CH179326A - Process for the preparation of an azo dye. - Google Patents
Process for the preparation of an azo dye.Info
- Publication number
- CH179326A CH179326A CH179326DA CH179326A CH 179326 A CH179326 A CH 179326A CH 179326D A CH179326D A CH 179326DA CH 179326 A CH179326 A CH 179326A
- Authority
- CH
- Switzerland
- Prior art keywords
- preparation
- dye
- new
- azo dye
- naphthylamine
- 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
- C09B29/095—Amino naphthalenes
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Coloring (AREA)
Description
Zusatzpatent zum Hauptpatent<B>Nu. 175355.</B> Verfahren zur Darstellung eines Azofarbstoffes. Es wurde gefunden, dass man einen neuen Azofarbstoff von wertvollen Eigenschaften erhält durch Kupplung von diazotiertem 0-Brom-2.4-dinitroanilin mit Igono-ss,y-dioxy- propyl-a-naphthylamin, erhalten durch Kon densation von a-Naphthylamin mit, a-Chlor- ss,y-dioxypropan.
Der neue Farbstoff ist ein in Wasser un lösliches dunkles Pulver, das in Aceton mit blauer, und in konzentrierter Schwefelsäure mit roter Farbe löslich ist und nach dem übliehen Verfahren Acetatseide in schönen blauen Tönen anfärbt. Die Färbungen ze-i- .c'"en gute Echtheitseigensehaften und sind <B>en</B> rein weiss ätzbar. Das neue Produkt ist auch ein -,utes Färbemittel für Lacke.
n <I>Beispiel:</I> <B>131</B> Teile 6-Brom-2. 4-dinitro-anilin wer den in bekannter Weise mit einer Nitrosyl- schweff--#lsäure, entsprechend<B>35</B> Teilen Na- triumnitrit diazotiert. Die Diazoniumlösuno- wird filtriert und mit<B>108,5</B> Teilen ss,y-Di- oxypropyl-a-naphthylamin, gelöst in<B>100</B> Tei len konzentrierter Salzsäure und 4000 Teilen Eiswasser, bei<B>0</B> bis<B>5 '</B> zur Kupplung ge bracht.
Nach einiger Zeit ist die Farbstoff- bildung beendet; man kann sie durch<B>Ab-</B> stumpfen der stark sauren Reaktion be schleunigen. Der ausgeschiedene Farbstoff wird in bekannter Weise aufgearbeitet, ver- pastet, oder, naell dem Trocknen bei mässig hoher Temperatur, zu einem Färbepräparat verarbeitet.
Additional patent to the main patent <B> Nu. 175355. Process for the preparation of an azo dye. It has been found that a new azo dye with valuable properties is obtained by coupling diazotized 0-bromo-2,4-dinitroaniline with Igono-ss, y-dioxy-propyl-a-naphthylamine, obtained by condensation of a-naphthylamine with, a -Chlor- ss, y-dioxypropane.
The new dye is a dark powder which is insoluble in water and which is soluble in acetone with a blue color and in concentrated sulfuric acid with a red color and dyes acetate silk in beautiful blue tones using the usual method. The dyeings ze-i- .c '"en good fastness properties and are <B> en </B> pure white etchable. The new product is also a -, utes colorant for lacquers.
n <I> Example: </I> <B> 131 </B> parts 6-bromo-2. 4-dinitro-aniline is diazotized in a known manner with a nitrosylsulfuric acid, corresponding to 35 parts of sodium nitrite. The diazonium solution is filtered and mixed with 108.5 parts of ss, y-dioxypropyl-a-naphthylamine dissolved in 100 parts of concentrated hydrochloric acid and 4000 parts of ice water <B> 0 </B> to <B> 5 '</B> brought to the coupling.
After a while, the formation of the dye has ended; it can be accelerated by <B> dulling </B> the strongly acidic reaction. The precipitated dye is worked up, pasted or, after drying at a moderately high temperature, processed into a dye preparation in a known manner.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH179326T | 1934-04-07 | ||
CH175355T | 1934-04-07 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH179326A true CH179326A (en) | 1935-08-31 |
Family
ID=25719672
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH179326D CH179326A (en) | 1934-04-07 | 1934-04-07 | Process for the preparation of an azo dye. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH179326A (en) |
-
1934
- 1934-04-07 CH CH179326D patent/CH179326A/en unknown
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