CH128005A - 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
- CH128005A CH128005A CH128005DA CH128005A CH 128005 A CH128005 A CH 128005A CH 128005D A CH128005D A CH 128005DA CH 128005 A CH128005 A CH 128005A
- Authority
- CH
- Switzerland
- Prior art keywords
- azo dye
- copper compound
- preparation
- copper
- substantive
- Prior art date
Links
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- Coloring (AREA)
Description
Verfahren zur Darstellun; der Kupferverbindung eines substantiven Azofarbstoffes. Es wurde gefunden, dass substantive Azo- farbstoffe aus Diazoverbindungen beziehungs weise Diazoazoverbindungen von solchen No- noaminen und ihren Derivaten, die in o-Stellung zur Aminogruppe mindestens eine nicht sub stituierte oder substituierte Alkyloxy-,
Aralkyl- oxy- oder Aryloxygruppe tragen, in wertvolle Kupferverbindungen überführbar sind. Man erhält so sehr lichtechte substantive Azofarb- stoffe in den verschiedensten Farbtönen, die sich durch Alkaliechtheit, sowie Bügelechtheit auszeichnen.
Gegenstand vorliegender Erfindung ist ein Verfahren zur Darstellung der Kupfer verbindung eines substantiven Azofarbstoffes, welches dadurch gekennzeichnet ist, dass man den aus zwei Molekülen der Diazoverbindung aus 2-Aminoanisol und 1 Molekül 5.5'-Dioxy- 2. '-dinaphtylamin-7 . 7'-disulfosäure erhält lichen Azofarbstoff und ein kupferabgebendes Mittel aufeinander einwirken lässt. Die so erhaltene Kupferverbindung zieht am Baum wolle in alkali- und lichtechten rotvioletten Tönen von guter Bügelechtheit.
Beispiel: 780 Gewichtsteile des Azofarbstoffes aus 2 Molekülen 2-Aminoanisol und 1 Molekül 5 . 5'-Dioxy-2 . 2'-dinapbtylamin-7 . 7'-disulfo- säure werden mit 27000 Volumteilen Wasser gelöst. Unter Rühren wird mit Essigsäure schwach sauer gemacht und dann bei 80 mit 280 Gewichtsteilen kristallisiertem Kupfer sulfat in der zehnfachen Menge Wasser ver setzt.
Nach zweistündigem Erwärmen auf 70-80 wird die Ausscheidung der Farbstoff säure eventuell durch Zusatz von Kochsals vervollständigt, der Farbstoff abgepresst und getrocknet. Er zieht auf Baumwolle im Glaubersalz-Sodabad in alkali- und lichtechten rotvioletten Tönen von guter Bügelechtheit.
Method of presentation; the copper compound of a substantive azo dye. It has been found that substantive azo dyes from diazo compounds or diazoazo compounds of those noamines and their derivatives which have at least one unsubstituted or substituted alkyloxy, in the o-position to the amino group
Carry aralkyl oxy or aryloxy groups, can be converted into valuable copper compounds. In this way, very lightfast substantive azo dyes are obtained in a wide variety of shades, which are distinguished by their fastness to alkali and ironing.
The present invention relates to a process for the preparation of the copper compound of a substantive azo dye, which is characterized in that the two molecules of the diazo compound from 2-aminoanisole and 1 molecule of 5.5'-dioxy-2.'-dinaphthylamine-7. 7'-disulfonic acid and a copper-releasing agent can act on one another. The copper compound obtained in this way pulls on cotton in alkali and lightfast red-violet tones that are easy to iron.
Example: 780 parts by weight of the azo dye from 2 molecules of 2-aminoanisole and 1 molecule of 5. 5'-dioxy-2. 2'-dinapbtylamine-7. 7'-disulfonic acid is dissolved in 27,000 parts by volume of water. While stirring, the mixture is made slightly acidic with acetic acid and then at 80 with 280 parts by weight of crystallized copper sulfate in ten times the amount of water.
After two hours of warming to 70-80, the excretion of the dyestuff acid is possibly completed by adding Kochsals, the dyestuff is squeezed out and dried. It pulls on cotton in a Glauber's salt soda bath in alkali and lightfast red-violet tones that are easy to iron.
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE128005X | 1926-04-19 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH128005A true CH128005A (en) | 1928-10-01 |
Family
ID=5662343
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH128005D CH128005A (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) | CH128005A (en) |
-
1927
- 1927-03-29 CH CH128005D patent/CH128005A/en unknown
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