CH162908A - 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
- CH162908A CH162908A CH162908DA CH162908A CH 162908 A CH162908 A CH 162908A CH 162908D A CH162908D A CH 162908DA CH 162908 A CH162908 A CH 162908A
- Authority
- CH
- Switzerland
- Prior art keywords
- preparation
- water
- azo dye
- insoluble azo
- dye
- Prior art date
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- Coloring (AREA)
Description
Verfahren zur Darstellung eines wasserunlösliehen Azofarbstoffes. Gegenstand des vorliegenden Zusatzpa tentes ist ein Verfahren zur Darstellung bines wasserunlöslichen,Azofarbstoffes, welches da-, durch gekennzeichnet ist, dass man die Diazo- verbindung von 1-Amino-3.5-bistriflLiormethyl- benzol mit 2. 3'-Oxynaphthoyl <B>- 1 -</B> amino-2- methoxybenzol 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 Wasch echtheit.
<I>Beispiel:</I> Zu einer in der üblichen Weise aus<B>22,9</B> Gewichtsteilen 1-Amino-3.5-bistrifluormethyl- benzol bereiteten Diazolbsung fliesst langsam unter gutem Rühren eine natronalkalisebe Lösung von<B>29,5</B> Gewichtsteilen 2'.3'-Oxy- naphtoyl-l-amino-2-methoxybenzol, welche mit der zur Bindung der überschüssigen Mineralsäure nötigen Menge Natriumacetat versetzt ist. Nach Beendigung der Farbstoff- bildung wird abfiltriert, gut mit Wasser ge waschen Lind 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 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-bistriflLiormethylbenzene with 2,3'-oxynaphthoyl <B> - 1 - amino-2-methoxybenzene 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 lively orange with very good light and wash fastness.
<I> Example: </I> To a diazole solution prepared in the usual way from <B> 22.9 </B> parts by weight of 1-amino-3,5-bistrifluoromethylbenzene, a sodium-alkaline solution of <B> slowly flows with thorough stirring 29.5 parts by weight of 2'.3'-oxynaphtoyl-1-amino-2-methoxybenzene, to which the amount of sodium acetate necessary to bind the excess mineral acid is added. When the dye has formed, it is filtered off, washed well with water and dried. The.
The dye can also be prepared in the presence of a substrate. If the dye is produced on the fiber, a vivid orange with very good lightfastness and washfastness is obtained.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE162908X | 1930-10-10 | ||
CH155781T | 1931-10-08 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH162908A true CH162908A (en) | 1933-07-15 |
Family
ID=25716651
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH162908D CH162908A (en) | 1930-10-10 | 1931-10-08 | Process for the preparation of a water-insoluble azo dye. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH162908A (en) |
-
1931
- 1931-10-08 CH CH162908D patent/CH162908A/en unknown
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