CH191760A - Process for the preparation of an acidic chromating dye of the anthraquinone series. - Google Patents
Process for the preparation of an acidic chromating dye of the anthraquinone series.Info
- Publication number
- CH191760A CH191760A CH191760DA CH191760A CH 191760 A CH191760 A CH 191760A CH 191760D A CH191760D A CH 191760DA CH 191760 A CH191760 A CH 191760A
- Authority
- CH
- Switzerland
- Prior art keywords
- dye
- preparation
- anthraquinone series
- chromating
- acidic
- Prior art date
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- Coloring (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
Verfahren zur Darstellung eines sauren Chromierungsfarbstoffes der Anthrachinonreihe. Gegenstand dieses Zusatzpatentes ist ein Verfahren zur Darstellung eines sauren Chromierungsfarbstoffes der Anthrachinon- reihe, welches dadurch gekennzeichnet ist, dass man 1-Amino-4-bromanthrachinon-2- sulfos.äure mit 2,4-Diaminodiphenyläther-3'- oxy-4'-earbonsäurechlorhydrat kondensiert.
<I>Beispiel:</I> 33 Gewichtsteile .2,4-Diaminodiphenyl- äther=3'-oxy-4'-carbonsäurechlorhydrat, 34 Gewichtsteile '1-Amino-4-bromanthrachinon- 2-sulfosäure, 22 Gewichtsteile Soda calc., 36 Gewichtsteile Natriumbicarbonat, 2. Ge wichtsteile gupferchlorür werden in 400 Ge wichtsteilen Wasser go lange bei 6,0 bis 70 C gerührt, bis die Bildung des Farbstoffes be endet ist.
Das Kondensationsprodukt wird durch Einrühren des Reaktionsgemisches in 3 % ige Salzsäure isoliert und zur weiteren Reinigung in verdünntem Ammoniak gelöst und durch Ansäuern gefällt. Man erhält den Farbstoff nach dem Trocknen als dunkles Pulver, welches sich in Wasser mit blauer Farbe löst und auf Wolle blaue Färbungen liefert, deren Nuance beim Nachchromieren in ein Grau von ausgezeichneten Echtheiten übergeht.
Process for the preparation of an acidic chromating dye of the anthraquinone series. The subject of this additional patent is a process for the preparation of an acidic chromating dye of the anthraquinone series, which is characterized in that 1-amino-4-bromoanthraquinone-2-sulfonic acid is mixed with 2,4-diaminodiphenyl ether-3'-oxy-4 ' carbonic acid chlorohydrate condensed.
<I> Example: </I> 33 parts by weight of .2,4-diaminodiphenyl ether = 3'-oxy-4'-carboxylic acid chlorohydrate, 34 parts by weight of 1-amino-4-bromoanthraquinone-2-sulfonic acid, 22 parts by weight of soda calc. , 36 parts by weight of sodium bicarbonate, 2. Ge parts by weight of gupferchlorür are stirred in 400 parts by weight of water at 6.0 to 70 C until the formation of the dye has ended.
The condensation product is isolated by stirring the reaction mixture into 3% hydrochloric acid and, for further purification, dissolved in dilute ammonia and precipitated by acidification. After drying, the dyestuff is obtained as a dark powder which dissolves in water with a blue color and gives blue dyeings on wool, the shade of which changes to a gray with excellent fastness properties on post-chrome plating.
Claims (1)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE191760X | 1934-12-22 | ||
DE231035X | 1935-10-23 | ||
CH188888T | 1935-12-19 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH191760A true CH191760A (en) | 1937-06-30 |
Family
ID=27177776
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH191760D CH191760A (en) | 1934-12-22 | 1935-12-19 | Process for the preparation of an acidic chromating dye of the anthraquinone series. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH191760A (en) |
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1935
- 1935-12-19 CH CH191760D patent/CH191760A/en unknown
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