CH259034A - Process for the preparation of a metallizable monoazo dye. - Google Patents
Process for the preparation of a metallizable monoazo dye.Info
- Publication number
- CH259034A CH259034A CH259034DA CH259034A CH 259034 A CH259034 A CH 259034A CH 259034D A CH259034D A CH 259034DA CH 259034 A CH259034 A CH 259034A
- Authority
- CH
- Switzerland
- Prior art keywords
- red
- oxy
- monoazo dye
- creates
- preparation
- 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
- C09B3/00—Dyes with an anthracene nucleus condensed with one or more carbocyclic rings
- C09B3/02—Benzathrones
- C09B3/06—Preparation from starting materials already containing the benzanthrone nucleus
- C09B3/10—Amino derivatives
-
- 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 metallisierbaren Monoazofarbstoffes. Gegenstand vorliegenden Patentes ist ein Verfahren zur Herstellung eines metallisier- baren Monoazofarbstoffes. Das Verfahren ist dadurch gekennzeichnet,
dass man diazotierte 2 -- Amino-benzol -1-methylsulfon-4 - s.ulfon- säurephenylamid-4'-oxy-3'-carbonsäure in saurem Medium mit 2-Amino-8-oxy-naphtha- lin-6=sulfonsäure kuppelt.
Der entstandene neue Farbstoff stellt ein rotviolettes Pulver dar, das sich in Wasser mit blauroter Farbe und in konzentrierter ,Schwefelsäure mit dunkelbrauner Farbe löst. Im Chromdruck auf Baumwolle erzeugt er eine blaustichig rote Nuance, auf Wolle aus saurem Bade ebenfalls ein blaustichiges Rot, das sich beim Nachchromie@ren kaum ver ändert.
<I>Beispiel:</I> 38,6 Teile 2-Amino-benzol-1-methylsul- fan - 4 -sulf onsäure-phenylamid-4'- oxy-3'-car- bonsäure werden in 300 Teilen Wasser neu tral gelöst, die Lösung von 6,9 Teilen Na triumnitrit in 100 Teilen Wasser zugesetzt und die Mischung bei 0 bis 3 unter Rühren auf 40 Teile konzentrierte Salzsäure und die nötige Menge Eis getropft. Die gelbbraune Diazoverbindung fällt zum grössten Teil aus.
Nach beendeter Diazotierung wird zur Diazo- suspension, die deutlich kongosauer reagieren und keine freie salpetrige Säure mehr ent- halten soll, bei 0 bis 5 , innert einer Stunde eine schwach saure Lösung von 23,9 Teilen 2-Amino-8-oxy-naphthalin-6-sulfonsäure in 100 Teilen Wasser zugegeben.
Nach zwei bis drei Stunden wird durch Zutropfen von Na- triumacetatlösung die kongosaure Reaktion zum Verschwindens gebracht und, noch sech zehn Stunden, bei 20 weitergerührt. Dann werden 40 Teile konzentrierte Salzsäure und 10 % Kochsalz zugesetzt und hierauf der aus geschiedene Farbstoff isoliert und getrocknet.
Process for the preparation of a metallizable monoazo dye. The subject of the present patent is a process for the production of a metallizable monoazo dye. The procedure is characterized by
that one diazotized 2-amino-benzene-1-methylsulfon-4-s-sulfonic acid-phenylamide-4'-oxy-3'-carboxylic acid in an acidic medium with 2-amino-8-oxy-naphthalin-6 = sulfonic acid clutch.
The resulting new dye is a red-violet powder that dissolves in water with a blue-red color and in concentrated sulfuric acid with a dark-brown color. In the chrome print on cotton it creates a bluish red shade, on wool from acid bath it also creates a bluish red that hardly changes when it is chromed.
<I> Example: </I> 38.6 parts of 2-amino-benzene-1-methylsulphane-4-sulfonic acid-phenylamide-4'-oxy-3'-carboxylic acid become neutral in 300 parts of water dissolved, the solution of 6.9 parts of sodium nitrite in 100 parts of water was added and the mixture was added dropwise at 0 to 3 with stirring to 40 parts of concentrated hydrochloric acid and the necessary amount of ice. Most of the yellow-brown diazo compound precipitates.
After the end of the diazotization, a weakly acidic solution of 23.9 parts of 2-amino-8-oxy-naphthalene becomes a weakly acidic solution of 23.9 parts of 2-amino-8-oxynaphthalene within one hour at 0 to 5, to form the diazotization, which is clearly acidic to the Congo and should no longer contain any free nitrous acid -6-sulfonic acid in 100 parts of water was added.
After two to three hours, the Congo acidic reaction is made to disappear by adding dropwise sodium acetate solution and stirring is continued at 20 for another sixteen hours. 40 parts of concentrated hydrochloric acid and 10% sodium chloride are then added and the dyestuff which has separated out is then isolated and dried.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH253954T | 1946-12-20 | ||
CH259034T | 1947-08-13 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH259034A true CH259034A (en) | 1948-12-31 |
Family
ID=25729802
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH259034D CH259034A (en) | 1946-12-20 | 1947-08-13 | Process for the preparation of a metallizable monoazo dye. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH259034A (en) |
-
1947
- 1947-08-13 CH CH259034D patent/CH259034A/en unknown
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