CH172593A - 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
- CH172593A CH172593A CH172593DA CH172593A CH 172593 A CH172593 A CH 172593A CH 172593D A CH172593D A CH 172593DA CH 172593 A CH172593 A CH 172593A
- Authority
- CH
- Switzerland
- Prior art keywords
- chromium
- dye
- oxynaphthalene
- azo dye
- mixture
- 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)
- Coloring (AREA)
Description
Zusatzpatent zum Hauptpatent. Nr. 169697. Verfahren zur Herstellung eines chromhaltigen AZOfar10$toffeS. Es wurde gefunden, dass man einen chrom- haltigen Azofarbstoff aus dem Gemisch des Azofarbstoffes aus diazotierter 1-Amino-2- oxynaphthalin-4-sulforisäure und 2-Oxynaph- thalin mit dem Azofarbstoff aus diazotierter 1- Methyl - 3 - <RTI
ID="0001.0016"> ainino-4-oxybenzol-6-sulfoiisäure und 2-Oxynaphthalin herstellen kann, wenn man dieses Gemisch, ein Chromierungsmittel und eine hydroxylgruppenhaltige organische Verbindung in ätzalkalischem Medium auf einander einwirken lässt.
Der erhaltene chromhaltige Farbstoff stellt ein violettschwarzes Pulver dar, das sich in Wasser, in 10 %iger Sodalösung sowie 10 %iger Natronlauge mit violetter Farbe löst, in konzentrierter Schwefelsäure löst sich der Farbstoff mit blauer rotdichroitischer Farbe.
Er färbt Wolle aus organischsaurem- achwefelsaurem Bade in sehr echten marine blauen Tönen.
Beispiel- 20,8 Teile des Azofarbstoffes aus diazo- tierter 1-Amino-2-oxynaplithalin-4- ;
;fonsäure und 2-Oxynaphthalin als 20 %ige Paste, sowie 19,1 Teile des Azofarbstoffes aus diazotierter 1-Methyl-3-amino - 4 - oxybenzol-6-sulfonsäure und 2-Oxynaphthalin werden in eine Kalium- chromitlösuug eingetragen,
die aus 65 Teilen einer 8 %igen - Chromoxydhydratpaste, ent- sprechend 8,1 Teilen OrQ0i, 48 Teilen 90%igem Ätzkali und 12 Teilen Gallussäur e bereitet wurde. Man erwärmt nun das Reaktionsge misch unter Rühren 6 Stunden auf 80-90 0 dann 2 Stunden auf 100 0. Hierauf wird mit kaltem Wasser auf 600 Teile verdünnt, mit stark verdünnter Mineralsäure neutralisiert und der neue chromhaltige Farbstoff durch Beigabe von Kochsalz abgeschieden.
Ferner gelangt man zu demselben Farb stoff, wenn man, statt die Azofarbstoffe mit solchen Komplexverbindungen zu behandeln, die durch Einwirkung von hydroxylgruppen- haltigen organischen Verbindungen auf ätz- alkalische Ohromhydroxydsuspensionen ent stehen, Chromsalze sowie überschüssige Ätz- alkalien zusammen mit den hydroxylgruppen- haltigen organischen Verbindungen und den Azofarbstoffen erwärmt.
Additional patent to the main patent. No. 169697. Process for the production of a chromium-containing AZO far10 $ substance. It has been found that a chromium-containing azo dye from the mixture of the azo dye from diazotized 1-amino-2-oxynaphthalene-4-sulforic acid and 2-oxynaphthalene with the azo dye from diazotized 1-methyl-3 - <RTI
ID = "0001.0016"> ainino-4-oxybenzene-6-sulfoiic acid and 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 violet-black powder which dissolves in water, 10% sodium carbonate solution and 10% sodium hydroxide solution with a violet color; the dye dissolves in concentrated sulfuric acid with a blue red dichroic color.
He dyes wool from organic acid-sulphuric acid bath in very real marine blue tones.
Example 20.8 parts of the azo dye from diazo-tated 1-amino-2-oxynaplithalin-4-;
Fonic acid and 2-oxynaphthalene as a 20% paste, as well as 19.1 parts of the azo dye from diazotized 1-methyl-3-amino-4-oxybenzene-6-sulfonic acid and 2-oxynaphthalene are added to a potassium chromite solution,
which was prepared from 65 parts of an 8% chromium oxide hydrate paste, corresponding to 8.1 parts OrQ0i, 48 parts 90% caustic potash and 12 parts gallic acid. The reaction mixture is now heated with stirring to 80-90 ° for 6 hours, then to 100 ° for 2 hours. It is then diluted to 600 parts with cold water, neutralized with highly dilute mineral acid and the new chromium-containing dye is deposited by adding sodium chloride.
In addition, the same dyestuff is obtained if, instead of treating the azo dyes with complex compounds that are formed by the action of hydroxyl-containing organic compounds on caustic alkaline oxyhydroxide suspensions, chromium salts and excess caustic alkalis together with the hydroxyl-containing organic compounds Heated compounds and the azo dyes.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH169697T | 1933-04-04 | ||
CH172593T | 1933-04-04 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH172593A true CH172593A (en) | 1934-10-15 |
Family
ID=25718775
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH172593D CH172593A (en) | 1933-04-04 | 1933-04-04 | Process for the preparation of a chromium-containing azo dye. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH172593A (en) |
-
1933
- 1933-04-04 CH CH172593D patent/CH172593A/en unknown
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