CH86685A - 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
- CH86685A CH86685A CH86685DA CH86685A CH 86685 A CH86685 A CH 86685A CH 86685D A CH86685D A CH 86685DA CH 86685 A CH86685 A CH 86685A
- Authority
- CH
- Switzerland
- Prior art keywords
- chromium
- acid
- dye
- preparation
- 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
- C09B45/02—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 ebromhaltigen sauren Farbstoff. Es wurde gefunden, dass tnan den metall empfindlichen Azofarbstoff aus diazotierter 6-Nitro-2-amido-l-oxybenzol-4-sulfonsäure und P-Naphtylamin 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 grünen, walk- und lichtechten Tönen.
<I>Beispiel:</I> 5 Teile Azofarbstoff aus diazotierter 6.Nitro-2-amido-l-oxybenzol-4-sulfonsäure und @-Naphtylamitt werden tnit 200 Teilen Was ser, 7,5 Teilen Chromfluorid (tnit einem 36,8'/'o Cra Os entsprechenden Chromgehalt) und 10 bis 20 Teilen Glaspulver oder der entspre chenden Menge eines andern säurebindenden Mittels, wie Natriumacetat, Ammoniumlaktat und dergleichen,
während 24 Stunden unter Rückfluss gekocht. Es scheidet sich die lUhrom- verbindung der Farbsäure als schwerlöslichet- Niederschlag aus. Derselbe wird abfiltriert, in kalter verdünnter Natronlauge (enthaltend 1 Teil NaOH) gelöst und tnit Essigsäure schwach angesäuert. Aus der intensiv grünen Lösung wird der Farbstoff durch Aussalzen ab geschieden, abfiltriert, gepresst und getrocknet.
Process for the preparation of an ebromine-containing acidic dye. It has been found that tnan can convert the metal-sensitive azo dye from diazotized 6-nitro-2-amido-1-oxybenzene-4-sulfonic acid and p-naphthylamine into a chromium-containing acid dye by treatment with chromium-releasing agents, which masked the chromium Binding contains, 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 green, mill-fast and light-fast shades.
<I> Example: </I> 5 parts of azo dye from diazotized 6th nitro-2-amido-1-oxybenzene-4-sulfonic acid and @ -naphthylamide are mixed with 200 parts of water, 7.5 parts of chromium fluoride (with a 36, 8 '/' o Cra Os corresponding chromium content) and 10 to 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 poorly 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 salting out, filtered off, pressed and dried.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH80096T | 1917-10-12 | ||
CH86685T | 1917-10-12 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH86685A true CH86685A (en) | 1920-09-16 |
Family
ID=25702626
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH86685D CH86685A (en) | 1917-10-12 | 1917-10-12 | Process for the preparation of an acidic dye containing chromium. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH86685A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE928901C (en) * | 1951-10-04 | 1955-06-13 | Ciba Geigy | Process for the production of azo dyes |
-
1917
- 1917-10-12 CH CH86685D patent/CH86685A/en unknown
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE928901C (en) * | 1951-10-04 | 1955-06-13 | Ciba Geigy | Process for the production of azo dyes |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CH86685A (en) | Process for the preparation of an acidic dye containing chromium. | |
CH86686A (en) | Process for the preparation of an acidic dye containing chromium. | |
CH86690A (en) | Process for the preparation of an acidic dye containing chromium. | |
CH86694A (en) | Process for the preparation of an acidic dye containing chromium. | |
CH86684A (en) | Process for the preparation of an acidic dye containing chromium. | |
CH86692A (en) | Process for the preparation of an acidic dye containing chromium. | |
CH86691A (en) | Process for the preparation of an acidic dye containing chromium. | |
CH86682A (en) | Process for the preparation of an acidic dye containing chromium. | |
CH86689A (en) | Process for the preparation of an acidic dye containing chromium. | |
CH86693A (en) | Process for the preparation of an acidic dye containing chromium. | |
CH86679A (en) | Process for the preparation of a chromium-containing acidic dye. | |
CH86680A (en) | Process for the preparation of a chromium-containing acidic dye. | |
CH86688A (en) | Process for the preparation of an acidic dye containing chromium. | |
CH86687A (en) | Process for preparing a chromium-containing acidic dye. | |
CH86681A (en) | Process for the preparation of a chromium-containing acidic dye. | |
CH86683A (en) | Process for the preparation of an acidic dye containing chromium. | |
CH87139A (en) | Process for the preparation of an acidic dye containing chromium. | |
DE1544524C3 (en) | ||
CH86974A (en) | Process for the preparation of an acidic dye containing chromium. | |
CH86976A (en) | Process for the preparation of an acidic dye containing chromium. | |
CH86975A (en) | Process for the preparation of an acidic dye containing chromium. | |
CH86979A (en) | Process for the preparation of an acidic dye containing chromium. | |
CH203039A (en) | Process for the preparation of an azo dye containing complex bonded copper. | |
CH194665A (en) | Process for the preparation of a metal-containing trisazo dye. | |
CH205818A (en) | Process for the production of a new, metal-containing stain dye. |