CH162912A - Process for the preparation of a water-insoluble azo dye. - Google Patents
Process for the preparation of a water-insoluble azo dye.Info
- Publication number
- CH162912A CH162912A CH162912DA CH162912A CH 162912 A CH162912 A CH 162912A CH 162912D A CH162912D A CH 162912DA CH 162912 A CH162912 A CH 162912A
- Authority
- CH
- Switzerland
- Prior art keywords
- water
- preparation
- insoluble azo
- azo dye
- dye
- Prior art date
Links
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- Coloring (AREA)
Description
Verfahren zur Darstellung eines wasserunlöslichen Äzofarbstoffes. Gegenstand des vorliegenden Zusatzpa tentes ist ein Verfahren zur Darstellung eines wasserunlöslichen Azofarbstoffes, welches da durch gekennzeichnet ist, dass man die Diazo- verbindung von 1-Amino-3.5-bistrifluormethyl- benzol mit 2'.3'-Oxynaphtoyl-l-amino-3-riitro- benzol kuppelt. Die Einwirkung der beiden Komponenten aufeinander kann auch in Ge genwart eines Substrates erfolgen.
Der in Substanz hergestellte Farbstoff bildet ein orangefarbenes Pulver und liefert, wenn auf der Faser erzeugt, ein lebhaftes Goldgelb von sehr guter Licht- und Wasch echtheit. <I>Beispiel:</I> Zu einer in der üblichen Weise aus 22,9 Gewichtsteilen 1-Amino-3.5-bistrifluormethyl- benzol bereiteten Diazolösung fliesst langsam unter gutem Rühren eine natronalkalische Lösung von 30,8 Gewichtsteilen 2'.3'-Oxy- naphtoyl-l-amino-3-nitrobenzol, welche mit der zur Bindung der überschüssigen Mineral säure nötigen Menge Natriumacetat versetzt ist.
Nach Beendigung der Farbstoffbildung wird abfiltriert, gut mit Wasser gewaschen und getrocknet. Die Darstellung des Farb stoffes kann auch in. Gegenwart eines Sub strates erfolgen. Wird der- Farbstoff auf der Faser erzeugt, so erhält man ein lebhaftes Goldgelb von sehr guter Licht und Wasch echtheit.
Process for the preparation of a water-insoluble azo dye. The subject of the present additional patent is a process for the preparation of a water-insoluble azo dye, which is characterized in that the diazo compound of 1-amino-3,5-bistrifluoromethylbenzene with 2'.3'-oxynaphtoyl-1-amino-3 -riitro- benzene couples. The two components can also act on one another in the presence of a substrate.
The dye, which is produced in substance, forms an orange-colored powder and, when produced on the fiber, provides a vivid golden yellow with very good light and wash fastness. <I> Example: </I> To a diazo solution prepared in the usual way from 22.9 parts by weight of 1-amino-3,5-bistrifluoromethylbenzene, an alkaline sodium solution of 30.8 parts by weight of 2'.3'- flows slowly with thorough stirring. Oxynaphtoyl-1-amino-3-nitrobenzene, which is mixed with the amount of sodium acetate necessary to bind the excess mineral acid.
After the formation of the dye has ended, it is filtered off, washed well with water and dried. The representation of the dye can also take place in the presence of a substrate. If the dye is generated on the fiber, a vivid golden yellow of very good light and wash fastness is obtained.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE162912X | 1930-10-10 | ||
CH155781T | 1931-10-08 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH162912A true CH162912A (en) | 1933-07-15 |
Family
ID=25716655
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH162912D CH162912A (en) | 1930-10-10 | 1931-10-08 | Process for the preparation of a water-insoluble azo dye. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH162912A (en) |
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1931
- 1931-10-08 CH CH162912D patent/CH162912A/en unknown
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