CH117996A - Process for the production of a new dye. - Google Patents
Process for the production of a new dye.Info
- Publication number
- CH117996A CH117996A CH117996DA CH117996A CH 117996 A CH117996 A CH 117996A CH 117996D A CH117996D A CH 117996DA CH 117996 A CH117996 A CH 117996A
- Authority
- CH
- Switzerland
- Prior art keywords
- orange
- new dye
- 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 2-Amino-l- oxybenzol-4-sulfamid diazotiert, hierauf mit 1-(3'-Sulfamido) =.phenyl-3-methyl-5-pyrazo- lon kuppelt und den so erhaltenen Farbstoff mit Chromformiat behandelt.
Der neue Farb stoff bildet ein orangebraunes Pulver, löst sich in Wasser und in 10 %iger Natronlauge mit oranger, in konzentrierter Schwefelsäure mit gelber Farbe und färbt Wolle, vor allem lose Wolle oder Kammzug, aus saurem Bade in Orangetönen mit vorzüglichen Echt heitseigenschaften.
<I>Beispiel:</I> 188 Teile 2-,Amino-l-oxybenzol-4-sulfa- mid werden in 600 Teilen Wasser und 150 Teilen 30 %iger Salzsäure gelöst, bei<B>5'</B> mit 69 Teilen Natriumnitrit diazotiert und in eine eiskalte, .dauernd sodaalkalisch gehal tene Lösung von 253 Teilen 1-(3'-Sulfamido)- phenyl-3-methyl-5-pyrazolon eingerührt.
Nach beendeter Reaktion wird der völlig ausge schiedene Farbstoff abfiltriert. Er kann durch Lösen in Wasser bei<B>85-90'</B> und Auskristallisierenlassen gereinigt werden. 45,2 Teile, des Azofarbstoffes aus 2 Amino-l-axybenzol-4-sulfamid und 1-(3'-Sul- famido)-phenyl-3-methyl-5-pyrazolon werden in 1000 Teilen kochendem Wasser gelöst, mit einer Chromformiatlösung entsprechend 15.2 Teilen Cr203 versetzt und längere Zeit am Rückflusskühler gekocht. Hierauf wird die Chromverbindung durch Aussalzen gewon nen.
Process for the preparation of a new dye: It has been found that a new dye is obtained if the 2-amino-l-oxybenzene-4-sulfamide is diazotized, then with 1- (3'-sulfamido) = .phenyl-3 -methyl-5-pyrazolone coupled and treated the dye thus obtained with chromium formate.
The new dye forms an orange-brown powder, dissolves in water and in 10% sodium hydroxide solution with orange, in concentrated sulfuric acid with a yellow color and dyes wool, especially loose wool or sliver, from an acid bath in shades of orange with excellent fastness properties.
<I> Example: </I> 188 parts of 2-, amino-1-oxybenzene-4-sulfamide are dissolved in 600 parts of water and 150 parts of 30% hydrochloric acid, with <B> 5 '</B> with 69 parts of sodium nitrite are diazotized and stirred into an ice-cold solution of 253 parts of 1- (3'-sulfamido) -phenyl-3-methyl-5-pyrazolone.
After the reaction has ended, the completely separated dye is filtered off. It can be cleaned by dissolving it in water at <B> 85-90 '</B> and letting it crystallize. 45.2 parts of the azo dye from 2 amino-1-axybenzene-4-sulfamide and 1- (3'-sulfamido) -phenyl-3-methyl-5-pyrazolone are dissolved in 1000 parts of boiling water with a chromium formate solution 15.2 parts of Cr203 were added accordingly and boiled for a long time on the reflux condenser. The chromium compound is then won by salting out.
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH117996T | 1925-07-03 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH117996A true CH117996A (en) | 1926-12-01 |
Family
ID=4376977
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH117996D CH117996A (en) | 1925-07-03 | 1925-07-03 | Process for the production of a new dye. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH117996A (en) |
-
1925
- 1925-07-03 CH CH117996D patent/CH117996A/en unknown
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