DE583224C - Process for the production of cobalt-containing azo dyes - Google Patents
Process for the production of cobalt-containing azo dyesInfo
- Publication number
- DE583224C DE583224C DE1930583224D DE583224DD DE583224C DE 583224 C DE583224 C DE 583224C DE 1930583224 D DE1930583224 D DE 1930583224D DE 583224D D DE583224D D DE 583224DD DE 583224 C DE583224 C DE 583224C
- Authority
- DE
- Germany
- Prior art keywords
- cobalt
- red
- parts
- dissolves
- brownish
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
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
- C09B45/20—Monoazo compounds containing cobalt
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D17/00—Pigment pastes, e.g. for mixing in paints
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Heat Sensitive Colour Forming Recording (AREA)
Description
Es wurde gefunden, daß man wertvolle kobalthaltige Farbstoffe erhält, wenn man o-Oxyazofarbstoffe von der allgemeinen FormelIt has been found that valuable cobalt-containing dyes are obtained if o-Oxyazo dyes of the general formula
OHOH
R1-Nr-NfR 1 -Nr-Nf
OH I J-OH,OH I J-OH,
worin R1 einen Arylrest bedeutet, der durch keine die SO2-Gruppierung enthaltende Gruppe sowie durch keine Carboxylgruppe substituiert ist, mit Suspensionen von Kobaltverbindungen in neutralem Medium behandelt.where R 1 denotes an aryl radical which is not substituted by any group containing the SO 2 group or by any carboxyl group, treated with suspensions of cobalt compounds in a neutral medium.
Als kobaltabgebende Mittel können Oxyde, Hydroxyde, Hydrate, Carbonate des Kobalts mit Zusätzen oder ohne Zusätze von neutral reagierenden Salzen, wie z. B. Natriumsulfit oder Kochsalz, verwendet werden.As cobalt-releasing agents, oxides, hydroxides, hydrates, carbonates of cobalt can be used with or without additives of neutral reacting salts, such as. B. sodium sulfite or table salt can be used.
Die nach vorliegendem Verfahren erhältlichen kobalthaltigen Farbstoffe können· besonders zur Herstellung von lichtechten, gefärbten Lacken, die sich von Celluloseestern und -äthern, künstlichen und natürlichen Harzen ableiten, verwendet werden.The cobalt-containing dyes obtainable by the present process can especially for the production of lightfast, colored lacquers, which differ from cellulose esters and ethers, artificial and natural resins can be used.
B eis piel 1Example 1
2,63 Teile des Farbstoffes aus diazotierten! 4-Chlor-2-amino-i-oxybenzol und Resorein werden in 250 Teilen Wasser aufgekocht und mit einer 0,65 Teilen Kobalt entsprechenden Menge einer frisch gefällten und neutral gewaschenen Kobaltsulfidsuspensiori einige Zeit am Rückflußkühler zum Sieden erhitzt. Nach dem Erkalten wird die entstandene Kobaltverhindung durch Zusatz von etwas Kochsalz abgeschieden, ausgewaschen und bei mäßiger Temperatur getrocknet. Sie stellt ein dunkelbraunes Pulver dar, das sich in Wasser mit roter, in Natronlauge mit tiefroter und in konzentrierter Schwefelsäure mit braungelber Farbe löst. Mit der blaustichigrot gefärbten Lösung der Kobaltverbindung in Zaponlack erhält man auf Metallfolien rote Überzüge.2.63 parts of the dye from diazotized! 4-chloro-2-amino-i-oxybenzene and resorein are boiled in 250 parts of water and a 0.65 part of cobalt corresponding Amount of a freshly precipitated and neutral washed cobalt sulfide suspension several Time heated to boiling on the reflux condenser. After cooling down, the resulting Cobalt prevention separated by adding a little table salt, washed out and with dried at a moderate temperature. It is a dark brown powder that settles in Water with red, in caustic soda with deep red and in concentrated sulfuric acid with brownish-yellow color dissolves. With the bluish-tinged red solution of the cobalt compound in zapon lacquer, red coatings are obtained on metal foils.
5,48 Teile, des Farbstoffes aus diazoliertem 4-Nitro-2-arnino-i-oxybenzol und Resorcin werden in 400 Teilen Wasser aufgekocht und mit 5,4 Teilen Kobaltioxyd (Co2O3) während 24Stunden zum Sieden erhitzt. Nach dem Erkalten wird der ausgeschiedene Farbstoff abfiltriert, gewaschen und getrocknet. Durch Umlösen aus Soda wird die entstandene Kobaltverbindung von überschüssigem Metalloxyd getrennt und bei mäßiger Temperatur getrocknet. Sie stellt ein violettbraunes PuI-5.48 parts of the dye from diazolated 4-nitro-2-arnino-i-oxybenzene and resorcinol are boiled in 400 parts of water and heated to boiling with 5.4 parts of cobalt dioxide (Co 2 O 3 ) for 24 hours. After cooling, the precipitated dye is filtered off, washed and dried. The cobalt compound formed is separated from excess metal oxide by dissolving in soda and dried at a moderate temperature. It represents a purple-brown puI
Claims (1)
OH t - JN = JN - ' N f I
OH
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH583224X | 1929-05-28 |
Publications (1)
Publication Number | Publication Date |
---|---|
DE583224C true DE583224C (en) | 1933-08-31 |
Family
ID=4521639
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE1930583224D Expired DE583224C (en) | 1929-05-28 | 1930-05-29 | Process for the production of cobalt-containing azo dyes |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE583224C (en) |
-
1930
- 1930-05-29 DE DE1930583224D patent/DE583224C/en not_active Expired
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