CH274850A - Process for the production of a new pigment of the dioxazine series. - Google Patents
Process for the production of a new pigment of the dioxazine series.Info
- Publication number
- CH274850A CH274850A CH274850DA CH274850A CH 274850 A CH274850 A CH 274850A CH 274850D A CH274850D A CH 274850DA CH 274850 A CH274850 A CH 274850A
- Authority
- CH
- Switzerland
- Prior art keywords
- production
- dichloro
- new pigment
- dioxazine series
- parts
- 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
- C09B19/00—Oxazine dyes
- C09B19/02—Bisoxazines prepared from aminoquinones
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Nitrogen And Oxygen Or Sulfur-Condensed Heterocyclic Ring Systems (AREA)
Description
Verfahren zur Herstellung eines neuen Pigmentes der Dioxazinreihe. Die vorliegende Erfindung bezieht sich auf ein Verfahren zur Herstellung eines neuen Pigmentes der -Dioxazinreihe, nämlich von 2,9-Diphenyl-6,13=dichlor-triphendioxazin durch Erhitzen von 2,5-Bis-(4'-diphenyl- amino)-3,6-dichlor-1,4-benzochinon in einem organischen flüssigen Medium.
Das neue Produkt stellt ein bronzeviolet tes, kristallines Pulver dar, welches in Was ser unlöslich und in konz. Schwefelsäure unter Bildung einer blauen Lösung löslich ist.
Das Erhitzen erfolgt vorteilhafterweise in (xegenwart eines Oxydationsmittels und einer Substanz, welche .den Ringschluss fördert, z. B. eines Ferrihalogenids, Phosphorhalo genids oder organischen Säurehalogenids. Ferner kann ein organisches Säurehalogenid, welches selbst ein Oxydationsmittel ist, wie z.
B. m-Nitrobenzolsulfonylchlorid, verwendet werden. _ <I>Beispiel:</I> 40 Teile 2,5-Bis-(4'-diphenylamino)-3,6-di- c.hlor-1,4-benzochinon (in der unten beschrie benen Weise hergestellt) werden mit 10 Tei len m-Nitrobenzolsulfonylchlorid in 600 Tei len Chlornaphthalin während 21/2 Stunden bei 2500 C erhitzt. Dann wird das Reaktions gemisch auf 1000 C gekühlt, filtriert, zuerst mit Chlornaphthalin und hierauf mit Benzol gewaschen und schliesslich getrocknet. Das Produkt besteht aus 2,9-Diphenyl-6,13-di- chlor-triphendioxazin.
Das Ausgangsmaterial kann wie folgt her gestellt werden: 33,8 Teile 4-Aminodiphenyl, 24,6 Teile Chloranil, 27 Teile wasserfreies Natriumace- tat (oder eine äquivalente Menge Natrium- earbonat) und 300 Teile Äthylalkohol werden zum Sieden erhitzt und zusammen während 2 Stunden gerührt.
Das 2,5-Bis-(4'-diphenyl- amino) -3,6-dichlor-1,4-benzochinon, welches auf diese Weise anfällt, wird abfiltriert, zu erst mit Äthanol und hierauf mit Wasser ge waschen und schliesslich getrocknet.
Process for the production of a new pigment of the dioxazine series. The present invention relates to a process for the production of a new pigment of the dioxazine series, namely 2,9-diphenyl-6,13 = dichloro-triphendioxazine by heating 2,5-bis- (4'-diphenyl-amino) - 3,6-dichloro-1,4-benzoquinone in an organic liquid medium.
The new product is a bronze violet, crystalline powder which is insoluble in water and in conc. Sulfuric acid is soluble to form a blue solution.
The heating is advantageously carried out in the presence of an oxidizing agent and a substance which promotes ring closure, e.g. a ferric halide, phosphorus halide or organic acid halide. Furthermore, an organic acid halide, which is itself an oxidizing agent, e.g.
B. m-nitrobenzenesulfonyl chloride can be used. _ <I> Example: </I> 40 parts of 2,5-bis- (4'-diphenylamino) -3,6-di-chloro-1,4-benzoquinone (prepared in the manner described below) heated with 10 parts of m-nitrobenzenesulfonyl chloride in 600 parts of chloronaphthalene for 21/2 hours at 2500 C. The reaction mixture is then cooled to 1000 ° C., filtered, washed first with chloronaphthalene and then with benzene and finally dried. The product consists of 2,9-diphenyl-6,13-dichloro-triphendioxazine.
The starting material can be prepared as follows: 33.8 parts of 4-aminodiphenyl, 24.6 parts of chloranil, 27 parts of anhydrous sodium acetate (or an equivalent amount of sodium carbonate) and 300 parts of ethyl alcohol are heated to the boil and mixed together during the 2nd Stirred for hours.
The 2,5-bis- (4'-diphenyl-amino) -3,6-dichloro-1,4-benzoquinone, which is obtained in this way, is filtered off, washed first with ethanol and then with water and finally dried .
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH274850T | 1949-05-05 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH274850A true CH274850A (en) | 1951-04-30 |
Family
ID=4479939
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH274850D CH274850A (en) | 1949-05-05 | 1949-05-05 | Process for the production of a new pigment of the dioxazine series. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH274850A (en) |
-
1949
- 1949-05-05 CH CH274850D patent/CH274850A/en unknown
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