CH128916A - Process for the preparation of the copper compound of a substantive azo dye. - Google Patents
Process for the preparation of the copper compound of a substantive azo dye.Info
- Publication number
- CH128916A CH128916A CH128916DA CH128916A CH 128916 A CH128916 A CH 128916A CH 128916D A CH128916D A CH 128916DA CH 128916 A CH128916 A CH 128916A
- Authority
- CH
- Switzerland
- Prior art keywords
- azo dye
- preparation
- copper compound
- substantive azo
- copper
- Prior art date
Links
Landscapes
- Coloring (AREA)
Description
Verfahren zur Darstellung der Kupferverbindung eines substantiven Azofarbstoffes. Es wurde gefunden, dass der substantive Azofarbstoff, wie er aus zwei Molekülen der Diazoverbindung aus 2-Aminophenoxyessig- säure und einem Molekül 5. 5'-Dioxy-2. 2'- dinaphtylamin - 7.
7' - disulfosäure erhalten werden kann, in eine Kupferverbindung über geführt wird, wenn man auf denselben ein kupferabgebendes Mittel einwirken läss't. Der erhaltene kupferhaltige Farbstoff zieht auf Baumwolle in lichtechten violetten Tö nen.
<I>Beispiel</I> 909 Gewichtsteile des Azofarbstoffes aus 2 Molekülen 2-Aminophenoxyessigsäure und 1 Molekül 5.5'-Dioxy-2.2'-dinaphtylamin- 7. 7'-disulfosäure werden in 20,000 Volum- teilen Wasser gelöst, mit Essigsäure deut lich sauer gemacht und bei<B>80'</B> unter Rüh ren mit 800 Gewichtsteilen Kupfersulfat (krist.) in der zehnfachen Menge Wasser ver setzt.
Nach einstündigem Erwärmen wird die Abscheidung der Farbstoffsäure eventuell durch Zusatz von Kochsalz vervollständigt, abgepresst und getrocknet. Der Farbstoff zieht aus dem Glaubersalz-Sodabad auf Baumwolle in lichtechten violetten Tönen.
Process for the preparation of the copper compound of a substantive azo dye. It has been found that the substantive azo dye, as it is composed of two molecules of the diazo compound from 2-aminophenoxyacetic acid and one molecule of 5. 5'-dioxy-2. 2'-dinaphthylamine - 7.
7'-disulfonic acid can be obtained, is converted into a copper compound if a copper-releasing agent is allowed to act on the same. The copper-containing dye obtained pulls on cotton in lightfast violet tones.
<I> Example </I> 909 parts by weight of the azo dye from 2 molecules of 2-aminophenoxyacetic acid and 1 molecule of 5.5'-dioxy-2.2'-dinaphthylamine-7. 7'-disulfonic acid are dissolved in 20,000 parts by volume of water, with acetic acid clearly made acidic and added at <B> 80 '</B> while stirring with 800 parts by weight of copper sulfate (crystalline) in ten times the amount of water.
After one hour of heating, the deposition of the dyestuff acid is possibly completed by adding sodium chloride, pressed off and dried. The dye draws from the Glauber's salt soda bath on cotton in lightfast purple tones.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE128916X | 1926-04-19 | ||
CH128005T | 1927-03-29 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH128916A true CH128916A (en) | 1928-11-16 |
Family
ID=25711005
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH128916D CH128916A (en) | 1926-04-19 | 1927-03-29 | Process for the preparation of the copper compound of a substantive azo dye. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH128916A (en) |
-
1927
- 1927-03-29 CH CH128916D patent/CH128916A/en unknown
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