CH234512A - Process for the preparation of a related dye. - Google Patents
Process for the preparation of a related dye.Info
- Publication number
- CH234512A CH234512A CH234512DA CH234512A CH 234512 A CH234512 A CH 234512A CH 234512D A CH234512D A CH 234512DA CH 234512 A CH234512 A CH 234512A
- Authority
- CH
- Switzerland
- Prior art keywords
- dye
- acid
- preparation
- converted
- yellow 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
- C09B43/00—Preparation of azo dyes from other azo compounds
- C09B43/08—Preparation of azo dyes from other azo compounds by reduction
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Coloring (AREA)
Description
Zusatzpatent zum Hauptpatent Nr. 219932. Verfahren zur Herstellung eines beizenziehenden Farbstoffes. Geigenstand des vorliegenden Zusatz patentes ist ein Verfahren zur Damstellung eines bemzenzieh enden Farbstoffes, dadurch gekennzeichnet, @dass .diazotierte 2-Amino-3- ni'trobenzol-l-carbon,
s@ä.ure mit 2-Oxynaphthia- lin-4-sulfonsäure gekuppelt und der Azofarb- stoff durch Reduktion in das Triazolderivat übergeführt wird.
Der neue Farbstaff, ein grängtichig gelbes Pulver, ist in Wasser mit gelber, in konzentrierter Schwefelsäure mit schwacher grünlichgelber Farbe löslich;
er färbt 'Wolle aus saurem Bad in gelblichen Tönen, die beim Nachchromieren intensiver werden und gute bis hervorragende Echt- heitseigenschaften besitzen.
Beispiel: 23 Teile des Farbstoffes aus,diazotierter 3-Nitro-2-aminob,enzoesäure und 2-Naphthol- 4-sulfonsäure werden in 200 Teilen heissem Wasser gelöst und in die rote Lösung inner- halb von 15 Minuten unter Rühmen,
bei 80 bis 100 20 Teile einer Ammoniumsulfid- lösung zugetropft, die 1 Grammalom. (NIQ2S in 300 g Lösung enthält, wobei unter Aus- scheidung von Schwefel eine gelbe Lösung entsteht. Man klärt, setzt 10 Teile Natron- lauge von 36 Be zu und streut innert 30 Mi nuten 12,
5 Teile Natriumhyposulfit von 85 Gehalt portionenweise unter Rühren bei 70 bis 80 ein. Man hält noch eine Stunde bei 80 , versetzt dann mit 35 Teilen 30 % iger Salzsäure, kocht kurz auf und kühlt ab. Der Farbstoff .scheidet sich als fast farbloses Pul ver aus, das nach Odem Erkalten abgesogen und getrocknet wird.
Additional patent to main patent no. 219932. Process for the production of a co-licensing dye. The violin status of the present additional patent is a process for the production of a decorative dye, characterized in that .diazotized 2-amino-3-ni'trobenzene-l-carbon,
s@ä.ure is coupled with 2-oxynaphthialine-4-sulfonic acid and the azo dye is converted into the triazole derivative by reduction.
The new coloring, a yellowish yellow powder, is soluble in water with a yellow color, in concentrated sulfuric acid with a pale greenish-yellow color;
it dyes wool from an acid bath in yellowish tones, which become more intensive when chromium plating and have good to excellent fastness properties.
Example: 23 parts of the dye from diazotized 3-nitro-2-aminob, enzoic acid and 2-naphthol-4-sulfonic acid are dissolved in 200 parts of hot water and poured into the red solution within 15 minutes with stirring,
at 80 to 100 20 parts of an ammonium sulfide solution are added dropwise, the 1 gramalom. (NIQ2S contains 300 g of solution, whereby a yellow solution is formed with the excretion of sulfur. It is clarified, 10 parts of 36 Be caustic soda are added and sprinkled within 30 minutes 12,
5 parts of sodium hyposulfite of 85 content in portions with stirring at 70 to 80. The temperature is kept at 80 for another hour, 35 parts of 30% strength hydrochloric acid are then added, the mixture is briefly boiled and then cooled. The dye separates out as an almost colorless powder, which is sucked off and dried after the breath has cooled down.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH234512T | 1941-10-17 | ||
CH219932T | 1941-10-17 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH234512A true CH234512A (en) | 1944-09-30 |
Family
ID=25726374
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH234512D CH234512A (en) | 1941-10-17 | 1941-10-17 | Process for the preparation of a related dye. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH234512A (en) |
-
1941
- 1941-10-17 CH CH234512D patent/CH234512A/en unknown
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