CH274138A - Process for the preparation of a monoazo dye. - Google Patents
Process for the preparation of a monoazo dye.Info
- Publication number
- CH274138A CH274138A CH274138DA CH274138A CH 274138 A CH274138 A CH 274138A CH 274138D A CH274138D A CH 274138DA CH 274138 A CH274138 A CH 274138A
- Authority
- CH
- Switzerland
- Prior art keywords
- preparation
- dye
- red
- fastness
- monoazo dye
- 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 Monoazofarbstoffes. Das vorliegende Patent betrifft ein Ver- faliren zur Herstellung eines neuen ehromier- baren -illoiioazofarbstoffes, dadurch gekenn zeichnet, dass man l.-Oxy-2-aminobenzol-l- cliloi--6-sulfonsäureanilid dianotiert und mit 1-1'lic,nvl-5-pyrazolon-3-earbonsäureamid kup pelt.
Die Teile des Beispiels sind Gewichtsteile. Beispiel: 29,8 Teile 1-Oxy-2-aniinobenzol-4-Chlor-6- sulfonsäureanilid werden mit 6,9 Teilen Na triumnitrit in üblicher Weise indirekt. diano tiert und die Diazosuspension mit. 21 Teilen 1-Phenvl-5-pyrazolon-3-carbonsäureamid, das ii! 100 Teilen Wasser mit überschüssigem Ammoniak gelöst ist, vereinigt.
Nach mehr stündigem Rühren bei 7.0 bis 150 wird der ausgefallene Farbstoff auf geeignete Weise aufgearbeitet. Getrocknet stellt der Farbstoff ein braunrotes Pulver dar, das sieh in konzen trierter Schwefelsäure und in verdünnter Na tronlauge mit ziegelroter Farbe löst. Naehehromiert und inetachrom neutral wird Wolle in blaustichig roten Tönen ge färbt. Die Färbungen besitzen eine hervor ragende Lichtechtheit, sehr gute Karbonisier- eelitheit und. gute Nasseehtheiten.
Process for the preparation of a monoazo dye. The present patent relates to a process for the production of a new honorable -illoiioazo dye, characterized in that 1.-oxy-2-aminobenzene-l-cliloi-6-sulfonic anilide is dianotated and with 1-1'lic, nvl-5-pyrazolon-3-carboxamide kup pelt.
The parts of the example are parts by weight. Example: 29.8 parts of 1-oxy-2-aniinobenzene-4-chloro-6-sulfonic acid anilide are trium nitrite with 6.9 parts of sodium in the usual indirect manner. diano tiert and the diazo suspension with. 21 parts of 1-Phenvl-5-pyrazolon-3-carboxamide, the ii! 100 parts of water is dissolved with excess ammonia, combined.
After several hours of stirring at 7.0 to 150, the precipitated dye is worked up in a suitable manner. When dried, the dye is a brownish-red powder that dissolves in concentrated sulfuric acid and dilute sodium hydroxide solution with a brick-red color. Close-chromed and inetachrome neutral, wool is dyed in blue-tinged red tones. The dyeings have excellent lightfastness, very good carbonizability and. good wetness.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH270833T | 1949-01-21 | ||
CH274138T | 1949-01-21 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH274138A true CH274138A (en) | 1951-03-15 |
Family
ID=25731260
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH274138D CH274138A (en) | 1949-01-21 | 1949-01-21 | Process for the preparation of a monoazo dye. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH274138A (en) |
-
1949
- 1949-01-21 CH CH274138D patent/CH274138A/en unknown
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