CH215830A - Process for the preparation of an azo dye. - Google Patents
Process for the preparation of an azo dye.Info
- Publication number
- CH215830A CH215830A CH215830DA CH215830A CH 215830 A CH215830 A CH 215830A CH 215830D A CH215830D A CH 215830DA CH 215830 A CH215830 A CH 215830A
- Authority
- CH
- Switzerland
- Prior art keywords
- azo dye
- color
- preparation
- blue
- tinged
- 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)
- 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 Azofarbstoffes, dadurch gekennzeichnet, dass man die Diazo- verbindung von 4,6-Dichlor-2-aminophenol mit dem N-Phenylharnstoff der 1-Amino-7-oxy- naphthalin-3-sulfonsäure vereinigt.
Der so erhaltene Farbstoff ist getrocknet ein dunkles Pulver, das sich in Na.trium- carbonatlösung mit blauer, in konzentrierter Schwefelsäure mit blaustichigroter Farbe löst. Er färbt Wolle aus saurem Bade in violetten Tönen, die beim Chromieren in ein grün- stichiges Blaugrau von ausgezeichneten Echt heitseigenschaften und schöner Abendfarbe übergehen.
<I>Beispiel:</I> 17,8 Teile 4,6-Dichlor-2-aminophenol wer den diazotiert und die Diazoverbindung ab geschieden. Die so erhaltene Paste trägt man in eine mit überschüssigem Natriumcarbonat versetzte Lösung von 35,8 Teilen N-Phenyl- harnstoff der 1 - Amino -7- oxynaphthalin - 3 - sulfonsäure ein und rührt, bis die Kupplung beendet ist. Der Farbstoff wird abgeschieden und getrocknet.
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 the diazo compound of 4,6-dichloro-2-aminophenol with the N-phenylurea of 1-amino-7-oxynaphthalene-3-sulfonic acid united.
The dye obtained in this way is dried, a dark powder which dissolves in sodium carbonate solution with a blue color and in concentrated sulfuric acid with a bluish-tinted red color. It dyes wool from an acid bath in violet tones, which when chromed turn into a green-tinged blue-gray with excellent fastness properties and a beautiful evening color.
<I> Example: </I> 17.8 parts of 4,6-dichloro-2-aminophenol are diazotized and the diazo compound is separated off. The paste obtained in this way is introduced into a solution of 35.8 parts of N-phenylurea of 1-amino-7-oxynaphthalene-3-sulfonic acid, to which excess sodium carbonate has been added, and the mixture is stirred until the coupling has ended. The dye is deposited and dried.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE215830X | 1939-02-18 | ||
CH211927T | 1939-03-23 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH215830A true CH215830A (en) | 1941-07-15 |
Family
ID=25725120
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH215830D CH215830A (en) | 1939-02-18 | 1939-03-23 | Process for the preparation of an azo dye. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH215830A (en) |
-
1939
- 1939-03-23 CH CH215830D patent/CH215830A/en unknown
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CH215830A (en) | Process for the preparation of an azo dye. | |
CH216114A (en) | Process for the preparation of an azo dye. | |
CH215825A (en) | Process for the preparation of an azo dye. | |
CH216119A (en) | Process for the preparation of an azo dye. | |
CH214546A (en) | Process for the preparation of an azo dye. | |
CH215827A (en) | Process for the preparation of an azo dye. | |
CH215826A (en) | Process for the preparation of an azo dye. | |
CH215829A (en) | Process for the preparation of an azo dye. | |
CH222130A (en) | Process for the preparation of a disazo dye. | |
CH224349A (en) | Process for the preparation of an azo dye. | |
CH177821A (en) | Process for the preparation of an o-oxyazo dye. | |
CH215828A (en) | Process for the preparation of an azo dye. | |
CH177461A (en) | Process for the preparation of a new monoazo dye. | |
CH224350A (en) | Process for the preparation of an azo dye. | |
CH266278A (en) | Process for the preparation of an o, o'-dioxyazo dye. | |
CH185845A (en) | Process for the preparation of an azo dye. | |
CH205819A (en) | Process for the preparation of a monoazo dye. | |
CH224348A (en) | Process for the preparation of an azo dye. | |
CH165410A (en) | Process for the production of a new azo dye. | |
CH222127A (en) | Process for the preparation of a monoazo dye. | |
CH202741A (en) | Process for the preparation of an azo dye. | |
CH194092A (en) | Process for the preparation of an azo dye. | |
CH217968A (en) | Process for the preparation of an o-oxyazo dye. | |
CH224347A (en) | Process for the preparation of an azo dye. | |
CH177467A (en) | Process for the preparation of a new monoazo dye. |