CH307181A - Process for the production of a copperable azo dye. - Google Patents
Process for the production of a copperable azo dye.Info
- Publication number
- CH307181A CH307181A CH307181DA CH307181A CH 307181 A CH307181 A CH 307181A CH 307181D A CH307181D A CH 307181DA CH 307181 A CH307181 A CH 307181A
- Authority
- CH
- Switzerland
- Prior art keywords
- azo dye
- fumaric acid
- copperable
- copper
- 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
- C09B43/00—Preparation of azo dyes from other azo compounds
- C09B43/12—Preparation of azo dyes from other azo compounds by acylation of amino groups
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Coloring (AREA)
Description
Zusatzpatent zum Hauptpatent Nr. 290294. Verfahren zur Herstellung eines kupferbaren Azofarbstoffes. Gegenstand des vorliegenden Patentes ist ein Verfahren zur Herstellung eines kupfer baren Azofarbstoffes, welches darin besteht, dass man 1 Mol der Aminomonoazoverbindung der Zusammensetzung
EMI0001.0005
vorteilhaft in wässerigem Medium und in Gegenwart eines säurebindenden Mittels, mit 1 Mol eines Fumarsäuredihalogenids umsetzt.
Im nachfolgenden Beispiel bedeuten die Teile Gewichtsteile.
<I>Beispiel:</I> 30 Teile der Aminomonoazoverbindung der Zusammensetzung (I) und 23,5 Teile der Aminomonoazoverbindung der Zusammenset zung (II) werden unter Zugabe eines über schusses an Lithiumcarbonat in 2500 Teilen Wasser gelöst. Die so erhaltene Farbstoff lösung wird auf ungefähr 5 gekühlt und unter möglichst gutem Rühren in 2-3 Stun den mit so viel einer Mischung von 20 Teilen Fumarsäuredichlorid in 80 Teilen Methylben- zol versetzt, bis die Reaktionslösung keine freien Aminogruppen mehr enthält.
Nun er wärmt man sie auf 85-90 , isoliert den gebil deten Disazofarbstoff auf bekannte Art und trocknet und mahlt ihn.
Der neue kupferbare Azofarbstoff ist ein orangefarbenes Pulver, das sich in Wasser mit gelber und in konzentrierter Schwefelsäure mit orangeroter Farbe löst. Er färbt Baum wolle und Fasern aus regenerierter Cellulose in klaren gelben Tönen, welche, besonders wenn sie mit kupferabgebenden Mitteln be handelt werden, ausgezeichnete Nass- und Lichtechtheiten besitzen.
Additional patent to main patent no. 290294. Process for the production of a copper-compatible azo dye. The subject of the present patent is a process for the preparation of a copper ble azo dye, which consists in that one mole of the aminomonoazo compound of the composition
EMI0001.0005
advantageously in an aqueous medium and in the presence of an acid-binding agent, with 1 mol of a fumaric acid dihalide.
In the following example, the parts are parts by weight.
<I> Example: </I> 30 parts of the aminomonoazo compound of the composition (I) and 23.5 parts of the aminomonoazo compound of the composition (II) are dissolved in 2500 parts of water with the addition of an excess of lithium carbonate. The dye solution obtained in this way is cooled to about 5 and, while stirring as well as possible, a mixture of 20 parts of fumaric acid dichloride in 80 parts of methylbenzene is added in 2-3 hours until the reaction solution no longer contains any free amino groups.
Now it is warmed to 85-90, the disazo dye formed is isolated in a known manner, and it is dried and ground.
The new copperable azo dye is an orange powder that dissolves in water with a yellow color and in concentrated sulfuric acid with an orange-red color. It dyes cotton and regenerated cellulose fibers in clear yellow tones, which, especially when they are treated with copper-releasing agents, have excellent wet and light fastness properties.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH307181T | 1952-06-16 | ||
CH290294T | 1952-09-04 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH307181A true CH307181A (en) | 1955-05-15 |
Family
ID=25732954
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH307181D CH307181A (en) | 1952-06-16 | 1952-06-16 | Process for the production of a copperable azo dye. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH307181A (en) |
-
1952
- 1952-06-16 CH CH307181D patent/CH307181A/en unknown
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