CH91271A - 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
- CH91271A CH91271A CH91271DA CH91271A CH 91271 A CH91271 A CH 91271A CH 91271D A CH91271D A CH 91271DA CH 91271 A CH91271 A CH 91271A
- Authority
- CH
- Switzerland
- Prior art keywords
- chromium
- dye
- preparation
- acidic dye
- acid
- Prior art date
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
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Detergent Compositions (AREA)
Description
Verfahren zur Darstellung eines chromhaltigen sauren Farbstoffes. Es wurde gefunden, dass man den metall empfindlichen Azofarbstoff aus dianotierter 4-Chlor-2-amino-l-oxybenzol-6-sulfosäure und 1-Phenyl-3-methyl-5-pyrazolorr durch Behand lung mit den cbromhaltigen Komplexverbin- dungen, welche durch Einwirkung von hydro- gylgruppenhaltigen organischen Verbindungen auf alkalische Chromhydroxydsuspensionen erhalten werden, in einen chromhaltigen sauren Farbstoff 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 roten, walk- und lichtechten Tönen an.
<I>Beispiel:</I> In 600 Teilen einer Chromhy droxydhydrat- paste, enthaltend 76,5 Teile Cra0s, löst man unterhalb 70 160 Teile Ätznatron. Hierauf gibt man 90 Teile Glyzerin hinzu und erhitzt zum Kochen, bis vollständige Lösung einge treten ist.
Sodann verdünnt man auf 2400 Volumteile, versetzt mit 430 Teilen des F a.rb- stoffes aus dianotierter 4-Chlor-2-amirro-l-oxy- benzol-6-sulfosiiure und 1-Pheny 1-3-methyl-5- pyrazolon und kocht das Ganze einige Stun den am Rückflusskühler weiter, bis der Farb stoff vollständig in seine Chromverbindung übergegangen ist.
Ist dies erreicht, so ver dünnt man mit 7200 Teilen kaltem Wasser und salzt den entstandenen Farbstoff aus, nachdem der Ätzalkaliüberschuss mit Mineral säure neutralisiert worden ist. Statt Glyzerin können auch andere hydroxylgruppenhaltige, organische Verbindungen, wie Glykol, Tannin, Gallussäure, Zuckerarten, Kohlenhydrate, ver wendet werden.
Process for the preparation of an acidic dye containing chromium. It has been found that the metal-sensitive azo dye can be obtained from dianotized 4-chloro-2-amino-1-oxybenzene-6-sulfonic acid and 1-phenyl-3-methyl-5-pyrazolor by treatment with the cbromine-containing complex compounds which obtained by the action of organic compounds containing hydrogyl groups on alkaline chromium hydroxide suspensions, can be converted into a chromium-containing acidic dye,
which contains the chromium in a masked bond, while 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 stains animal fibers from an acid bath in red, mill-fast and light-fast shades.
<I> Example: </I> In 600 parts of a chromium hydroxide hydrate paste containing 76.5 parts of Cra0s, 160 parts of caustic soda are dissolved below 70. 90 parts of glycerine are then added and the mixture is heated to a boil until complete dissolution has occurred.
It is then diluted to 2400 parts by volume, mixed with 430 parts of the dye from dianotated 4-chloro-2-amirro-1-oxybenzene-6-sulfonic acid and 1-pheny 1-3-methyl-5-pyrazolone and cook the whole thing on the reflux condenser for a few hours until the dye has completely converted into its chromium compound.
Once this has been achieved, dilute it with 7200 parts of cold water and salt out the resulting dye after the excess caustic alkali has been neutralized with mineral acid. Instead of glycerine, other organic compounds containing hydroxyl groups, such as glycol, tannin, gallic acid, sugars, carbohydrates, can also be used.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH91271T | 1920-03-30 | ||
CH77248T | 1920-03-30 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH91271A true CH91271A (en) | 1921-10-17 |
Family
ID=25702029
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH91271D CH91271A (en) | 1920-03-30 | 1920-03-30 | Process for the preparation of an acidic dye containing chromium. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH91271A (en) |
-
1920
- 1920-03-30 CH CH91271D patent/CH91271A/en unknown
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