CH113920A - Process for the preparation of a vat dye. - Google Patents
Process for the preparation of a vat dye.Info
- Publication number
- CH113920A CH113920A CH113920DA CH113920A CH 113920 A CH113920 A CH 113920A CH 113920D A CH113920D A CH 113920DA CH 113920 A CH113920 A CH 113920A
- Authority
- CH
- Switzerland
- Prior art keywords
- preparation
- dye
- violet
- blue
- color
- 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
- C09B3/00—Dyes with an anthracene nucleus condensed with one or more carbocyclic rings
- C09B3/22—Dibenzanthrones; Isodibenzanthrones
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
Verfahren zur Darstellung eines ILüpenfarbstoffes. Es ist gefunden worden, dass negativ sub stituierte Keto-Perylene imstande sind, die negativen Substituenten gegen Verbindungen mit austansehbaren -Wasserstoffatomen, wie Aminen, Phenolen, Merkaptanen, Alkoholen oder Schwefelalkalien auszutauschen, wobei Farbstoffe entstehen, die von hoher techni scher Bedeutung sind.
Gegenstand dieses Patentes ist nun die Darstellung eines. Küpenfarbstoffes: aus chlo riertem D.ibenzanthron und, Phenol.
Das Verfahren wird: zum Beispiel folgen dermassen ausgeführt: 10 Teile Monochlordibenzanthron, das durch Chorieren von Dibenzanthron in Chlorsulfon- säure bis zur Monochlorstufe erhältlich ist, werden mit 30 Teilen Phenol undi 8 Teilen Ä\tzkali etwa 20 Stunden unter Rühren zum Sieden erhitzt.
Die Aufarbeitung der Schmelze kann so erfolgen, dass man nach dem; Abkühlen mit etwa 80 Teilen. Alkohol verdünnt, absaugt, mit Alkohol und dann mit Wasser wäscht und, trocknet.
Der in trockenem, pulverförmigem Zu stande violettschwarze Farbstoff ist in Säu ren und , Alkalien unlöslich. Konzentrierte Schwefelsäure löst mit violetter Farbe. Die Lösungsfarbe in organischen Lösungsmitteln ist violett bis blau mit rotbrauner Fluores zenz. Die Hydrosulfitküpe ist violett bis blau gefärbt und fluoresziert rotbraun. Auf Baumwolle erhält man ein echtes Blau.
Process for the preparation of a lupine dye. It has been found that negatively substituted keto-perylenes are able to exchange the negative substituents for compounds with exchangeable hydrogen atoms, such as amines, phenols, mercaptans, alcohols or alkaline sulfur, resulting in dyes that are of high technical importance.
The subject of this patent is now the representation of a. Vat dye: from chlorinated D.ibenzanthron and phenol.
The process is as follows: for example, 10 parts of monochlorodibenzanthrone, which can be obtained by chorating dibenzanthrone in chlorosulfonic acid to the monochloro stage, are heated to boiling with 30 parts of phenol and 8 parts of potassium hydroxide for about 20 hours while stirring.
The melt can be worked up in such a way that after; Cool with about 80 parts. Alcohol dilutes, sucks off, washes with alcohol and then with water and dries.
The dye, which is violet-black when dry, in powder form, is insoluble in acids and alkalis. Concentrated sulfuric acid dissolves with purple color. The solution color in organic solvents is violet to blue with red-brown fluorescence. The hydrosulfite vat is purple to blue in color and fluoresces red-brown. On cotton you get a real blue.
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH113920T | 1925-01-26 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH113920A true CH113920A (en) | 1926-02-16 |
Family
ID=4373072
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH113920D CH113920A (en) | 1925-01-26 | 1925-01-26 | Process for the preparation of a vat dye. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH113920A (en) |
-
1925
- 1925-01-26 CH CH113920D patent/CH113920A/en unknown
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