CH159317A - 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
- CH159317A CH159317A CH159317DA CH159317A CH 159317 A CH159317 A CH 159317A CH 159317D A CH159317D A CH 159317DA CH 159317 A CH159317 A CH 159317A
- Authority
- CH
- Switzerland
- Prior art keywords
- preparation
- water
- azo dye
- insoluble azo
- dye
- Prior art date
Links
Landscapes
- Coloring (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
Description
Verfahren zur Darstellung eines wasserunlöslichen Azofarl)stoü'es. Gegenstand des vorliegenden Zusatzpa tentes ist ein Verfahren zur Darstellung eines wasserunlöslichen Azofarbstoffes, welches da durch gekennzeichnet ist, dass man die Di- azoverbindung von 1-Amino-2-eblor-5-trifluor- methylbenzol mit 2'.3'-Oxynaphtoyl-l-amino- 2-äthoxybenzol kuppelt. Die Einwirkung der beiden Komponenten aufeinander kann auch in Gegenwart eines Substrates erfolgen.
Der in Substanz hergestellte Farbstoff bildet ein orangefarbenes Pulver und liefert, wenn auf der Faser erzeugt, ein lebhaftes Orange von sehr guter Licht- und Waschechtheit.
<I>Beispiel:</I> Zu einer in der üblichen Weise aus 19,6 Gewichtsteilen 1-Amino-2-chlor-;')-trifluorme- thylbenzol bereiteten Diazolösung fliesst lang sam unter gutem Rühren eine natronalka- lische Lösung von 30,7 Gewichtsteilen 2'.3'- Oxyrraphtoyl-l-amino-2-äthoxyberrzol, welche mit der zur Bindung der überschüssigen Mi neralsäure nötigen Menge Natriumacetat ver- setzt ist.
Nach Beendigung der Farbstoff bildung wird abfiltriert, gut mit Wasser gewaschen und getrocknet. Die Darstellung des Farbstoffes kann auch in Gegenwart eines Substrates erfolgen. Wird der Farbstoff auf der Faser erzeugt, so erhält man ein lebhaftes Orange von sehr guter Licht- und Waschechtheit.
Process for the preparation of a water-insoluble Azofarl stool. The subject of the present Zusatzpa tentes is a process for the preparation of a water-insoluble azo dye, which is characterized by the fact that the di-azo compound of 1-amino-2-eblor-5-trifluoromethylbenzene with 2'.3'-oxynaphtoyl-l -amino- 2-ethoxybenzene 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 orange with very good lightfastness and washfastness.
<I> Example: </I> To a diazo solution prepared in the usual way from 19.6 parts by weight of 1-amino-2-chloro -; ') - trifluoromethylbenzene, a sodium-alkaline solution of 30 slowly flows with thorough stirring , 7 parts by weight of 2'.3'-oxyrraphtoyl-1-amino-2-ethoxyberrzol, which is offset with the amount of sodium acetate necessary to bind the excess mineral acid.
When the dye has formed, it is filtered off, washed well with water and dried. The preparation of the dye can also take place in the presence of a substrate. If the dye is produced on the fiber, a vivid orange of very good lightfastness and washfastness is obtained.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE159317X | 1930-10-10 | ||
CH155781T | 1931-10-08 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH159317A true CH159317A (en) | 1932-12-31 |
Family
ID=25716645
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH159317D CH159317A (en) | 1930-10-10 | 1931-10-08 | Process for the preparation of a water-insoluble azo dye. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH159317A (en) |
-
1931
- 1931-10-08 CH CH159317D patent/CH159317A/en unknown
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