CH172595A - 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
- CH172595A CH172595A CH172595DA CH172595A CH 172595 A CH172595 A CH 172595A CH 172595D A CH172595D A CH 172595DA CH 172595 A CH172595 A CH 172595A
- Authority
- CH
- Switzerland
- Prior art keywords
- chromium
- oxynaphthalene
- dye
- 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
<B>Zusatzpatent</B> zum Hauptpatent 13r. 169697. Verfahren zur Herstellung eines ehromhaltigen Azofarbstofes. Es wurde gefunden, da(i man einen chrom- haltigen Azofarbstoff, aus dem (-jemisch des Azofarbstoffes aus diazotierter 1-Amino-2- oxynaphthalin-4-sulfonsäui,
e und 2-Oxynaph- thalin mit dem Azofarbstoff aus nitrierter 1-Diazo-2-oxyndphthalin-4-sulfonsäui-e und 2- Oxynaphthalin herstellen kann, wenn man dieses Gemisch, ein Chromierungsmittel und eine hydroxylgruppenhaltige organische Ver bindung in ätzalkalischem Medium aufeinan der einwirken lässt.
Der erhaltene chromhaltige Farbstoff stellt ein violettschwarzes Pulver dar, das sich in Wasser finit schwärzlich blauer rotdichroiti- scher Farbe löst. In 10 0%iger Sodalösung und in 10 %iger Natronlauge löst sich der Farbstoff nur spurenweise.
Er färbt Wolle aus organischsaurem-schwefelsaurem Bade in dunkeln Marineblautönen von vorzüglicher Echtheit.
<I>Beispiel:</I> 67 Teile einer 8 %igen Chromoxydhydrat- paste, entsprechend 5,36 Teilen CrQ03, 120 Teile einer 30 %igen Natronlauge und 15 Teile Zucker werden unter Rühren bis zur voll ständigen Lösung erwärmt.
Hierauf trägt man 33,3 Teile des Azofarbstoffes aus diazotierter 1-Amino-2-oxynaphthalin-4-sulfonsäure und 2- Oxynaphthalin als 20%ige Paste, sowie 9,
2 Teile des Azofarbatoffes aus nitrierter 1-Diazo- 2-oxynaphthalin-4-sulfonsäure und 2-Oxynaph- thalin ein und erwärmt das Gemisch 8 Stun den auf 80-900. Man verdünnt mit kaltem Wasser auf 600 Teile, neutralisiert mit stark verdünnter Schwefelsäure und fällt den neuen chromhaltigen Farbstoff durch Zufügen von Kochsalz aus.
Ferner gelangt man zu dem selben 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 Azofarbätoffen erwärmt.
<B> Additional patent </B> to main patent 13r. 169697. Process for the preparation of an azo dye containing Ehrom. It has been found that (i one a chromium-containing azo dye, from the (-jemisch the azo dye from diazotized 1-amino-2-oxynaphthalene-4-sulfonic acid,
e and 2-oxynaphthalene with the azo dye from nitrated 1-diazo-2-oxyndphthalin-4-sulfonsäui-e and 2-oxynaphthalene can be produced if this mixture, a chromating agent and a hydroxyl-containing organic compound in a caustic alkaline medium on one another can act.
The chromium-containing dye obtained is a violet-black powder which dissolves finitely, blackish-blue, red-dichroic color in water. The dye only dissolves in traces in 10 0% soda solution and in 10% sodium hydroxide solution.
He dyes wool from organic acid-sulfuric acid bath in dark navy blue tones of excellent fastness.
<I> Example: </I> 67 parts of an 8% chromium oxide hydrate paste, corresponding to 5.36 parts of CrQ03, 120 parts of 30% sodium hydroxide solution and 15 parts of sugar are heated while stirring until they are completely dissolved.
This carries 33.3 parts of the azo dye from diazotized 1-amino-2-oxynaphthalene-4-sulfonic acid and 2-oxynaphthalene as a 20% paste, and 9,
2 parts of the azo carbate from nitrated 1-diazo-2-oxynaphthalene-4-sulfonic acid and 2-oxynaphthalene and heats the mixture to 80-900 for 8 hours. It is diluted to 600 parts with cold water, neutralized with very dilute sulfuric acid and the new chromium-containing dye is precipitated by adding sodium chloride.
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 groups containing organic compounds and the azo dyes.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH169697T | 1933-04-04 | ||
CH172595T | 1933-04-04 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH172595A true CH172595A (en) | 1934-10-15 |
Family
ID=25718777
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH172595D CH172595A (en) | 1933-04-04 | 1933-04-04 | Process for the preparation of a chromium-containing azo dye. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH172595A (en) |
-
1933
- 1933-04-04 CH CH172595D patent/CH172595A/en unknown
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