CH191748A - 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
- CH191748A CH191748A CH191748DA CH191748A CH 191748 A CH191748 A CH 191748A CH 191748D A CH191748D A CH 191748DA CH 191748 A CH191748 A CH 191748A
- Authority
- CH
- Switzerland
- Prior art keywords
- dye
- preparation
- chromating
- acidic
- water
- Prior art date
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- Chemical Treatment Of Metals (AREA)
Description
Verfahren zur Darstellung eines sauren Chromierungsfarbstoifes der Antliraehinonreihe. Gegenstand dieses Zusatzpatentes ist ein Verfahren zur Darstellung eines sauren Chro- mierungsfarbstoffes der Anthrachinonreihe, welches dadurch gekennzeichnet ist, dass man 1-amino-4-bromanthrachinon-2-sulfo- saures Natrium mit 4-Chlor#3-aminobenzyl- 4'-oxy-3'-car-boxyphenylsulfon kondensiert.
<I>Beispiel:</I> 20 Gewichtsteile 1-amino-4-bromanthra- chirion-2-sulfosaures Natrium, 23 Gewichts teile 4-Chlor-3-auiinobenzyl-4'-oxy-3'-carboxy- pheriylsulfon, 17 (xewichtsteile Soda ealciniert und 1 Gewichtsteil Kiipfercblorür werden in 250 Teilen Wasser so lange unter Rühren auf 80-90 0 C erwärmt, bis die Farbstoff bildung beendet ist.
Die erhaltene blaue Lö sung wird nach dem Filtrieren mit der 15- fachen Gewichtsmenge Wasser verdünnt und durch Zusatz von verdünnter Salzsäure der Farbstoff abgeschieden und filtriert.
Der Fil- terkuchen wird mit 3 % iger Salzsäure gut ausgewaschen und das so behandelte Produkt durch Lösen in verdünntem Ammoniak und Ansäuern mit verdünnter Salzsäure weiter gereinigt. Män erhält ein dunkles kristalli nisches Pulver, welches sich in Wasser mit blauer Farbe löst und aus saurer Flotte auf Wolle schöne blaue Farbtöne liefert. Durch Nachchromieren werden grünstichig blaue Töne von ausgezeichneten Echtheiten erhalten.
Process for the preparation of an acidic chromating dye of the anti-liraequinone 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-sulfo-acid sodium with 4-chloro # 3-aminobenzyl-4'-oxy -3'-car-boxyphenyl sulfone condensed.
<I> Example: </I> 20 parts by weight of 1-amino-4-bromoanthra-chirion-2-sulphonic acid sodium, 23 parts by weight of 4-chloro-3-auiinobenzyl-4'-oxy-3'-carboxypheriylsulphone, 17 (x parts by weight of soda and 1 part by weight of Kiipfercblorür are heated in 250 parts of water with stirring to 80-90 ° C. until the formation of the dye has ended.
After filtering, the blue solution obtained is diluted with 15 times the amount by weight of water and the dye is separated off by adding dilute hydrochloric acid and filtered.
The filter cake is washed thoroughly with 3% hydrochloric acid and the product treated in this way is further purified by dissolving it in dilute ammonia and acidifying it with dilute hydrochloric acid. Man receives a dark crystalline powder which dissolves in water with a blue color and, from acidic liquor, produces beautiful blue tones on wool. After chroming, greenish blue shades of excellent fastness properties are obtained.
Claims (1)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE191748X | 1934-12-22 | ||
DE231035X | 1935-10-23 | ||
CH188888T | 1935-12-19 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH191748A true CH191748A (en) | 1937-06-30 |
Family
ID=27177764
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH191748D CH191748A (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) | CH191748A (en) |
-
1935
- 1935-12-19 CH CH191748D patent/CH191748A/en unknown
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