CH216114A - Process for the preparation of an azo dye. - Google Patents
Process for the preparation of an azo dye.Info
- Publication number
- CH216114A CH216114A CH216114DA CH216114A CH 216114 A CH216114 A CH 216114A CH 216114D A CH216114D A CH 216114DA CH 216114 A CH216114 A CH 216114A
- Authority
- CH
- Switzerland
- Prior art keywords
- azo dye
- greenish
- gray
- preparation
- 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
- C09B29/00—Monoazo dyes prepared by diazotising and coupling
- C09B29/24—Monoazo dyes prepared by diazotising and coupling from coupling components containing both hydroxyl and amino directing groups
- C09B29/28—Amino naphthols
- C09B29/30—Amino naphtholsulfonic acid
-
- 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)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
Verfahren zur Herstellung eines Azofarbstoffes. Vorliegendes Patent bezieht sich auf ein Verfahren zur Herstellung eines Azofarb- stoffes, dadurch gekennzeichnet, dass man diazotiertes 4,6-Dichlor-2-amino-l-oxybenzol in alkalischem Medium mit 1-Phenylamino- 7-.oxynaphthalin-3-sulfonsäure vereinigt.
Der so erhaltene Farbstoff ist ein grün lich schwarzes Pulver, das sich in Natrium carbonatlösung mit blauer, in verdünnten Mineralsäuren mit olivgrüner und in kon- zentrierter Schwefelsäure mit violetter Farbe löst, und färbt Wolle aus saurem Bade in grüngrauen Tönen, die beim Nachchromieren in ein Olivgrau von ausgezeichneten Echt heitseigenschaften, insbesondere gegen Walke, Dekatur, Potting und Licht, und von guter Abendfarbe, übergehen.
Beispiel: 17,8 Teile 4,6-Diehlor-2-amino-l-oxyben- zol werden in der üblichen Weise diazotiert. Die erhaltene Diazoverbindung trägt man in eine mit überschüssigem Natriumcarbonat versetzte Lösung von 31,5 Teilen 1-Phenyl- amino-7-oxynaphthalin-3-sulfonsäure ein und rührt, 'bis die Kuppelung beendet ist. Dann wird. der Farbstoff abgeschieden und ge trocknet.
Process for the preparation of an azo dye. The present patent relates to a process for the production of an azo dye, characterized in that diazotized 4,6-dichloro-2-amino-1-oxybenzene is combined with 1-phenylamino-7-oxynaphthalene-3-sulfonic acid in an alkaline medium .
The dye obtained in this way is a greenish black powder that dissolves in sodium carbonate solution with blue, in dilute mineral acids with olive green and in concentrated sulfuric acid with violet color, and dyes wool from an acid bath in greenish-gray tones, which turn into a chromium-plating process Olive gray with excellent fastness properties, especially against fulling, decatur, potting and light, and with a good evening color.
Example: 17.8 parts of 4,6-diehlor-2-amino-1-oxybenzene are diazotized in the usual way. The diazo compound obtained is introduced into a solution of 31.5 parts of 1-phenylamino-7-oxynaphthalene-3-sulfonic acid, to which excess sodium carbonate has been added, and the mixture is stirred until the coupling is complete. Then it will be. the dye deposited and dried ge.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE216114X | 1938-06-09 | ||
CH212419T | 1942-12-21 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH216114A true CH216114A (en) | 1941-07-31 |
Family
ID=25725238
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH216114D CH216114A (en) | 1938-06-09 | 1939-06-07 | Process for the preparation of an azo dye. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH216114A (en) |
-
1939
- 1939-06-07 CH CH216114D patent/CH216114A/en unknown
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