CH86690A - 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
CH86690A
CH86690A CH86690DA CH86690A CH 86690 A CH86690 A CH 86690A CH 86690D A CH86690D A CH 86690DA CH 86690 A CH86690 A CH 86690A
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 CH86690A publication Critical patent/CH86690A/en

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09BORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B45/00Complex metal compounds of azo dyes
    • C09B45/02Preparation from dyes containing in o-position a hydroxy group and in o'-position hydroxy, alkoxy, carboxyl, amino or keto groups
    • C09B45/14Monoazo compounds
    • C09B45/16Monoazo compounds containing chromium

Description

  

  Verfahren zur Herstellung eines chromhaltigen sauren Farbstoffs.    Es wurde gefunden, dass man den metall  empfindlichen     Azofarbstoff    aus     diazotiertem          5-Nitro-4-chlor-2-amido-l-oxyberrzol    und der       N-Methylensiilfosäure    der     2-Aminonapthalin-          6-sulfosäure    durch Behandlung mit chrom  abgebenden Mitteln in einen chromhaltigen,  sauren     Farbstoff    überführen kann, welcher  das Chrom in maskierter Bindung 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 saurem  Bad in blaugrünen, walk- und lichtechten  Tönen.  



  <I>Beispiel:</I>  5 Teile     Azofarbstoff    aus     diazotiertem        5-          Nitro-4-chlor= 2-amido-l-oxybenzol    und der       N-Methylensulfosäure    der     2-Aniirionaplitalin-          6-sulfosäure    werden mit 200 Teilen Wasser,  7,5 Teilen     Chromfluorid    (mit einem     36,8 '0          Crs0s    entsprechenden     Chromgehalt)    und  10-20 Teilen Glaspulver oder der entspre  chenden Menge eines andern säurebindenden  Mittels, wie     Natriumacetat,        Aminoniumlaktat     und dergleichen,

   während 24 Stunden unter         Ilückfluss    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 Aussahen ab  geschieden,     abfiltriert,        geprellt    und getrocknet.



  Process for the preparation of an acidic dye containing chromium. It has been found that the metal-sensitive azo dye made from diazotized 5-nitro-4-chloro-2-amido-1-oxyberrzol and the N-methylensilfonic acid of 2-aminonaphthalene-6-sulfonic acid can be converted into a chromium-containing, can transfer acidic dye, which contains the chromium in masked bond, 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 lightfast shades.



  <I> Example: </I> 5 parts of azo dye from diazotized 5-nitro-4-chloro = 2-amido-1-oxybenzene and the N-methylene sulfonic acid of 2-anionaplitalin 6-sulfonic acid are mixed with 200 parts of water, 7, 5 parts of chromium fluoride (with a chromium content corresponding to 36.8 '0 Crs0s) 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,

   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 weakly acidified with acetic acid. The dye is separated from the intensely green solution by looking, filtered off, peeled off and dried.

 

Claims (1)

PATENTANSPRUCH: Zerfahren zur Herstellung eines chrom haltigen, sauren Farbstoffes, dadurch gekenn zeichnet, dass man den metallempfindlichen Azofarbstoff aus diazotiertem 5-Nitro-4-chlor- 2-aniido-l-oxybenzol und der N-Methylen- sulfosäure der 2-Amiironaphtalirr-6-sulfosäure mit chromabgebenden Mitteln behandelt. PATENT CLAIM: Process for the production of a chromium-containing, acidic dye, characterized in that the metal-sensitive azo dye from diazotized 5-nitro-4-chloro-2-aniido-l-oxybenzene and the N-methylene sulfonic acid of 2-amiironaphthalene 6-sulfonic acid treated with chromium donating agents. Der Farbstoff enthält das Chrom in was 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 blaugrünen, walk- und lichtechten Tönen. The dye contains the chromium in a bonded bond, as it is not precipitated from the aqueous solution with soda, caustic soda or ammonia, is water-soluble, acid-resistant, not sensitive to copper and dyes animal fibers from an acid bath in blue-green, millet and lightfast shades .
CH86690D 1917-10-12 1917-10-12 Process for the preparation of an acidic dye containing chromium. CH86690A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH86690T 1917-10-12
CH80096T 1917-10-12

Publications (1)

Publication Number Publication Date
CH86690A true CH86690A (en) 1920-09-16

Family

ID=25702631

Family Applications (1)

Application Number Title Priority Date Filing Date
CH86690D CH86690A (en) 1917-10-12 1917-10-12 Process for the preparation of an acidic dye containing chromium.

Country Status (1)

Country Link
CH (1) CH86690A (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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