäss werden 83,2 Teile  es     Azofarbstoffes    aus     diazotierter    1-Amino-         2-oxyrraphthalin-4-sulfonsäur-e    und     2-Oxy-          naphthalin    in 1200 Teilen Wasser aufge  schlämmt. Hierauf gibt man 10     Vol.-Teile     30     o/oiger    Natronlauge, 30 Teile     Natrium-          formiat,    sowie eine     Chromformiatlösung,    ent  sprechend 8 Teilen     Crs0s    zu und erhitzt  3-4 Stunden auf 120-130 0.

   Nach dem Er  kalten wird von geringen Mengen unlöslicher  Anteile     abfiltriert    und die     schwärzlichblaue     Lösung im Vakuum zur Trockne verdampft.  



  Zu demselben Farbstoffe gelangt man,  wenn statt     Chromformiat    andere chromab  gebende Mittel; wie z. B.     Chromfluorid,     Chromacetat,     benzolsulfonsaurPes    Chrom oder  Gemische solcher     Chromierungsmittel    ver  wendet werden.  



  Ebenso wird der gleiche     Farbstoff    erhalten,  wenn das im Beispiele verwendete     Natrium-          formiat    durch andere lösliche Salze organischer       Säuren;    wie z. B.     Natriumacetat    oder durch       Natriumoxalat    ersetzt wird.



  Additional patent to main patent No. 167803. Process for the production of an azo dye containing Ehrom. It has been found that a chromium-containing azo dye can be produced if the azo dye is made from diazotized 1-amirro-2-oxyrraphthalene-4-syrlforic acid and 2-oxyrraphthalene with a chromium-releasing agent in such amounts

   that the chromable group of the dye molecule corresponds to less than 1 atom of chromium, as well as treated in the presence of soluble salts of organic acids.



  The chromium-containing dye obtained is a violet-black powder which easily dissolves in water with a reddish blue, red dichroic color. In 10% soda solution and in 10% sodium hydroxide solution, the dye dissolves with a reddish blue color, while it dissolves in concentrated sulfuric acid with a greenish blue color. From organic acid-sulfuric acid bath, wool is dyed in real navy blue tones.



       Example: 83.2 parts of the azo dye made from diazotized 1-amino-2-oxyrraphthalene-4-sulfonic acid and 2-oxynaphthalene are suspended in 1200 parts of water in a pressure vessel. 10 parts by volume of 30% sodium hydroxide solution, 30 parts of sodium formate and a chromium formate solution, corresponding to 8 parts of CrsOs, are then added and the mixture is heated to 120-130 ° for 3-4 hours.

   After the cold, small amounts of insoluble components are filtered off and the blackish-blue solution is evaporated to dryness in vacuo.



  The same dyes are obtained if, instead of chromium formate, other chromium donating agents; such as B. chromium fluoride, chromium acetate, benzenesulfonic acid chromium or mixtures of such chromating agents can be used.



  The same dye is also obtained if the sodium formate used in the example is replaced by other soluble salts of organic acids; such as B. sodium acetate or is replaced by sodium oxalate.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines chrom- haltigen Azofarbstoffes, dadurch gekennzeich- net, dass man den Azofarbstof aus diazo- tierter 1-Amino-2-oxynaphthalin-4-sulfonsäure und 2-Oxynaphthalin mit einem chromab gebenden Mittel in solchen Mengen, dass der chromierbaren Gruppe des Parbstoffmoleküls weniger als 1 Atom Chrom entspricht, sowie in Gegenwart löslicher Salze organischer Säuren behandelt. PATENT CLAIM: A process for the production of a chromium-containing azo dye, characterized in that the azo dye from diazo-tated 1-amino-2-oxynaphthalene-4-sulfonic acid and 2-oxynaphthalene with a chromium-donating agent in such amounts that the chromable group of the paraffin molecule corresponds to less than 1 atom of chromium, and treated in the presence of soluble salts of organic acids. Der erhaltene chromhaltige Farbstoff stellt ein violettschwarzes Pulver dar, das sich in Wasser mit rotstichigblauer, rotdichroi- tischer Farbe leicht löst. In 10 o/oiger Soda lösung und in 10 o/oiger Natronlauge löst sich der Farbstoff mit rotstichigblauer Farbe, während er sich in konzentrierter Schwefel säure mit grünstichigblauer Farbe löst. Aus organischsaurem-schwefelsaurem Bade wird Wolle in echten marineblauen Tönen gefärbt. The chromium-containing dye obtained is a violet-black powder which easily dissolves in water with a reddish-blue, red dichroic color. The dye dissolves with a reddish blue color in 10% soda solution and in 10% sodium hydroxide solution, while it dissolves in concentrated sulfuric acid with a greenish blue color. From organic acid-sulfuric acid bath, wool is dyed in real navy blue tones.
CH171595D 1933-01-25 1933-01-25 Process for the preparation of a chromium-containing azo dye. CH171595A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH167803T 1933-01-25
CH171595T 1933-01-25

Publications (1)

Publication Number Publication Date
CH171595A true CH171595A (en) 1934-08-31

Family

ID=25718465

Family Applications (1)

Application Number Title Priority Date Filing Date
CH171595D CH171595A (en) 1933-01-25 1933-01-25 Process for the preparation of a chromium-containing azo dye.

Country Status (1)

Country Link
CH (1) CH171595A (en)

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