CH162914A - 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
- CH162914A CH162914A CH162914DA CH162914A CH 162914 A CH162914 A CH 162914A CH 162914D A CH162914D A CH 162914DA CH 162914 A CH162914 A CH 162914A
- Authority
- CH
- Switzerland
- Prior art keywords
- water
- preparation
- azo dye
- insoluble azo
- amino
- Prior art date
Links
Landscapes
- Coloring (AREA)
Description
Verfahren mir DarstellInng eines wasserunlöslichen Azofarbstoffes. Gegenstand des vorliegenden Zusatzpaten tes ist ein Verfahren zur Darstellung eines wasserunlöslichen Azofarbstoffes, welches da durch gekennzeichnet ist, dass man die Diazo- verbindung von 1-Amino-2.5-bistrifluormethyl- benzol mit 2'. 3'-Oxynaphtoyl-l-amino-4-chlor- benzol kuppelt. Die Einwirkung der beiden Komponenten aufeinander kann auch in Ge genwart eines Sabstrates erfolgen.
Der in Substanz hergestellte Farbstoff bildet ein orangefarbenes Pulver und liefert, wenn auf der Faser erzeugt, ein Orangegelb von guten Echtheitseigenschaften.
<I>Beispiel:</I> Zu einer in der üblichen Weise aus<B>22,9</B> Gewichtsteilen 1-Amino-2.5-bistriffnormethyl- benzol bereiteten Diazolösung fliesst langsam unter gutem Rühren eine natronalkalische Lö sung von<B>29,8</B> Gewichtsteilen 2'. S'- Oxynaph- toyl-l-amino-4-ohlorbenzol, welche mit der zur Bindung der überschüssigen Mineralsäure nötigen Menge Natriumacetat versetzt ist. Nach Beendigung der Farbstoffbildung wird abfiltriert, gut mit Wasser gewaschen und ge trocknet.
Die Darstellung des Farbstoffes kann auch in Gegenwart eineä Substrates erfolgen. Wird der Farbstoff auf der Faser erzeugt, so erhält man ein Orangegelb von guten Echt heitseigenschaften.
Method with 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-2,5-bistrifluoromethylbenzene is 2 '. 3'-Oxynaphtoyl-1-amino-4-chlorobenzene couples. The action of the two components on each other can also take place in the presence of a Sabstrat.
The dye produced in substance forms an orange-colored powder and, when produced on the fiber, provides an orange-yellow with good fastness properties.
<I> Example: </I> To a diazo solution prepared in the usual way from <B> 22.9 </B> parts by weight of 1-amino-2,5-bis-triffnormethylbenzene, a sodium-alkaline solution of <B slowly flows with thorough stirring > 29.8 </B> parts by weight 2 '. S'-oxynaphthoyl-l-amino-4-chlorobenzene, 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 dye can also be prepared in the presence of a substrate. If the dye is generated on the fiber, an orange-yellow with good authenticity properties is obtained.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE162914X | 1930-10-10 | ||
CH155781T | 1931-10-08 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH162914A true CH162914A (en) | 1933-07-15 |
Family
ID=25716657
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH162914D CH162914A (en) | 1930-10-10 | 1931-10-08 | Process for the preparation of a water-insoluble azo dye. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH162914A (en) |
-
1931
- 1931-10-08 CH CH162914D patent/CH162914A/en unknown
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