CH259322A - Process for the production of a copper-containing azo dye. - Google Patents
Process for the production of a copper-containing azo dye.Info
- Publication number
- CH259322A CH259322A CH259322DA CH259322A CH 259322 A CH259322 A CH 259322A CH 259322D A CH259322D A CH 259322DA CH 259322 A CH259322 A CH 259322A
- Authority
- CH
- Switzerland
- Prior art keywords
- copper
- containing azo
- mol
- dye
- parts
- Prior art date
Links
Landscapes
- Coloring (AREA)
Description
Verfahren zur Herstellung eines kupferhaltigen Azofarbstoffes. Das vorliegende Patent betrifft ein Ver fahren zur Herstellung eines neuen kupfer haltigen Azofarbstoffes und ist dadurch ge kennzeichnet, dass man 1 Mol tetra.zotiertes Dianisidin mit 1 Mol 1-Oxynaphthalin-3,6,8- trisulfonsäure und 1 Mol 2-Sulfo-4-oxy-a,ss- naphtho-10-methoxyphenazin kuppelt und den erhaltenen Farbstoff mit einem kupferabge benden Mittel behandelt.
Im Beispiel bedeuten Teile Gewichtsteile. <I>Beispiel:</I> 24,4 Teile Dianisidin werden wie üblich tetrazotiert und unter Eiskühlung mit 38,4 Teilen 1-Oxynaphthalin-3,6,8-trisulfosäure in Gegenwart von Soda vereinigt. Nach erfolg ter Bildung der Zwischenverbindung wird eine alkalische Lösung des Natriumsalzes von 35,6 Teilen 2-Sulfo-4-oxy-a,ss-naphtho-10-- methoxypbenazin zugefügt. Zur Beförderung der Kupplung kann man 5 bis 10 Volum- pcozent Pyridinbasengemisch zusetzen. Nach beendeter Kupplung isoliert man den Farb stoff.
Er löst sich in Wasser mit. grtinstichig blauer und in konzentrierter Schwefelsäure mit grüner Farbe.
Zur Überführung in den Kupferkomplex werden 1(19,4 Teile Farbstoff in 3000 Teilen Wasser und 20 Teilen Soda gelöst. Bei 80 bis 90 werden unter Rühren allmählich 500 Teile einer Kupferoxydammoniaklösung, ent haltend 50 Teile krist. Kupfersulfat und 85 Teile konzentrierte wässrige Ammoniak- lösung, zugefügt.. Es wird 5 Stunden bei 90 gerührt und dann 18 Stunden unter Rück fluss gekocht. Der entstandene Kupferkomplex wird isoliert, filtriert und getrocknet.
Er färbt Baumwolle und regenerierte Cellulose in grünstichig graublauen Tönen von sehr guter Licht- und Waschechtheit.
Process for the production of a copper-containing azo dye. The present patent relates to a process for the production of a new copper-containing azo dye and is characterized in that 1 mol of tetra.zotierter dianisidine is mixed with 1 mol of 1-oxynaphthalene-3,6,8-trisulfonic acid and 1 mol of 2-sulfo-4 -oxy-a, ss- naphtho-10-methoxyphenazine couples and the dye obtained is treated with a copper-releasing agent.
In the example, parts mean parts by weight. <I> Example: </I> 24.4 parts of dianisidine are tetrazotized as usual and combined with 38.4 parts of 1-oxynaphthalene-3,6,8-trisulfonic acid in the presence of soda, while cooling with ice. After formation of the intermediate compound, an alkaline solution of the sodium salt of 35.6 parts of 2-sulfo-4-oxy-a, ss-naphtho-10-- methoxypbenazine is added. To promote the coupling, 5 to 10 percent by volume of a pyridine base mixture can be added. After the coupling is complete, the dye is isolated.
It dissolves in water with. Basically blue and in concentrated sulfuric acid with a green color.
To convert to the copper complex, 1 (19.4 parts of dye are dissolved in 3000 parts of water and 20 parts of soda. At 80 to 90, 500 parts of a copper oxide ammonia solution containing 50 parts of crystalline copper sulfate and 85 parts of concentrated aqueous ammonia are gradually added with stirring. solution, added .. The mixture is stirred for 5 hours at 90 and then refluxed for 18 hours The copper complex formed is isolated, filtered and dried.
It dyes cotton and regenerated cellulose in greenish gray-blue shades of very good lightfastness and washfastness.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH259322T | 1946-12-13 | ||
CH253479T | 1952-07-09 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH259322A true CH259322A (en) | 1949-01-15 |
Family
ID=25729756
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH259322D CH259322A (en) | 1946-12-13 | 1946-12-13 | Process for the production of a copper-containing azo dye. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH259322A (en) |
-
1946
- 1946-12-13 CH CH259322D patent/CH259322A/en unknown
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