CH272252A - Process for the production of a vat dye. - Google Patents
Process for the production of a vat dye.Info
- Publication number
- CH272252A CH272252A CH272252DA CH272252A CH 272252 A CH272252 A CH 272252A CH 272252D A CH272252D A CH 272252DA CH 272252 A CH272252 A CH 272252A
- Authority
- CH
- Switzerland
- Prior art keywords
- production
- vat dye
- parts
- diehinazoline
- formula
- 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
- C09B5/00—Dyes with an anthracene nucleus condensed with one or more heterocyclic rings with or without carbocyclic rings
- C09B5/24—Dyes with an anthracene nucleus condensed with one or more heterocyclic rings with or without carbocyclic rings the heterocyclic rings being only condensed with an anthraquinone nucleus in 1-2 or 2-3 position
- C09B5/44—Azines of the anthracene series
- C09B5/46—Para-diazines
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
Verfahren zur Herstellung eines Küpenfarbstoffes.
EMI0001.0002
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bildet ein grünes Pulver, das Baumwolle -aus violettbraimer Küpe in echten, gelbgrünen Tönen färbt.
Die Diehinazoline der oberstehenden For-
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durch Umsetzung mit Phosphorpentahalogeni- den, vorzugsweise mit Phosphorpentachlorid hergestellt werden.
Die Umsetzung mit dem 4-Aminoanthra- chinon-2,1(N)-benzolaeridon erfolgt mit Vor teil in einem hoehsiedenden Lösungsmittel wie Nitrobenzol, Dichlorbenzol oder Phenol bei er-
EMI0002.0023
werden zusammen mit 4,8 Teilen Phos- phorpentachlori,d in 250 Teilen Nitrobenzol 3/4 Stunden zum Sieden erhitzt.
Nach dem Erkalten wird albgesaugt mit Nitrobenzol,
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2,5 Teile dieses Dichinazolins werden zusam men mit 2,3 Teilen 4-Aminoanthrachinon- 2,1(N)-benzolacridon in 50 Teilen Phenol 1/2 Stunde zum Sieden erhitzt. Hierauf gibt man 50 Teile wasserfreies Pyridin zu, lässt auf etwa 60 erkalten, saugt ab, wäscht mit Benzol aus und trocknet.
Dieses Rohprodukt kann folgendermassen gereinigt werden: mel können aus dem durch Kondensation von 2-Amino-3-cyananthrachinon mit Diphenyl- 4,4'-dicarbonsäuredichlorid erhältlichen Säure- arid der Formel höhter Temperatur, z. B. bei der Siedetempe ratur des betreffenden Lösungsmittels.
<I>Beispiel:</I> 4 Teile des durch Kondensation von 2- Amino-3-cyananthrachinori erhältlichen Säure- arides der Formel dann Benzol ausgewaschen und getrocknet.
Man erhält so in Form eines schwerlöslichen Kristallpulvers dass entsprechende Dichinazo- lin der Formel 75 Man löst es in etwa der dreissigfachen Menge etwa 90o/oiger Schwefelsäure und ver dünnt langsam mit etwa 70o/oiger Schwefel säure,
bis die Konzentration der Schwefel- säure auf etwa 72 % gesunken ist und der Farbstoff als kristallisiertes, braunes Sulfat ausgefällt wird. Man -saugt nach dem Erkalten ab, zersetzt das Sulfat mit Wasser, filtriert, wäscht mit Wasser aus und trocknet.
Process for the production of a vat dye.
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forms a green powder that dyes cotton from a violet-brown vat in real, yellow-green tones.
The diehinazoline of the above for-
EMI0002.0008
be prepared by reaction with phosphorus pentahalides, preferably with phosphorus pentachloride.
The reaction with the 4-aminoanthraquinone-2,1 (N) -benzolaeridone takes place with advantage in a high-boiling solvent such as nitrobenzene, dichlorobenzene or phenol with
EMI0002.0023
are heated to boiling for 3/4 hours together with 4.8 parts of phosphorus pentachlori, d in 250 parts of nitrobenzene.
After cooling, it is sucked with nitrobenzene,
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2.5 parts of this dichinazoline are heated together with 2.3 parts of 4-aminoanthraquinone-2,1 (N) -benzolacridone in 50 parts of phenol to the boil for 1/2 hour. 50 parts of anhydrous pyridine are then added, allowed to cool to about 60, filtered off with suction, washed out with benzene and dried.
This crude product can be purified as follows: mel can be obtained by condensation of 2-amino-3-cyananthraquinone with diphenyl-4,4'-dicarboxylic acid of the formula higher temperature, z. B. at the boiling temperature of the solvent in question.
<I> Example: </I> 4 parts of the acid aride of the formula obtainable by condensation of 2-amino-3-cyananthraquinori, then washed out with benzene and dried.
In this way, in the form of a sparingly soluble crystal powder, the corresponding dichinazo-lin of the formula 75 is obtained. It is dissolved in about thirty times the amount of about 90% sulfuric acid and slowly diluted with about 70% sulfuric acid,
until the concentration of sulfuric acid has dropped to about 72% and the dye is precipitated as crystallized, brown sulphate. After cooling, it is suctioned off, the sulfate is decomposed with water, filtered, washed with water and dried.
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH272252T | 1949-05-03 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH272252A true CH272252A (en) | 1950-12-15 |
Family
ID=4478634
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH272252D CH272252A (en) | 1949-05-03 | 1948-07-09 | Process for the production of a vat dye. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH272252A (en) |
-
1948
- 1948-07-09 CH CH272252D patent/CH272252A/en unknown
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