CH139378A - Process for the preparation of a nitrogenous vat dye of the benzanthrone series. - Google Patents
Process for the preparation of a nitrogenous vat dye of the benzanthrone series.Info
- Publication number
- CH139378A CH139378A CH139378DA CH139378A CH 139378 A CH139378 A CH 139378A CH 139378D A CH139378D A CH 139378DA CH 139378 A CH139378 A CH 139378A
- Authority
- CH
- Switzerland
- Prior art keywords
- preparation
- vat dye
- nitrogenous
- dye
- benzanthrone
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Coloring (AREA)
Description
Zusatzpatent zum Hauptpatent Nr. 120525. Zierfahren zur Darstellung eines stickstoffhaltigen Küpenfarbstoffes der .BPnzanthronreihe. In dem Hauptpatent Nr. 120525 ist ein Verfahren zur Darstellung eines Küpenfarb- stofl'es beschrieben, bei dem a-Anthrachinonyl- amino-Bz1 # Bzl'-benzanthronylsulfid mit einem alkalischen Kondensationsmittel, insbesondere alkoholischem Alkaii, behandelt wird.
Gegenstand dieses Zusatzpatentes ist ein Verfahren zur Darstellung eines stickstoff haltigen Küpenfarbstoffes der Benzanthron- reihe, bei dem ein Kondensationsprodukt der nachstehenden Formel:
EMI0001.0015
worin R ein organischer Rest mit weniger als 17 Kohlenstoffatomen ist, mit alkalischen Mitteln, insbesondere alkoholischem Alkali, behandelt wird. Der an Schwefel gebundene organische Rest R der Formel tritt nicht mit in das Endprodukt ein.
Der neue Farbstoff färbt aus blauer Küpe die pflanzliche Faser in echten, blaustichig schwarzen Tönen und löst sich in konzentrierter Schwefelsäure mit trüb blaustichig grüner Farbe.
<I>Beispiele</I> 1. 10 Teile 6-(a-Anthrachinonyl)-amino- Bzl-thiokresy lbenzanthron (erhältlich zum Bei spiel durch Kondensation von 6-Halogen-Bzl- thiokresyl-benzanthron mit a-Aminoanthra- chinon) werden mit 40 Teilen Kaliumhydroxyd und 25-30 Teilen Alkohol solange bei 170 bis 180 verschmolzen, bis die Farbstoffbildung beendet ist. Die Schmelze wird in der üblichen Weise aufgearbeitet.
2. 10 Teile 6-(a-Anthrachinonyl)-amino- Bzl-thiokresylbenzanthron werden bei unge fähr 240-2501 in die acht- bis zehnfache Menge geschmolzenes Kaliumhydroxyd einge tragen. Man erhöht die Temperatur der Schmelze auf etwa<B>260-2700</B> und rührt so lange, bis die Farbsto$bildung beendet ist. Die erkaltete Schmelze wird in Wasser auf genommen, kochend filtriert und gewaschen.
Additional patent to main patent no. 120525. Zierfahren to display a nitrogen-containing vat dye of the .BPnzanthron series. The main patent no. 120525 describes a process for the preparation of a vat dye in which a-anthraquinonylamino-Bz1 # Bzl'-benzanthronyl sulfide is treated with an alkaline condensation agent, in particular an alcoholic alkali.
The subject of this additional patent is a process for the preparation of a nitrogen-containing vat dye of the benzanthrone series, in which a condensation product of the following formula:
EMI0001.0015
where R is an organic radical with fewer than 17 carbon atoms, is treated with alkaline agents, especially alcoholic alkali. The organic radical R of the formula bonded to sulfur does not enter the end product.
The new dye dyes the vegetable fibers from the blue vat in real, bluish black tones and dissolves in concentrated sulfuric acid with a cloudy bluish green color.
<I> Examples </I> 1. 10 parts 6- (a-anthraquinonyl) -amino- Bzl-thiocresy lbenzanthrone (obtainable for example by condensation of 6-halo-Bzl-thiocresyl-benzanthrone with a-aminoanthraquinone) are fused with 40 parts of potassium hydroxide and 25-30 parts of alcohol at 170 to 180 until the dye formation is complete. The melt is worked up in the usual way.
2. 10 parts of 6- (a-anthraquinonyl) -amino-Bzl-thiocresylbenzanthrone are carried into eight to ten times the amount of molten potassium hydroxide at approximately 240-2501. The temperature of the melt is increased to about 260-2700 and the mixture is stirred until the formation of color has ended. The cooled melt is taken up in water, filtered at the boil and washed.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH139378T | 1928-07-30 | ||
CH120525T | 1929-08-01 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH139378A true CH139378A (en) | 1930-04-15 |
Family
ID=25709474
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH139378D CH139378A (en) | 1928-07-30 | 1928-07-30 | Process for the preparation of a nitrogenous vat dye of the benzanthrone series. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH139378A (en) |
-
1928
- 1928-07-30 CH CH139378D patent/CH139378A/en unknown
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