CH172596A - Process for the preparation of a chromium-containing azo dye. - Google Patents
Process for the preparation of a chromium-containing azo dye.Info
- Publication number
- CH172596A CH172596A CH172596DA CH172596A CH 172596 A CH172596 A CH 172596A CH 172596D A CH172596D A CH 172596DA CH 172596 A CH172596 A CH 172596A
- Authority
- CH
- Switzerland
- Prior art keywords
- oxynaphthalene
- chromium
- dye
- azo dye
- dissolves
- 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
Zusatzpatent zum Hauptpatent Nr. 169697. Verfahren zur Herstellung eines chromhaltigen Azofarbstoffes. Es wurde gefunden, dass man einen chrom- haltigen Azofarbstoff aus dem C'xemisch des Azofarbstoffes aus diazotierter 1-Amino-2-oxy- naphthalin-4-sulfonsäure und 2-Oxynaphthalin mit dem Azofarbstoffe aus diazotierter2-Amino- 1-oxynaphthalin-4.8-disulfonsäure und <RTI
ID="0001.0015"> 2-Oxy- naphthalin herstellen kann, wenn man dieses Gemisch, ein Chromierungsmittel und eine hydroxylgruppenhaltige organische Verbin dung in ätzalkalischem Medium aufeinander einwirken lässt.
Der erhaltene chromhaltige Farbstoff stellt ein schwarzviolettes Pulver dar, das sich in Wasser, 10 %iger Sodalösung und 10 o/oiger Natronlauge mit rotstichig blauer Farbe und rotem Dichroismüs löst. In konzentrierter Schwefelsäure löst sich der Farbstoff mit blauer Farbe. Er färbt Wolle aus organisch saurem-schwefelsaurem Bade in sehr echten blauen bis marineblauen Tönen.
Beispiel: 27,7 Teile des Azofarbsl-offes aus diazo- tierter 1-Amino-2-oxynaphthalin-4-sulfonsäure und 2-Oxynaphtbalin, sowie 13,2 Teile des Azofarbstoffes aus diazotierter 2-Amino-l-oxy- naphtbalin-4.8-disulfonsäure und 2-Oxynaph- thalin werden in eine Natriumchromitlösung eingerührt, die aus 75 Teilen 8 o/oiger Chrom oxydhydratpaste,
entsprechend 6 Teilen Cr20a, 120 Teilen 30 o/oiger Natronlauge und 10 Tei len Glycerin frisch bereitet wurde. Man er hitzt unter Rühren 6 Stunden auf 80-90 und hierauf 1 Stunde auf 90-100 0. Das blau gefärbte Reaktionsprodukt wird mit 500 Teilen kaltem Wasser verdünnt, dann mit Essigsäure neutralisiert und hierauf im Vakuum zur Trockne verdampft.
Ferner gelangt man zu demselben Farb stoffe, wenn man, statt die Azofarbstoffe mit solchen Komplexverbindungen zu behandeln, die durch Einwirkung von hydroxylgruppen- haltigen organischen Verbindungen auf ätz- alkalische Chromhydroxydsuspensionen ent stehen, Chromsalze, sowie überschüssige Ätz- alkalien, zusammen mit den hydroxylgruppen- haltigen organischen Verbindungen und den Azofarbstoffen erwärmt.
Additional patent to main patent no. 169697. Process for the production of a chromium-containing azo dye. It has been found that a chromium-containing azo dye from the C'xemisch of the azo dye from diazotized 1-amino-2-oxynaphthalene-4-sulfonic acid and 2-oxynaphthalene with the azo dye from diazotized 2-amino-1-oxynaphthalene-4.8 -disulfonic acid and <RTI
ID = "0001.0015"> 2-oxynaphthalene can be produced if this mixture, a chromating agent and an organic compound containing hydroxyl groups are allowed to act on one another in an alkaline medium.
The chromium-containing dye obtained is a black-violet powder which dissolves in water, 10% strength sodium carbonate solution and 10% strength sodium hydroxide solution with a reddish blue color and red dichroism. The dye dissolves in concentrated sulfuric acid with a blue color. He dyes wool from organic acid-sulfuric acid bath in very real blue to navy blue shades.
Example: 27.7 parts of the azo dye from diazotized 1-amino-2-oxynaphthalene-4-sulfonic acid and 2-oxynaphthalene, and 13.2 parts of the azo dye from diazotized 2-amino-1-oxynaphthalene-4.8 -disulfonic acid and 2-oxynaphthalene are stirred into a sodium chromite solution, which consists of 75 parts of 8% chromium oxide hydrate paste,
corresponding to 6 parts of Cr20a, 120 parts of 30% sodium hydroxide solution and 10 parts of glycerin was freshly prepared. It is heated with stirring to 80-90 for 6 hours and then to 90-100 0 for 1 hour. The blue-colored reaction product is diluted with 500 parts of cold water, then neutralized with acetic acid and then evaporated to dryness in vacuo.
In addition, the same dyes are obtained if, instead of treating the azo dyes with complex compounds that are formed by the action of organic compounds containing hydroxyl groups on caustic alkaline chromium hydroxide suspensions, chromium salts and excess caustic alkalis together with the hydroxyl group containing organic compounds and the azo dyes.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH172596T | 1933-04-04 | ||
CH169697T | 1933-04-04 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH172596A true CH172596A (en) | 1934-10-15 |
Family
ID=25718778
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH172596D CH172596A (en) | 1933-04-04 | 1933-04-04 | Process for the preparation of a chromium-containing azo dye. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH172596A (en) |
-
1933
- 1933-04-04 CH CH172596D patent/CH172596A/en unknown
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CH242499A (en) | Process for the preparation of a copper-compatible polyazo dye. | |
CH172596A (en) | Process for the preparation of a chromium-containing azo dye. | |
CH172590A (en) | Process for the preparation of a chromium-containing azo dye. | |
CH172593A (en) | Process for the preparation of a chromium-containing azo dye. | |
CH172591A (en) | Process for the preparation of a chromium-containing azo dye. | |
DE519910C (en) | Process for the production of chromium-containing azo dyes | |
CH172595A (en) | Process for the preparation of a chromium-containing azo dye. | |
AT138381B (en) | Process for the production of chromium-containing dyes. | |
CH169697A (en) | Process for the preparation of a chromium-containing azo dye. | |
CH172592A (en) | Process for the preparation of a chromium-containing azo dye. | |
CH172589A (en) | Process for the preparation of a chromium-containing azo dye. | |
CH172588A (en) | Process for the preparation of a chromium-containing azo dye. | |
CH170331A (en) | Process for the preparation of a chromium-containing azo dye. | |
CH172597A (en) | Process for the preparation of a chromium-containing azo dye. | |
CH170323A (en) | Process for the preparation of a chromium-containing azo dye. | |
CH170332A (en) | Process for the preparation of a chromium-containing azo dye. | |
CH172604A (en) | Process for the preparation of a chromium-containing azo dye. | |
CH169693A (en) | Process for the preparation of a chromium-containing azo dye. | |
CH172583A (en) | Process for the preparation of a chromium-containing azo dye. | |
CH170324A (en) | Process for the preparation of a chromium-containing azo dye. | |
CH172594A (en) | Process for the preparation of a chromium-containing azo dye. | |
CH171595A (en) | Process for the preparation of a chromium-containing azo dye. | |
CH130903A (en) | Process for the production of a new dye. | |
CH172605A (en) | Process for the preparation of a chromium-containing azo dye. | |
CH170325A (en) | Process for the preparation of a chromium-containing azo dye. |