CH177834A - Process for the production of a copper-containing dye. - Google Patents
Process for the production of a copper-containing dye.Info
- Publication number
- CH177834A CH177834A CH177834DA CH177834A CH 177834 A CH177834 A CH 177834A CH 177834D A CH177834D A CH 177834DA CH 177834 A CH177834 A CH 177834A
- Authority
- CH
- Switzerland
- Prior art keywords
- copper
- dye
- parts
- containing dye
- production
- Prior art date
Links
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- Coloring (AREA)
Description
Verfahren zur Herstellung eines kupferhaltigen Farbstoffes. Gemäss dem im Hauptpatent beschrie benen Verfahren erhält man einen kupfer haltigen Farbstoff, wenn man den .Farbstoff aus diazotierter 4-Aniinoazobenzol-4'-sulfo- säure und 1-D@Iet.hyl-4-amino-2-oxybenzol mit diazotierter 4'-Niti@o-4-aininodiphenylamin-2'- sulfosäure weiter kuppelt und das so erhal tene Produkt mit Verbindungen des zwei wertigen Kupfers behandelt.
Wie nun weiter gefunden wurde, erhält man einen Farbstoff mit ähnlichen Eigen schaften, wenn man 1 Mol 1-Amino-3-oxy- benzol mit 2 Mol diazotierter 4'-Nitro-4-ami- nodiphenylainin-2'-sulfosäure kuppelt und den erhaltenen Azofarbstoff mit Verbindun gen des zweiwertigen Mnpfers behandelt.
<I>Beispiel:</I> 61.8 Teile 4'-Nitro-4-aminodiphenylamin- 2'-sulfosäure werden in der üblichen Weise mit 13,8 Teilen Natriumnitrit diazotiert. Diese Diazoverbindung läuft bei 10 zti einer Lösung von 10,9 Teilen 1-Amino-3-oxybenzol und 33 Teilen Natrinmcarbonat in 1000 Teilen Wasser. Nachdem etwa die Hälfte der Diazoverbindung eingelaufen ist, gibt man den Rest gleichzeitig mit 4 Teilen Na triumhydroxyd in 20 Teilen Wasser zu.
Nach einer Stunde wird die Lösung des Diazo- farbstoffes auf<B>800</B> erwärmt und mit 52 Teilen Kupfersulfat, gelöst in 200 Teilen Wasser, versetzt. Schliesslich erhitzt man noch ilz Stunde bis zum Sieden. Der erhal tene kupferhaltige Farbstoff wird in der üb lichen Weise fertiggestellt, er färbt Leder rotbraun.
Process for the production of a copper-containing dye. According to the process described in the main patent, a copper-containing dye is obtained if the dye is obtained from diazotized 4-aminoazobenzene-4'-sulfonic acid and 1-D@Iet.hyl-4-amino-2-oxybenzene with diazotized 4 '-Niti @ o-4-ainodiphenylamine-2'-sulfonic acid further couples and the product obtained in this way is treated with compounds of divalent copper.
As has now been found further, a dye with similar properties is obtained if 1 mole of 1-amino-3-oxybenzene is coupled with 2 moles of diazotized 4'-nitro-4-aminodiphenylamine-2'-sulfonic acid and the Treated azo dye obtained with compounds of the divalent Mnpfers.
<I> Example: </I> 61.8 parts of 4'-nitro-4-aminodiphenylamine-2'-sulfonic acid are diazotized in the usual way with 13.8 parts of sodium nitrite. This diazo compound runs with 10 parts of a solution of 10.9 parts of 1-amino-3-oxybenzene and 33 parts of sodium carbonate in 1000 parts of water. After about half of the diazo compound has run in, the remainder is added simultaneously with 4 parts of sodium hydroxide in 20 parts of water.
After one hour, the solution of the diazo dye is heated to 800 and 52 parts of copper sulfate dissolved in 200 parts of water are added. Finally, heat it to boiling for another hour. The obtained copper-containing dye is finished in the usual way, it dyes leather red-brown.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE177834X | 1933-05-03 | ||
CH174651T | 1934-12-22 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH177834A true CH177834A (en) | 1935-06-15 |
Family
ID=25719549
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH177834D CH177834A (en) | 1933-05-03 | 1934-03-20 | Process for the production of a copper-containing dye. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH177834A (en) |
-
1934
- 1934-03-20 CH CH177834D patent/CH177834A/en unknown
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