CH170335A - Process for the production of a chromium-containing azo dye which coloring in shades of pink. - Google Patents

Process for the production of a chromium-containing azo dye which coloring in shades of pink.

Info

Publication number
CH170335A
CH170335A CH170335DA CH170335A CH 170335 A CH170335 A CH 170335A CH 170335D A CH170335D A CH 170335DA CH 170335 A CH170335 A CH 170335A
Authority
CH
Switzerland
Prior art keywords
chromium
azo dye
pink
containing azo
coloring
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 CH170335A publication Critical patent/CH170335A/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

Description

  

      Zusatzpatent    zum Hauptpatent Nr. 167805.    Verfahren zur Herstellung eines in     Rosatönen    färbenden chromhaltigen     Azofarbstoffes.       Es wurde     gefunden,    dass man einen in       Rosatönen    färbenden chromhaltigen     Azofarb-          stoff    aus dem blaurot färbenden     chromhalti-          gen        Azofarbstoff,

      der durch Erhitzen des     Azo-          farbstoffes    aus nitrierter     1-Diazo-2-oxynaph-          thalin-4-sulfonsäure    und     1-Phenyl-3-methyl-          5-pyrazolon    mit     Chrom$uorid    erhalten wird,  herstellen kann, wenn man das den blaurot  färbenden chromhaltigen     Azofarbstoff    enthal  tende     Reaktionsgernisch    weiter erhitzt.  



  <I>Beispiel:</I>  295 Teile nitrierte 1-     Diazo    - 2 -     oxynaph-          thalin    - 4 -     sulfonsäure    werden in alkalischer  Lösung mit 180 Teilen     1-Phenyl-3-methyl-          5-pyrazz)lon        gekuppelt.    Der gebildete     Farbstoff     wird durch Zusatz von Säure abgeschieden  und     abfiltriert.     



  Die erhaltene     Farbstoffpaste    wird mit etwa  11000 Teilen Wasser zum Sieden erhitzt und  mit 2000 Gewichtsteilen einer 6     o/oigen        Chrom-          fluoridlösung    versetzt. Das Gemisch wird hier-    auf 10-12 Stunden zum Kochen erhitzt. Nach  dieser Zeit hat sich der blaurot färbende  chromhaltige     Farbstoff    gebildet. Das Reak  tionsgemisch wird dann während 25-30 Stun  den im Sieden gehalten. Die in kristalliner  Form abgeschiedene Chromverbindung wird  heiss     abfiltriert    und mit etwa 800 Teilen kal  tem Wasser gewaschen.



      Additional patent to main patent no. 167805. Process for the production of a chromium-containing azo dye which coloring in shades of pink. It has been found that a chromium-containing azo dye coloring in shades of pink can be obtained from the blue-red coloring chromium-containing azo dye,

      which is obtained by heating the azo dye from nitrated 1-diazo-2-oxynaphthalene-4-sulfonic acid and 1-phenyl-3-methyl-5-pyrazolone with chromium fluoride, if you can produce the bluish-red coloring Chromium-containing azo dye containing reaction mixture is heated further.



  Example: 295 parts of nitrated 1-diazo-2-oxynaphthalene-4-sulfonic acid are coupled in an alkaline solution with 180 parts of 1-phenyl-3-methyl-5-pyrazine ion. The dyestuff formed is deposited by adding acid and filtered off.



  The dye paste obtained is heated to the boil with about 11,000 parts of water, and 2,000 parts by weight of a 6% chromium fluoride solution are added. The mixture is heated to a boil for 10-12 hours. After this time, the blue-red coloring chromium-containing dye has formed. The reaction mixture is then kept boiling for 25-30 hours. The chromium compound deposited in crystalline form is filtered off while hot and washed with about 800 parts of cold water.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines in Rosa tönen färbenden chromhaltigen Azofarbstoffes aus dem blaurot färbenden chromhaltigen Azofarbstoff, der durch Erhitzen des Azofarb- stoffes aus nitrierter 1-Diazo-2-oxynaphthalin- 4-sulfonsäure und 1-Phenyl-3-methyl-5-pyr- azolon mit Chromfluor id erhalten wird, dadurch gekennzeichnet, dass das den blaurot färben den chromhaltigen Azofarbstoff enthaltende Reaktionsgemisch weiter erhitzt wird. PATENT CLAIM: Process for the production of a pink-colored chromium-containing azo dye from the blue-red coloring chromium-containing azo dye, which is produced by heating the azo dye from nitrated 1-diazo-2-oxynaphthalene-4-sulfonic acid and 1-phenyl-3-methyl-5- pyrazolone with chromium fluoride is obtained, characterized in that the reaction mixture containing the chromium-containing azo dye to dye the blue-red color is further heated.
CH170335D 1933-02-22 1933-02-22 Process for the production of a chromium-containing azo dye which coloring in shades of pink. CH170335A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH167805T 1933-02-22
CH170335T 1933-02-22

Publications (1)

Publication Number Publication Date
CH170335A true CH170335A (en) 1934-06-30

Family

ID=25718466

Family Applications (1)

Application Number Title Priority Date Filing Date
CH170335D CH170335A (en) 1933-02-22 1933-02-22 Process for the production of a chromium-containing azo dye which coloring in shades of pink.

Country Status (1)

Country Link
CH (1) CH170335A (en)

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