CH86681A - Process for the preparation of a chromium-containing acidic dye. - Google Patents

Process for the preparation of a chromium-containing acidic dye.

Info

Publication number
CH86681A
CH86681A CH86681DA CH86681A CH 86681 A CH86681 A CH 86681A CH 86681D A CH86681D A CH 86681DA CH 86681 A CH86681 A CH 86681A
Authority
CH
Switzerland
Prior art keywords
chromium
acid
dye
containing acidic
amido
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 CH86681A publication Critical patent/CH86681A/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

Landscapes

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

Description

  

  Verfahren zur Herstellung eines     ehronihaltigen    sauren Farbstoffs.    Es wurde gefunden, dass     inan    den metall  empfindlichen     Azofarbstoff    aus dianotiertem       5-Nitro-4-chlor-2-amido-l-oxybeiizol    und  2 -     Aniidonaphtalin    - 7 -     sulfonsäure    durch Be  handlung mit chromabgebenden Mitteln in  einen     chromhaltigen    sauren     Farbstoff    über  führen kann, welcher das Chrom in maskierter  Bindung enthält, indem dasselbe aus der       wässrigen    Lösung durch Soda, Natronlauge  oder Ammoniak nicht gefällt wird.

   Der Farb  stoff ist wasserlöslich, säurebeständig, nicht  kupferempfindlich und färbt     animalische     Fasern aus saurem Bade in blaustichig grü  nen, walk- und lichtechten Tönen.  



       Beispiel:     5 Teile     Azofarbstoff    ans     diazotiertein        5-l#Ti-          trö-4-chlor-2-amido-l-oxybeiizol    und     2-Ami-          donaphtalin    -     7-sulfonsäure    werden     finit    200 Tei  len Wasser, 7.5 Teilen Chromfluor     id    (mit  einem     36,80jo        Ci-E        0a    entsprechenden Chrom  gehalt) und 10-20 Teilen Glaspulver oder  der entsprechenden Menge eines ändern säure  bindenden Mittels, wie     Natriumacetat,

          Amino-          niumlaktat    und dergleichen, während 24 Stun  den unter     Rückfluss    gekocht. Es scheidet sich  die Chromverbindung der Farbsäure als schwer-    löslicher Niederschlag aus. Derselbe wird ab  filtriert, in kalter verdünnter Natronlauge (ent  haltend 1 Teil Na OH) gelöst und mit     Essig-          säure    schwach     aizgesäuert.    Aus der intensiv  grünen Lösung wird der     Farbstoff    durch Aus  sahen abgeschieden,     abfiltriert,    gepresst und  getrocknet.



  Process for the preparation of an acidic dye containing Ehroni. It was found that inan the metal-sensitive azo dye from dianotized 5-nitro-4-chloro-2-amido-l-oxybeiizole and 2 - aniidonaphthalene - 7 - sulfonic acid can convert into a chromium-containing acid dye by treatment with chromium donating agents, which contains the chromium in a masked bond, in that it 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 acid baths in bluish green, milled and lightfast shades.



       Example: 5 parts of azo dye ans diazotized in 5-l # titanium-4-chloro-2-amido-l-oxybeiizole and 2-amidonaphthalene-7-sulfonic acid are finely 200 parts of water, 7.5 parts of chromium fluoride (with a 36,80jo Ci-E 0a corresponding chromium content) and 10-20 parts of glass powder or the corresponding amount of an acid-binding agent such as sodium acetate,

          Amino lactate and the like, refluxed for 24 hours. The chromium compound of the color acid separates out as a sparingly soluble precipitate. It is filtered off, dissolved in cold, dilute sodium hydroxide solution (containing 1 part of Na OH) and weakly acidified with acetic acid. The dye is separated out from the intensely green solution, filtered off, pressed and dried.

 

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines chrom- baltigen sauren Farbstoffes, dadurch gekenn zeichnet, dalinan den metallempfindlichen Azofarbstoff aus dianotiertem 5-Nitro-4- eliloi-- 2 - amido- 1- oxybenzol und 2 - Amido- naphtaliii - 7 - sulfonsäure finit chromabgebenden Mitteln behandelt. PATENT CLAIM: Process for the production of a chromium-containing acidic dye, characterized in that the metal-sensitive azo dye from dianotized 5-nitro-4-eliloi-- 2 - amido-1-oxybenzene and 2-amido-naphthalene-7-sulfonic acid finitely chromium-donating Means treated. Der Farbstoff enthält das Chrom in mas kierter Bindung, indem dasselbe aus der wäss- rigen Lösung durch Soda, Natronlauge oder Ammoniak nicht gefällt wird, ist wasserlös lich, säurebeständig, nicht kupferempfindlich und färbt animalische Fasern aus saurem Bade in blaustichig grünen, walk- und licht echten 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 acid baths in bluish green, whale-and-whale light real tones.
CH86681D 1917-10-12 1917-10-12 Process for the preparation of a chromium-containing acidic dye. CH86681A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH86681T 1917-10-12
CH80096T 1917-10-12

Publications (1)

Publication Number Publication Date
CH86681A true CH86681A (en) 1920-09-16

Family

ID=25702622

Family Applications (1)

Application Number Title Priority Date Filing Date
CH86681D CH86681A (en) 1917-10-12 1917-10-12 Process for the preparation of a chromium-containing acidic dye.

Country Status (1)

Country Link
CH (1) CH86681A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE744303C (en) * 1940-06-04 1944-01-13 Ig Farbenindustrie Ag Process for the preparation of chromium-containing o-oxyazo dyes

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE744303C (en) * 1940-06-04 1944-01-13 Ig Farbenindustrie Ag Process for the preparation of chromium-containing o-oxyazo dyes

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