CH169946A - Process for the preparation of an azo dye. - Google Patents
Process for the preparation of an azo dye.Info
- Publication number
- CH169946A CH169946A CH169946DA CH169946A CH 169946 A CH169946 A CH 169946A CH 169946D A CH169946D A CH 169946DA CH 169946 A CH169946 A CH 169946A
- Authority
- CH
- Switzerland
- Prior art keywords
- azo dye
- dye
- preparation
- bluish
- red
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
- C09B29/00—Monoazo dyes prepared by diazotising and coupling
- C09B29/06—Monoazo dyes prepared by diazotising and coupling from coupling components containing amino as the only directing group
- C09B29/08—Amino benzenes
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
- C09B29/00—Monoazo dyes prepared by diazotising and coupling
- C09B29/06—Monoazo dyes prepared by diazotising and coupling from coupling components containing amino as the only directing group
- C09B29/08—Amino benzenes
- C09B29/0805—Amino benzenes free of acid groups
- C09B29/0807—Amino benzenes free of acid groups characterised by the amino group
- C09B29/0809—Amino benzenes free of acid groups characterised by the amino group substituted amino group
- C09B29/0811—Amino benzenes free of acid groups characterised by the amino group substituted amino group further substituted alkylamino, alkenylamino, alkynylamino, cycloalkylamino aralkylamino or arylamino
- C09B29/0813—Amino benzenes free of acid groups characterised by the amino group substituted amino group further substituted alkylamino, alkenylamino, alkynylamino, cycloalkylamino aralkylamino or arylamino substituted by OH, O-C(=X)-R, O-C(=X)-X-R, O-R (X being O,S,NR; R being hydrocarbonyl)
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Coloring (AREA)
Description
Zusatzpatent zum Hauptpatent Nr. 163895. Verfahren zur Darstellung eines Azofarbstoffes. Im Hauptpatent ist ein Verfahren zur Darstellung eines Azofarbstoffes beschrieben, bei welchem diazotiertes 2. 4 - Dinitranilin mit Bis-(ss-ogäthyl)-m-toluidin gekuppelt wird.
Es wurde gefunden, dass man in analoger Weise einen Azofarbstoff von wert vollen Eigenschaften erhält, wenn man di- azotiertes 2-Chlor-4-nitranilin in stark saurer Lösung kuppelt mit Bis-(ss-ogäthyl)-anilin.
Der Farbstoff ist ein in Wasser unlös liches, dunkelbraunes Pulver, das in Alkohol mit gelbstichig roter, in konz. Schwefelsäure mit blaustichig roter Farbe löslich ist und nach dem üblichen Verfahren Acetatseide in schönen, blaustichig roten Tönen anfärbt. Die Färbungen zeigen gute Echtheitseigen schaften und sind rein weiss ätzbar. Das neue Produkt ist auch ein gutes Färbemittel für Lacke.
Beispiel: 86 Teile 2-Chlor-4-nitranilin werden in bekannter Weise mit 35 Teilen Natrium- nitrit und 240 Teilen konz. Schwefelsäure in verdünnter Lösung diazotiert. Die Di- azoniumlösung wird nach dem Mären mit 90,5 Teilen Bis-(ss-ogäthyl)-anilin,
mit der nötigen Menge Salzsäure gelöst, bei 0 bis 5 zur Kupplung gebracht. Nach einiger Zeit ist die Farbstoffbildung beendet, die man durch Abstumpfen der stark sauren Re aktion beschleunigen kann. Das Endprodukt wird auf bekannte Weise isoliert, verpastet oder, nach dem Trocknen bei mässig hoher Temperatur, zu einem Färbepräparat ver arbeitet.
Es ist ein in Wasser unlösliches, dunkelbraunes Pulver, das sich beispiels weise in Alkohol mit gelbstichig roter, in konz. Schwefelsäure mit blaustichig roter Farbe löst.
Additional patent to main patent no. 163895. Process for the preparation of an azo dye. The main patent describes a process for the preparation of an azo dye in which diazotized 2,4-dinitraniline is coupled with bis- (s-ogäthyl) -m-toluidine.
It has been found that an azo dye with valuable properties is obtained in an analogous manner if diazotized 2-chloro-4-nitroaniline is coupled in a strongly acidic solution with bis- (ss-ogäthyl) aniline.
The dye is a water-insoluble, dark brown powder, which in alcohol with yellowish red, in conc. Sulfuric acid is soluble with a bluish red color and dyes acetate silk in beautiful, bluish red tones using the usual method. The dyeings show good fastness properties and can be etched in pure white. The new product is also a good colorant for paints.
Example: 86 parts of 2-chloro-4-nitraniline are concentrated in a known manner with 35 parts of sodium nitrite and 240 parts. Sulfuric acid diazotized in dilute solution. The diazonium solution is mixed with 90.5 parts of bis (ss-ogäthyl) aniline,
dissolved with the necessary amount of hydrochloric acid, brought to the coupling at 0 to 5. After some time, the dye formation is complete, which can be accelerated by dulling the strongly acidic reaction. The end product is isolated in a known manner, pasted or, after drying at a moderately high temperature, processed into a dye preparation.
It is a water-insoluble, dark brown powder, which, for example, in alcohol with a yellowish red, in conc. Sulfuric acid with a bluish red color.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH163895T | 1933-09-01 | ||
CH169946T | 1933-09-01 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH169946A true CH169946A (en) | 1934-06-15 |
Family
ID=25717879
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH169946D CH169946A (en) | 1933-09-01 | 1933-09-01 | Process for the preparation of an azo dye. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH169946A (en) |
-
1933
- 1933-09-01 CH CH169946D patent/CH169946A/en unknown
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