CH119901A - Process for the production of a new dye. - Google Patents
Process for the production of a new dye.Info
- Publication number
- CH119901A CH119901A CH119901DA CH119901A CH 119901 A CH119901 A CH 119901A CH 119901D A CH119901D A CH 119901DA CH 119901 A CH119901 A CH 119901A
- Authority
- CH
- Switzerland
- Prior art keywords
- dye
- orange
- new dye
- parts
- production
- 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
- C09B45/00—Complex metal compounds of azo dyes
- C09B45/02—Preparation from dyes containing in o-position a hydroxy group and in o'-position hydroxy, alkoxy, carboxyl, amino or keto groups
- C09B45/14—Monoazo compounds
- C09B45/16—Monoazo compounds containing chromium
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Coloring (AREA)
Description
Verfahren zur Herstellung eines neuen Farbstoffes. Es wurde gefunden, dass man einen neuen Farbstoff erhält, wenn man das o-Aminophenol diazotiert, hierauf mit 1-(3'- Sulfamido) - pheny 1- 3 - methyl - 5 - pyrazolon kuppelt und den so erhaltenen Farbstoff mit Alkalichromiten behandelt.
Der neue Farbstoff bildet ein orangebraunes Pulver, löst sich in Wasser und in verdünnter Natron lauge mit oranger, in konzentrierter Sehwe- felsäure mit gelber Farbe und färbt Wolle aus saurem Bade in orangen Tönen mit vor züglichen Eigenschaften.
<I>Beispiel</I> 10,9 Teile o-Aminophenol werden in üb licher Weise mit 6,9 Teilen Natriumnitrit diazotiert. Die Diazolösung lä,sst man in eine eiskalte Lösung von 25,3 Teilen 1-(3'-Sul- famido)-phenyl-3-methyl-5-pyrazolon und 30 Teilen Soda in 250 Teilen Wasser unter Rühren einfliessen. Die Reaktionsmasse wird nach vollendeter Kupplung auf<B>50'</B> ange wärmt und,der Farbstoff mit Kochsalz aus gesalzen und und wie üblich isoliert.
39,9 Teile des so erhaltenen Farbstoffes werden in eine kochende Lösung enthaltend 8,5 Teile Cr203, 200 Teile Wasser, 28 Teile Ätzkali und 10 Teile Glyzerin eingetragen und längere Zeit gekocht. Nach Verdünnen mit 200 Teilen Wasser wird filtriert und der neue Farbstoff aus dem Filtrat durch Neu tralisieren und Aussahen isoliert.
Process for the production of a new dye. It has been found that a new dye is obtained if the o-aminophenol is diazotized, then coupled with 1- (3'-sulfamido) -pheny 1-3-methyl-5-pyrazolone and the dye thus obtained is treated with alkali chromites.
The new dye forms an orange-brown powder, dissolves in water and in dilute caustic soda with orange, in concentrated sulfuric acid with yellow color and dyes wool from acid baths in orange tones with excellent properties.
<I> Example </I> 10.9 parts of o-aminophenol are diazotized in the usual way with 6.9 parts of sodium nitrite. The diazo solution is poured into an ice-cold solution of 25.3 parts of 1- (3'-sulphamido) -phenyl-3-methyl-5-pyrazolone and 30 parts of soda in 250 parts of water with stirring. After coupling is complete, the reaction mass is heated to <B> 50 '</B> and the dye is salted with common salt and isolated as usual.
39.9 parts of the dye thus obtained are introduced into a boiling solution containing 8.5 parts of Cr 2 O 3, 200 parts of water, 28 parts of caustic potash and 10 parts of glycerol and boiled for a long time. After dilution with 200 parts of water, the mixture is filtered and the new dye is isolated from the filtrate by neutralizing and looking.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH117996T | 1925-07-03 | ||
CH119901T | 1925-07-03 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH119901A true CH119901A (en) | 1927-04-16 |
Family
ID=25708935
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH119901D CH119901A (en) | 1925-07-03 | 1925-07-03 | Process for the production of a new dye. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH119901A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2673201A (en) * | 1954-03-23 | Cobaltiferous azo-dyestuffs | ||
DE971896C (en) * | 1951-08-13 | 1959-04-09 | Ciba Geigy | Process for the production of cobalt-containing azo dyes |
-
1925
- 1925-07-03 CH CH119901D patent/CH119901A/en unknown
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2673201A (en) * | 1954-03-23 | Cobaltiferous azo-dyestuffs | ||
DE971896C (en) * | 1951-08-13 | 1959-04-09 | Ciba Geigy | Process for the production of cobalt-containing azo dyes |
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