CH265416A - Process for the preparation of a stilbene dye. - Google Patents
Process for the preparation of a stilbene dye.Info
- Publication number
- CH265416A CH265416A CH265416DA CH265416A CH 265416 A CH265416 A CH 265416A CH 265416D A CH265416D A CH 265416DA CH 265416 A CH265416 A CH 265416A
- Authority
- CH
- Switzerland
- Prior art keywords
- dye
- parts
- water
- stilbene
- red 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
- C09B56/00—Azo dyes containing other chromophoric systems
- C09B56/04—Stilbene-azo dyes
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Coloring (AREA)
Description
<B>Zusatzpatent</B> zum Hauptpatent Nr. 260575. Verfahren zur Herstellung eines Stilbenfarbstoffes. Gegenstand vorliegenden Patentes ist ein Verfahren zur Herstellung eines Stilbenfarb- stoffes. Das Verfahren ist dadurch gekenn-
EMI0001.0004
mit dem Monoazofarbstoff aus diazotierter Anthranilsäure und 2 - Amino - 5 - oxy - naph- thalin-7-sulfonsäure in alkalischem Medium kondensiert wird.
Der neue Farbstoff stellt ein braunes Pulver dar, das sich in Wasser mit roter Farbe löst und Cellulosefasern in roten Tönen färbt. Nachgekupfert erhält man eine braunrote Färbung von guter Wasch- und Wasserechtheit sowie sehr guter Licht echtheit.
<I>Beispiel:</I> 40 Teile diazotierte 4,4'-Nitroamino-stilben- 2,2'-disulfonsäure werden mit 35 Teilen 5-Amino-2- (4'-oxy-3'-carboxy-5'-sulf o-phenyl) - 1,3-benztriazol gekuppelt. Der rote Farbstoff wird abfiltriert, in 3000 bis 4000 Teilen heissem Wasser mit Ammoniak gelöst und mit einer Lösung von 60 Teilen kristallisiertem Kupfersulfat und 120 Teilen konzentriertem- Ammoniak bei 95-98 oxydiert.
Der Kupfer- zeichnet, dass ein Nitrostilben-bis-triazol der Formel komplex des Bistriazols wird durch Erhitzen mit Salzsäure aufgespalten; nach dem Isolie ren erhält man das Nitrostilben-bis-triazol als gelbe Substanz.
Kondensiert man 75,9 Teile dieses Stilben- bis-triazols mit 34,9 Teilen des Monoazofarib- stoffes aus diazotierter Anthranilsäure und 2-Amino-5-oxy-naphthalin-7-sulfonsäure in 9000 Teilen Wasser und 500 Teilen Natron lauge 36 B6, so erhält man nach dem Isolie ren ein braunes Pulver.
Behandelt man den Farbstoff in Substanz bei schwach saurer Reaktion mit Kupfer salzen, so erhält man den metallisierten Farb stoff als dunkelbraunes Pulver.
<B> Additional patent </B> to main patent no. 260575. Process for the production of a stilbene dye. The subject of the present patent is a process for the production of a stilbene dye. The procedure is characterized by
EMI0001.0004
is condensed with the monoazo dye from diazotized anthranilic acid and 2 - amino - 5 - oxy - naphthalene-7-sulfonic acid in an alkaline medium.
The new dye is a brown powder that dissolves in water with a red color and dyes cellulose fibers in red tones. After copying, the result is a brown-red color with good wash and water fastness and very good light fastness.
<I> Example: </I> 40 parts of diazotized 4,4'-nitroamino-stilbene-2,2'-disulfonic acid are mixed with 35 parts of 5-amino-2- (4'-oxy-3'-carboxy-5 ' -sulf o-phenyl) - 1,3-benzotriazole coupled. The red dye is filtered off, dissolved in 3,000 to 4,000 parts of hot water with ammonia and oxidized with a solution of 60 parts of crystallized copper sulfate and 120 parts of concentrated ammonia at 95-98.
The copper denotes that a nitrostilbene-bis-triazole of the formula complex of bistriazole is broken down by heating with hydrochloric acid; after isolating the ren, nitrostilbene-bis-triazole is obtained as a yellow substance.
If 75.9 parts of this stilbene-bis-triazole are condensed with 34.9 parts of the monoazofarib- substance from diazotized anthranilic acid and 2-amino-5-oxy-naphthalene-7-sulfonic acid in 9000 parts of water and 500 parts of sodium hydroxide solution 36 B6, after isolating a brown powder is obtained.
If you treat the dye in substance with a weakly acidic reaction with copper salts, the metallized dye is obtained as a dark brown powder.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH260575T | 1944-11-24 | ||
CH265416T | 1944-11-24 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH265416A true CH265416A (en) | 1949-11-30 |
Family
ID=25730315
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH265416D CH265416A (en) | 1944-11-24 | 1944-11-24 | Process for the preparation of a stilbene dye. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH265416A (en) |
-
1944
- 1944-11-24 CH CH265416D patent/CH265416A/en unknown
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