CH238623A - Process for the production of a new azo dye. - Google Patents
Process for the production of a new azo dye.Info
- Publication number
- CH238623A CH238623A CH238623DA CH238623A CH 238623 A CH238623 A CH 238623A CH 238623D A CH238623D A CH 238623DA CH 238623 A CH238623 A CH 238623A
- Authority
- CH
- Switzerland
- Prior art keywords
- production
- azo dye
- new azo
- dye
- parts
- 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)
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Coloring (AREA)
Description
Zusatzpatent zum Hauptpatent Nr. 236997. Verfahren zur Herstellung eines neuen Azofarbstoffes. Es wurde gefunden, dass man einen neuen Azofarbstoff erhält, wenn man die Diazover- bind'ung des 3,5-Dinitroaminobenzols mit dem sauren Maleinsäure-(phenyl-methyl-amino)- äthylester vereinigt.
Der so erhaltene Farbstoff bildet in trockenem Zustande ein rotes Pulver, das sieh in heissem Wasser mit roter Farbe löst und das Acetatkunsts-eide aus wässeriger Lösung in echten gelben Tönen färbt.
Beispiel: 18,3 Teile 3,5-Dinitroaminobenzol werden in 150 Teilen 30%iger Salzsäure durch Er wärmen gelöst. Man kühlt diese Lösung durch Zugabe von Eis und versetzt dann diese kalte Suspension unter Rühren mit einer Lösung von 7 Teilen Natriumnitrit in etwa 25 Teilen Wasser.
Man bereitet nun eine Lösung von 26,6 Tei len des Ammoniumsalzes des sauren Malein- säure - (phenyl - methyl - amino) - äthylesters (dargestellt durch Zusammenschmelzen von 15,1 Teilen Xethyl-ogäthyl-aminobenzol und 9,8 Teilen Maleinsäureanhydrid bei 80-90 und Neutralisieren mit Ammoniak). Diese ;
Lösung versetzt man mit der Diazolösung und führt die Farbstoffbildung durch Zugabe von etwa 200 Teilen Natriumacetat zu Ende. Man filtriert dien Farbstoff ab und wäscht ihn neutral. Der Farbstoff wird nun in etwa i 200 Teilen Wasser angerührt und mit der nötigen Menge Ammoniak in das Ammonium salz übergeführt, gegebenenfalls nach Zusatz von Natriumchlorid abfiltriert, gewaschen und getrocknet.
Additional patent to main patent No. 236997. Process for the production of a new azo dye. It has been found that a new azo dye is obtained if the diazo compound of 3,5-dinitroaminobenzene is combined with the acidic maleic acid (phenylmethylamino) ethyl ester.
The dye thus obtained forms a red powder when dry, which dissolves in hot water with a red color and colors the acetate artificial silk from aqueous solution in true yellow tones.
Example: 18.3 parts of 3,5-dinitroaminobenzene are dissolved in 150 parts of 30% hydrochloric acid by heating. This solution is cooled by adding ice, and a solution of 7 parts of sodium nitrite in about 25 parts of water is then added to this cold suspension, while stirring.
A solution of 26.6 parts of the ammonium salt of the acidic maleic acid (phenyl-methyl-amino) -ethyl ester is now prepared (represented by melting together 15.1 parts of xethyl-ogäthyl-aminobenzene and 9.8 parts of maleic anhydride at 80 -90 and neutralizing with ammonia). These ;
The solution is mixed with the diazo solution and the dye formation is completed by adding about 200 parts of sodium acetate. The dye is filtered off and washed neutral. The dyestuff is then stirred in about i 200 parts of water and converted into the ammonium salt with the necessary amount of ammonia, filtered off, washed and dried, if necessary after the addition of sodium chloride.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH238623T | 1942-08-10 | ||
CH236997T | 1942-08-10 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH238623A true CH238623A (en) | 1945-07-31 |
Family
ID=25728214
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH238623D CH238623A (en) | 1942-08-10 | 1942-08-10 | Process for the production of a new azo dye. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH238623A (en) |
-
1942
- 1942-08-10 CH CH238623D patent/CH238623A/en unknown
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CH238623A (en) | Process for the production of a new azo dye. | |
CH238625A (en) | Process for the production of a new azo dye. | |
CH238626A (en) | Process for the production of a new azo dye. | |
CH238624A (en) | Process for the production of a new azo dye. | |
CH237130A (en) | Process for the production of a new azo dye. | |
CH211819A (en) | Process for the preparation of an azo dye. | |
CH236997A (en) | Process for the production of a new azo dye. | |
CH165415A (en) | Process for the production of a new azo dye. | |
CH211821A (en) | Process for the preparation of an azo dye. | |
CH165039A (en) | Process for the production of a new azo dye. | |
CH211822A (en) | Process for the preparation of an azo dye. | |
CH116734A (en) | Process for the production of a new dye. | |
CH261836A (en) | Process for the preparation of a monoazo dye. | |
CH211804A (en) | Process for the preparation of an azo dye. | |
CH292301A (en) | Process for the preparation of a monoazo dye of the pyrazolone series. | |
CH292298A (en) | Process for the preparation of a monoazo dye of the pyrazolone series. | |
CH174519A (en) | Process for the production of a new azo dye. | |
CH259325A (en) | Process for the preparation of an azo dye. | |
CH242998A (en) | Process for the preparation of a copper-compatible polyazo dye. | |
CH211803A (en) | Process for the preparation of an azo dye. | |
CH211833A (en) | Process for the preparation of an azo dye. | |
CH230207A (en) | Process for the preparation of a trisazo dye. | |
CH307175A (en) | Process for the production of a copperable azo dye. | |
CH117275A (en) | Process for the production of a new dye. | |
CH261368A (en) | Process for the preparation of a monoazo dye. |