CH86693A - 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
CH86693A
CH86693A CH86693DA CH86693A CH 86693 A CH86693 A CH 86693A CH 86693D A CH86693D A CH 86693DA CH 86693 A CH86693 A CH 86693A
Authority
CH
Switzerland
Prior art keywords
chromium
acid
dye
preparation
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 CH86693A publication Critical patent/CH86693A/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

  

  Verfahren zur Herstellung eines     chromhaltigen        sauren        Farbstoffs.       Es wurde gefunden, dass man den metall  empfindlichen     Azofarbstoff    aus     diazotierter          4-Nitro-2-amido-l-oxybenzol-6-sulfosäure    und  der     N--,Nlethylensulfosäure    des     ss-Naphtylamins     durch Behandlung mit     chromabgebenden     Mitteln in einen chromhaltigen, sauren Farb  stoff     überführen    kann, welcher das Chrom  in maskierter Bindung enthält, indem das  selbe aus der wässerigen Lösung durch     Soda,

       Natronlauge oder Ammoniak nicht gefällt  wird. Der     Farbstoff    ist wasserlöslich, säure  beständig, nicht kupferempfindlich und färbt  animalische Fasern aus saurem Bad in flaschen  grünen, walk- und lichtechten Tönen.  



  <I>Beispiel:</I>  5 Teile     Azofarbstoff    aus     diazotierter        4-          Nitro-2-amido-l-oxybenzol-6-sulfosäure    und  der     N-Methylensulfosäure    des     @-Naplityl-          amiiis    werden mit 200 Teilen Wasser, 7;5  Teilen     Chromfluorid    (mit einem 36,80o     Cn>0a     entsprechenden Chromgehalt) und 10-20  Teilen Glaspulver oder der entsprechenden  Menge eines andern säurebindenden Mittels,  wie     Natriumacetat,        Ammoniumlaktat    und  dergleichen, während 24     Stunden    unter Rück  floss gekocht.

   Es scheidet sich 'die Chrom-         verbindung    der Farbsäure als     schwerlöslicher          Niederschlag    aus. Derselbe wird     abfiltriert,     in kalter, verdünnter Natronlauge (enthaltend  1 Teil     NaOH)    gelöst und mit Essigsäure  schwach angesäuert. Aus der intensiv grünen       Lösung    wird der     Farbstoff    durch     Aussalzen          abgeschieden,        abfiltriert,        gepreit    und ge  trocknet.



  Process for the preparation of a chromium-containing acidic dye. It has been found that the metal-sensitive azo dye from diazotized 4-nitro-2-amido-1-oxybenzene-6-sulfonic acid and the N -, Nlethylene sulfonic acid of ß-naphthylamine by treatment with chromium donating agents in a chromium-containing, acidic dye which contains the chromium in masked bond, by removing the same from the aqueous solution with soda,

       Sodium hydroxide or ammonia is not precipitated. The dye is water-soluble, acid-resistant, not sensitive to copper and dyes animal fibers from an acid bath in bottle-green, mill-fast and light-fast shades.



  <I> Example: </I> 5 parts of azo dye from diazotized 4-nitro-2-amido-1-oxybenzene-6-sulfonic acid and the N-methylene sulfonic acid of @ -naplityl amiiis are mixed with 200 parts of water, 7.5 parts Chromium fluoride (with a chromium content corresponding to 36.80 ° Cn> 0a) and 10-20 parts of glass powder or the corresponding amount of another acid-binding agent, such as sodium acetate, ammonium lactate and the like, boiled under reflux 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 weakly acidified with acetic acid. The dye is deposited from the intensely green solution by salting out, filtered off, brushed and dried.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines chrom haltigen, sauren Farbstoffes, dadurch gekenn zeichnet, dar man den metallempfindlichen Azofarbstoff aus diazotierter 4-Nitro-?-amido- 1-oxybeiizol-6-sulfosäure und der N-Methy len- sulfosäure des i3-Naphtylamins mit clirom- abgebenden Mitteln behandelt. PATENT CLAIM: A process for the production of a chromium-containing, acidic dye, characterized in that the metal-sensitive azo dye is made from diazotized 4-nitro -? - amido-1-oxybeiizole-6-sulfonic acid and the N-methylene sulfonic acid of i3-naphthylamine Treated with clirom-releasing agents. Der Farbstoff enthält das Chrom in mas kierter Bindung, indem dasselbe aus der wäs serigen Lösung durch Soda, Natronlauge oder Ammoniak nicht gefällt wird, ist wasserlös lich, säurebeständig, nicht kupferempfindlich und färbt animalische Fasern aus saurem Bad in flaschengrünen, walk- und lichtechten Tönen. The dye contains the chromium in a masked bond, as 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 animal fibers from an acid bath in bottle-green, whale-fast and light-fast shades .
CH86693D 1917-10-12 1917-10-12 Process for the preparation of an acidic dye containing chromium. CH86693A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH86693T 1917-10-12
CH80096T 1917-10-12

Publications (1)

Publication Number Publication Date
CH86693A true CH86693A (en) 1920-09-16

Family

ID=25702634

Family Applications (1)

Application Number Title Priority Date Filing Date
CH86693D CH86693A (en) 1917-10-12 1917-10-12 Process for the preparation of an acidic dye containing chromium.

Country Status (1)

Country Link
CH (1) CH86693A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1006988B (en) * 1954-03-05 1957-04-25 Geigy Ag J R Process for the production of chromium-containing azo dyes

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1006988B (en) * 1954-03-05 1957-04-25 Geigy Ag J R Process for the production of chromium-containing azo dyes
DE1006988C2 (en) * 1954-03-05 1957-10-03 Geigy Ag J R Process for the production of chromium-containing azo dyes

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