CH133806A - Process for the preparation of a new condensation product which can be used as a dye and as an intermediate product for the preparation of dyes. - Google Patents
Process for the preparation of a new condensation product which can be used as a dye and as an intermediate product for the preparation of dyes.Info
- Publication number
- CH133806A CH133806A CH133806DA CH133806A CH 133806 A CH133806 A CH 133806A CH 133806D A CH133806D A CH 133806DA CH 133806 A CH133806 A CH 133806A
- Authority
- CH
- Switzerland
- Prior art keywords
- preparation
- dye
- dyes
- product
- condensation product
- Prior art date
Links
Landscapes
- Coloring (AREA)
- Heterocyclic Carbon Compounds Containing A Hetero Ring Having Oxygen Or Sulfur (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
Verfahren zur Darstellung eines neuen, als Farbstoff und als Zwisehenprodukt zur Herstellung von Farbstoffen verwendbaren Kondensationsproduktes. Es wurde gefunden, dass Anthrapyrimidon unter der Einwirkung von alkalischen Kon- densationsmitteln in eine neue Verbindung übergeht, welche sich von dem Ausgangs material durch ihr Verhalten bei der Ein wirkung von reduzierenden Mitteln, sowie durch ihre Eigenkraft, die Faser aus der Küpe anzufärben, unterscheidet. Das Pro dukt soll als Farbstoff und als Zwischen produkt bei der Herstellung von andern Farbstoffen Verwendung finden.
Beigpiet: 10 Teile Anthrapyrimidon von der Formel
EMI0001.0011
werden in eine durch Erhitzen von 100 Tei len Kalihydrat und 100 Teilen Alkohol er haltene Schmelze eingetragen. Die Tempe ratur wird langsam - auf<B>180'</B> gesteigert und dabei so lange gehalten, bis die Farbstoff bildung beendet ist. Die rotbraune Schmelze wird auf Wasser gegossen, die Leukoverbin- dung mit Luft oxydiert und der Farbstoff in der üblichen weise aufgearbeitet. Das gelbbraune Kondensationsprodukt färbt aus orangefarbener Küpe Baumwolle in der glei chen Farbe an.
Die Färbung liefert beim Verhängen an der Luft ein grünstichiges Gelb, das beim Betupfen mit Alkali nach Rot umschlägt und beim Behandeln mit oxydierenden Mitteln, wie Hypochlorit, in seiner Echtheit verbessert wird, indem hier bei vorhandene Verunreinigungen des Farb stoffes zerstört werden. Der Farbstoff kann somit durch Behandlung mit oxydierenden Mitteln, zum Beispiel durch Hypochlorit, gereinigt werden. .
Process for the preparation of a new condensation product which can be used as a dye and as an intermediate product for the preparation of dyes. It has been found that anthrapyrimidone changes into a new compound under the action of alkaline condensation agents, which differs from the starting material in its behavior when exposed to reducing agents and in its own strength to color the fibers from the vat . The product is intended to be used as a dye and as an intermediate in the manufacture of other dyes.
Beigpiet: 10 parts of anthrapyrimidone of the formula
EMI0001.0011
are entered into a melt obtained by heating 100 parts of potassium hydrate and 100 parts of alcohol. The temperature is slowly increased to <B> 180 '</B> and held until the dye formation has ended. The red-brown melt is poured onto water, the leuco compound is oxidized with air and the dye is worked up in the usual way. The yellow-brown condensation product stains cotton in the same color from an orange vat.
The coloring provides a greenish yellow when hanging in the air, which turns red when dabbed with alkali and when treated with oxidizing agents such as hypochlorite, its authenticity is improved by destroying any impurities in the dye. The dye can thus be purified by treatment with oxidizing agents, for example hypochlorite. .
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE133806X | 1926-10-25 | ||
CH133806T | 1927-10-20 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH133806A true CH133806A (en) | 1929-06-30 |
Family
ID=25712176
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH133806D CH133806A (en) | 1926-10-25 | 1927-10-20 | Process for the preparation of a new condensation product which can be used as a dye and as an intermediate product for the preparation of dyes. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH133806A (en) |
-
1927
- 1927-10-20 CH CH133806D patent/CH133806A/en unknown
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