CH191758A - 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
- CH191758A CH191758A CH191758DA CH191758A CH 191758 A CH191758 A CH 191758A CH 191758D A CH191758D A CH 191758DA CH 191758 A CH191758 A CH 191758A
- Authority
- CH
- Switzerland
- Prior art keywords
- dye
- preparation
- acidic
- anthraquinone series
- water
- Prior art date
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- Chemical Treatment Of Metals (AREA)
Description
Verfahren zur Darstellung eines sauren Chromierungsfarbstoffes der.Anthrachinonreihe. Gegenstand dieses Zusatzpatentes ist ein Verfahren zur Darstellung eines sauren Chro- mierungsfarbstoffes der Anthrachinonreihe, welches dadurch gekennzeichnet ist, dass man 1-jodanthrachinon=2,sulfosaures Kalium mit 4-Amino-4'-oxy-3'-earboxyazobenzol konden siert.
<I>Beispiel:</I> -16 Gewichtsteile 1 - jodanthrachinon - 2 - sulfosaures Kalium, 2.7 Gewichtsteile 4- Amino-4'-oxy-3'-carboxyazobenzol, 16 Ge wichtsteile Soda calciniert, 2:7 Gewichtsteile Natriumbicarbonat, 2 Gewichtsteile Kupfer- chlorür werden in 450 Teilen Wasser 40 Stunden bei 45 bis<B>50'</B> gerührt.
Das Re aktionsgemisch wird zur Aufarbeitung in zirka 2"500' Teile Wasser eingerührt, mit ver dünnter Salzsäure ,gefällt und, abgesaugt. Nachdem der Filterrückstand mit 3%iger Salzsäure gewaschen wurde, löst man das Produkt in zirka 2500 Teilen Wasser unter Zusatz von Ammoniak, filtriert die Lösung, fällt mit zirka 2,00 Volumteilen konzentrier ter Salzsäure und erwärmt vorsichtig auf zirka 70 bis 80 C.
Das .so erhaltene Kon densationsprodukt wird nach dem Absaugen mit der erforderlichen Menge Sodalösung schwach alkalisch gestellt und getrocknet. Man erhält so ein braun-es Pulver, welches sich in Wasser mit braungelber Farbe löst und welches Wolle aus saurer Flotte in brau nen Tönen färbt. Zur Erhöhung der Echt heit werden die Färbungen nachchromiert.
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-iodanthraquinone = 2, sulfonic acid potassium is condensed with 4-amino-4'-oxy-3'-earboxyazobenzene.
<I> Example: </I> -16 parts by weight 1 - iodanthraquinone - 2 - sulfonic acid potassium, 2.7 parts by weight 4- amino-4'-oxy-3'-carboxyazobenzene, 16 parts by weight calcined soda, 2: 7 parts by weight sodium bicarbonate, 2 Parts by weight of copper chloride are stirred in 450 parts of water for 40 hours at 45 to 50 minutes.
For work-up, the reaction mixture is stirred into about 2.500 parts of water, precipitated with dilute hydrochloric acid and filtered off with suction. After the filter residue has been washed with 3% hydrochloric acid, the product is dissolved in about 2500 parts of water with the addition of ammonia , the solution filtered, precipitated with about 2.00 parts by volume of concentrated hydrochloric acid and carefully heated to about 70 to 80 C.
The condensation product obtained in this way is made slightly alkaline with the required amount of soda solution after suction and dried. This gives a brown powder which dissolves in water with a brownish yellow color and which dyes wool from acidic liquor in brown shades. The colors are re-chromed to increase the authenticity.
Claims (1)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE191758X | 1934-12-22 | ||
DE231035X | 1935-10-23 | ||
CH188888T | 1935-12-19 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH191758A true CH191758A (en) | 1937-06-30 |
Family
ID=27177774
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH191758D CH191758A (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) | CH191758A (en) |
-
1935
- 1935-12-19 CH CH191758D patent/CH191758A/en unknown
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