CH253883A - Process for the preparation of an azo dye of the pyrazolone series. - Google Patents
Process for the preparation of an azo dye of the pyrazolone series.Info
- Publication number
- CH253883A CH253883A CH253883DA CH253883A CH 253883 A CH253883 A CH 253883A CH 253883D A CH253883D A CH 253883DA CH 253883 A CH253883 A CH 253883A
- Authority
- CH
- Switzerland
- Prior art keywords
- mole
- pyrazolone
- amino
- methyl
- dye
- 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
- C09B33/00—Disazo and polyazo dyes of the types A->K<-B, A->B->K<-C, or the like, prepared by diazotising and coupling
- C09B33/18—Trisazo or higher polyazo dyes
- C09B33/22—Trisazo dyes of the type A->B->K<-C
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Coloring (AREA)
Description
Zusatzpatent zum Hauptpatent Nr. 248805. Verfahren zur Herstellung eines Azofarbstoffes der Pyrazolonreihe. Gegenstand vorliegenden Patentes ist ein Verfahren zur Herstellung eines Azofarb- stoffes der Pyrazolonreihe. Das Verfahren ist.
dadurch gekennzeichnet, dass man 1 Mol 1 l. )iazo-6-nitro-2-oxy-naphthälin-4-sulfonsäure, 1 1M1 des diazotierten Aminoazofarbstoffes:
\? - Amino - 5 -sulfo-benzoesäure >. 1- (4'- Amino-phenyl)-3-methyl-5-pyrazolon, 2 Mol 1- (4'- Amino -phenyl) - 3 -methyl-5-pyrazolon und 1 Mol Phosgen derart aufeinander ein wirken lässt, dass ein Trisazofarbstoff der Formel
EMI0001.0025
entsteht. 1)er neue,
metallisierbare Trisazofarbstoff stellt ein dunkles Pulver dar, das sich in Wassu r mit. braunora.nger und in konzentrierter Schwefelsäure mit oranger Farbe löst und Cellulosefasern aus dem neutralen Glauber- salzbad in braunorangen Tönen färbt, welche durch Nachbehandlung mit Kupfersulfat in ein reines, rotstichiges Orange von sehr guter Nass- und Lichtechtheit übergehen.
Beispiel: 28,4 Teile diazotierte 1-Amino-6-nitro-2- oxy - nal)hthalin - 4 - sulfonsäure werden mit 10A 'feilen Harnstoff aus 1 - (4' - Amino- phenyl)-3-methyl-5-pyrazolon und Phosgen bei Eiskühlung in Gegenwart von überschüs siger Soda zum einseitigen Kupplungsprodukt vereinigt,
die überschüssige Soda mit Salz säure abgestumpft und in bicarbonatischem illedium die Zwischenverbindung mit der Diazoniumverbindung aus 41,7 Teilen Amino- azofarbstoff, erhalten aus diazotierter 2- Amino-5-sulfobenzoesäure mit 1-(4'-Amino- phenyl)-3-methyl-5-pyrazolon, weitergekup pelt.
Zu demselben Farbstoff gelangt man, wenn man 1 Hol des Aminoazofarbstoffes, erhalten durch Kupplung von diazotierter 1-Amino-6- nitro - 2 - oxy - naphthalin-4-sulf onsäure mit 1- (4'-Amino-phenyl)-3-methyl-5-pyrazolon, und 1 lUol des Aminoazofarbstoffes, erhalten durch Kupplung des dia.zotierten Aminoazo- farbstoffes:
2 - Amino - 5 -sulfo -benzoesäure 1- (4' - Amino - phenyl) - 3 - methyl- 5- pyrazolon mit 1-(4'-Amino-phenyl)-3-methyl- 5-pyrazolon, mit Phosgen in sodaalkalischem Medium bis zum Verschwinden der freien Aminogruppen zum asymmetrischen Harn stoff kondensiert.
Additional patent to main patent No. 248805. Process for the production of an azo dye of the pyrazolone series. The present patent relates to a process for the production of an azo dye of the pyrazolone series. The procedure is.
characterized in that 1 mol 1 l. ) iazo-6-nitro-2-oxy-naphthalen-4-sulfonic acid, 1 1M1 of the diazotized aminoazo dye:
\? - Amino - 5-sulfo-benzoic acid>. 1- (4'-Aminophenyl) -3-methyl-5-pyrazolone, 2 moles of 1- (4'-Aminophenyl) -3-methyl-5-pyrazolone and 1 mole of phosgene can act on one another in such a way that a trisazo dye of the formula
EMI0001.0025
arises. 1) he new,
metallizable trisazo dye is a dark powder that dissolves in water with. Brown-orange and dissolves in concentrated sulfuric acid with an orange color and dyes cellulose fibers from the neutral Glauber's salt bath in brown-orange tones, which after treatment with copper sulfate turn into a pure, red-tinged orange with very good wet and lightfastness.
Example: 28.4 parts of diazotized 1-amino-6-nitro-2-oxy - nal) hthalene - 4 - sulfonic acid are converted from 1 - (4 '- aminophenyl) -3-methyl-5- with 10A' of urea. pyrazolone and phosgene combined with ice cooling in the presence of excess soda to form the one-sided coupling product,
the excess soda was truncated with hydrochloric acid and the intermediate compound with the diazonium compound from 41.7 parts of amino azo dye obtained from diazotized 2-amino-5-sulfobenzoic acid with 1- (4'-aminophenyl) -3-methyl in bicarbonate illedium -5-pyrazolone, further coupled.
The same dye is obtained if 1 pint of the aminoazo dye, obtained by coupling diazotized 1-amino-6-nitro-2-oxy-naphthalene-4-sulfonic acid with 1- (4'-aminophenyl) -3- methyl-5-pyrazolone, and 1 lUol of the aminoazo dye, obtained by coupling the dia.zotierten aminoazo dye:
2 - Amino - 5 -sulfo -benzoic acid 1- (4 '- Amino - phenyl) - 3 - methyl- 5-pyrazolone with 1- (4'-Amino-phenyl) -3-methyl-5-pyrazolone, with phosgene in soda-alkaline medium condenses to the asymmetric urea until the free amino groups disappear.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH253883T | 1945-12-27 | ||
CH248805T | 1945-12-27 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH253883A true CH253883A (en) | 1948-03-31 |
Family
ID=25729301
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH253883D CH253883A (en) | 1945-12-27 | 1945-12-27 | Process for the preparation of an azo dye of the pyrazolone series. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH253883A (en) |
-
1945
- 1945-12-27 CH CH253883D patent/CH253883A/en unknown
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