CH169945A - Process for the preparation of an azo dye. - Google Patents
Process for the preparation of an azo dye.Info
- Publication number
- CH169945A CH169945A CH169945DA CH169945A CH 169945 A CH169945 A CH 169945A CH 169945D A CH169945D A CH 169945DA CH 169945 A CH169945 A CH 169945A
- Authority
- CH
- Switzerland
- Prior art keywords
- bis
- azo dye
- dye
- preparation
- pure
- 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
- 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)
-
- 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
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-oxäthyl)-m-toluidin gekuppelt wird.
Es wurde gefunden, dass man in analoger Weise einen Azofarbstoff von wert vollen Eigenschaften erhält, wenn man di- azotiertes 2.4-Dinitranilin in stark saurer Lösung kuppelt mit 2-Bis-(ss-oxäthyl)-amino- 4-chlor-l-methoxybenzol vom Siedepunkt 217 bis 225 /15 mm.
Der Farbstoff ist ein in Wasser unlös liches, dunkles Pulver, das in Alkohol mit karminer, in konz. Schwefelsäure mit blau. roter Farbe löslich ist und nach dem übli chen Verfahren Acetatseide in reinen, rot stichig violetten Tönen anfärbt. Die Fär bungen zeigen gute Echtheitseigenschaften und sind rein weiss ätzbar. Das neue Produkt ist auch ein gutes Färbemittel für Lecke.
Beispiel: 91,5 Teile 2.4-Dinitranilin werden in bekannter Weise mit einer Nitrosylschwefel- säure, entsprechend 35 Teilen Natriumnitrit, diazotiert. Die Diazoniumlösung wird auf Eis ausgetragen, filtriert und mit<B>133</B> Tei len 2-Bis-(ss-oxäthyl)-amino-4-chlor-l-meth- oxybenzol, 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 Reaktion beschleunigen kann. Das Endprodukt wird auf bekannte Weise isoliert, verpastet oder, nach dem Trocknen bei mässig hoher Temperatur, zu einem Färbepräparat verarbeitet. Es ist ein in Wasser unlösliches, dunkles Pulver, das sich beispielsweise in Alkohol mit karminer, in konz. Schwefelsäure mit blauroter 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 2nd 4-Dinitraniline is coupled with bis (ss-oxäthyl) -m-toluidine.
It has been found that an azo dye of valuable properties is obtained in an analogous manner if diazotized 2,4-dinitraniline is coupled in a strongly acidic solution with 2-bis- (s-oxethyl) -amino-4-chloro-1-methoxybenzene from the boiling point 217 to 225/15 mm.
The dye is a dark powder which is insoluble in water and which is mixed in alcohol with carmine, in conc. Sulfuric acid with blue. red color is soluble and dyes acetate silk in pure, red-tinged purple tones using the usual process. The dyeings show good fastness properties and can be etched in pure white. The new product is also a good stain for leaks.
Example: 91.5 parts of 2,4-dinitraniline are diazotized in a known manner with a nitrosylsulfuric acid, corresponding to 35 parts of sodium nitrite. The diazonium solution is poured onto ice, filtered and with 133 parts of 2-bis- (ss-oxethyl) -amino-4-chloro-1-methoxybenzene, dissolved with the necessary amount of hydrochloric acid 0 to 5 brought to the clutch.
After some time, the formation of the dye is over, 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 coloring preparation. It is a dark powder which is insoluble in water and which can be mixed with carmine in alcohol, in conc. Sulfuric acid dissolves with a blue-red color.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH163895T | 1933-09-01 | ||
CH169945T | 1933-09-01 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH169945A true CH169945A (en) | 1934-06-15 |
Family
ID=25717878
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH169945D CH169945A (en) | 1933-09-01 | 1933-09-01 | Process for the preparation of an azo dye. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH169945A (en) |
-
1933
- 1933-09-01 CH CH169945D patent/CH169945A/en unknown
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