CH177836A - Process for the production of a copper-containing dye. - Google Patents
Process for the production of a copper-containing dye.Info
- Publication number
- CH177836A CH177836A CH177836DA CH177836A CH 177836 A CH177836 A CH 177836A CH 177836D A CH177836D A CH 177836DA CH 177836 A CH177836 A CH 177836A
- Authority
- CH
- Switzerland
- Prior art keywords
- copper
- dye
- containing dye
- production
- parts
- Prior art date
Links
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- Coloring (AREA)
Description
Verfahren zur Herstellung eines kupferhaltigen Farbstoffes. Gemäss dem im Hauptpatent beschriebe nen Verfahren erhält man einen kupferhalti gen Farbstoff, wenn man den Farbstoff aus dianotierter 4-Amittoazobenzol-4'-srtlfosäure und 1-Methyl-4-amino-2-oxybenzol mit diano tierter 4'-Nitro-4-aminodiphenylamin-2'-sulfo- säure weiter kuppelt und das so erhaltene Produkt mit Verbindungen des zweiwertigen Kupfers behandelt.
Wie nun weiter gefunden wurde, erhält man einen ähnlichen Farbstoff, wenn man 1 Mol 4-Amino-2-oxy-l-methylbenzol mit 2 11Zol dianotierter 4'-Nitro-4-aminodiphenyl- amin-2'-sulfosäure kuppelt und den erhalte- 11611 Farbstoff mit Verbindungen des zwei wertigen Kupfers behandelt.
<I>Beispiel:</I> 61,8 Teile 4'-Nitro-4-aminodiphenylamin- 2'-sulfosäure werden in der üblichen Weise mit 13,8 Teilen Natriumnitrit dianotiert. Diese Diazoverbindung läuft bei<B>100</B> zu einer Lö sung von 12,3 Teilen 4-Amino-2-oxy-1- methylbenzol und 33 Teilen Natriumkarbonat in<B>1000</B> Teilen Wasser. Nachdem etwa die Hälfte der Diazoverbindung eingelaufen ist, gibt man den Rest gleichzeitig mit 4 Teilen Natriumhydroxyd in 20 Teilen Wasser zu.
Nach einer Stunde wird die Lösung des Disazofarbstoffes auf<B>801</B> erwärmt und mit 52 Teilen Kupfersulfat, gelöst in 200 Teilen Wasser, versetzt. Schliesslich erhitzt man noch 2 Stunden bis zum Sieden. Der erhaltene kupferhaltige Farbstoff wird in der üblichen 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 made from dianotated 4-amitoazobenzene-4'-srtlfosäure and 1-methyl-4-amino-2-oxybenzene with diano-tated 4'-nitro-4- aminodiphenylamine-2'-sulfonic acid is further coupled and the product thus obtained is treated with compounds of divalent copper.
As has now been further found, a similar dye is obtained if 1 mol of 4-amino-2-oxy-1-methylbenzene is coupled with 2 11Zol of dianotized 4'-nitro-4-aminodiphenylamine-2'-sulfonic acid and this is obtained - 11611 dye treated with compounds of the bivalent copper.
<I> Example: </I> 61.8 parts of 4'-nitro-4-aminodiphenylamine-2'-sulfonic acid are dianotized in the usual manner with 13.8 parts of sodium nitrite. At 100, this diazo compound results in a solution of 12.3 parts of 4-amino-2-oxy-1-methylbenzene 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 disazo dye is heated to 801 and 52 parts of copper sulfate, dissolved in 200 parts of water, are added. Finally, the mixture is heated to boiling for another 2 hours. The copper-containing dye obtained is finished in the usual way, it dyes leather red-brown.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE177836X | 1933-05-03 | ||
CH174651T | 1934-12-22 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH177836A true CH177836A (en) | 1935-06-15 |
Family
ID=25719551
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH177836D CH177836A (en) | 1933-05-03 | 1934-03-20 | Process for the production of a copper-containing dye. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH177836A (en) |
-
1934
- 1934-03-20 CH CH177836D patent/CH177836A/en unknown
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