CH86978A - 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
- CH86978A CH86978A CH86978DA CH86978A CH 86978 A CH86978 A CH 86978A CH 86978D A CH86978D A CH 86978DA CH 86978 A CH86978 A CH 86978A
- Authority
- CH
- Switzerland
- Prior art keywords
- dye
- chromium
- preparation
- acid
- acidic dye
- 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
- C09B45/01—Complex metal compounds of azo dyes characterised by the method of metallisation
-
- 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)
- Coloring Foods And Improving Nutritive Qualities (AREA)
- Coloring (AREA)
Description
\'erfahren zur Herstellung eines eliroinlialtigen sauren Farbstoff-. Es wurde gefunden, dah man den metall empfindlichen Azofarbstoff aus diazotiertein 4-Nitro-2-ainino-l-oxybenzol und 1-oxynapli- talin-5-sulfosiiiire durch Behandlung in der Wärme mit einfach elironisauren Salzen am besten bei Gegenwart eines Reduktionsmittels und eines alkalibindenden -Mittels,
zum Bei spiel Aininoniumsulfat und NatriLunthiosulfat, in einen chromhaltigen, sauren Farbstoff über führen 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 wasserlöslich, säure beständig, nicht kupferempfindlich und färbt animalische Fasern aus saurein Bad in walk und lichtechten violettbraunen Tönen.
Beispiel: 5 Teile Azofarbstoff aus diazotiertein 4-Niti,o-2-amino-l-oxybenzol und 1-oxynaph- talin-5-sulfosäure und 1,5 Teile Kaliurnchro- mat werden in 125 Teilen Wasser 1 Stunde gekocht, wobei die ursprünglich violette Farbe der Lösung violettbraun geworden ist. Die Chromverbindung wird durch Aussahen ab geschieden, abfiltriert und getrocknet.
\ 'experienced for the production of an eliroinlialtigen acidic dye. It has been found that the metal-sensitive azo dye from diazotized 4-nitro-2-ainino-1-oxybenzene and 1-oxynapitaline-5-sulfosiiire by treatment in heat with simple elironic acid salts is best in the presence of a reducing agent and a alkali-binding agents,
For example, ammonium sulfate and sodium thiosulfate, can lead to a chromium-containing, acidic dye, which contains the chromium in masked bond, in that the same is not precipitated from the aqueous solution by soda, sodium hydroxide or ammonia.
The dye is water-soluble, acid-resistant, not sensitive to copper and dyes animal fibers from acidic bath in walk and lightfast violet-brown tones.
Example: 5 parts of azo dye made from diazotized 4-niti, o-2-amino-1-oxybenzene and 1-oxynaphthalene-5-sulfonic acid and 1.5 parts of potassium chromate are boiled in 125 parts of water for 1 hour, the originally The purple color of the solution has turned purple-brown. The chromium compound is separated off by sight, filtered off and dried.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH86978T | 1916-12-23 | ||
CH77248T | 1920-03-30 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH86978A true CH86978A (en) | 1920-11-01 |
Family
ID=25702026
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH86978D CH86978A (en) | 1916-12-23 | 1916-12-23 | Process for the preparation of an acidic dye containing chromium. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH86978A (en) |
-
1916
- 1916-12-23 CH CH86978D patent/CH86978A/en unknown
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