CH233095A - Process for the preparation of a chromable monoazo dye. - Google Patents
Process for the preparation of a chromable monoazo dye.Info
- Publication number
- CH233095A CH233095A CH233095DA CH233095A CH 233095 A CH233095 A CH 233095A CH 233095D A CH233095D A CH 233095DA CH 233095 A CH233095 A CH 233095A
- Authority
- CH
- Switzerland
- Prior art keywords
- chromable
- preparation
- dye
- orange
- monoazo 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
- C09B45/00—Complex metal compounds of azo dyes
- C09B45/02—Preparation from dyes containing in o-position a hydroxy group and in o'-position hydroxy, alkoxy, carboxyl, amino or keto groups
- C09B45/14—Monoazo compounds
- C09B45/16—Monoazo compounds containing chromium
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Coloring (AREA)
Description
Verfahren zur Darstellung eines ehromierbaren 3lonoazofarbstoffes. Es wurde gefunden, dass man wertvolle, chromierbare Monoazofarbstoffe erhält, wenn man diazotierte 2-Aminophenol-6-sulfonsäu- ren, die in 4-Stellung einen Cycloalkylrest oder einen Alkylrest von 3 bis und mit 8 Kohlenstoffatomen enthalten,
mit Pyrazolo- nen ohne freie Sulfon- und Carbonsäuregrup- pen kuppelt.
Gegenstand vorliegenden Zusatzpatentes ist ein Verfahren zur Herstellung eines chro- mierbaren Monoazofarbstoffes, dadurch ge kennzeichnet, dass man diazotierte 2-Amino4 4-diisobutylphenol-6-sulfonsäure mit 1-Phe- nyl-3-methyl-5-pyrazolon kuppelt.
Der neue Farbstoff stellt ein rotes Pulver dar, dessen Lösung in Wasser orange, in Schwefelsäure orange gefärbt ist. Er färbt Wolle beim Behandeln mit Chromsalzen in gelbstichig roten Tönen.
<I>Beispiel:</I> 30,3 Teile 2-Amino-4-diisobutylphenol-6- sulfonsäure (aus 4-Diisobutylphenol durch Sulfonierung, Nitrierung und Reduktion dar gestellt) werden in üblicher Weise indirekt diazotiert. Die Diazoniumverbindung kuppelt man mit 17,9 Teilen 1-Phenyl-3-methyl-5- pyrazolon in sodaalkalischer Lösung.
Nach Beendigung der Farbstoffbildung -wird der Farbstoff ausgesalzen, abfiltriert und ge trocknet. Er wird als rotes Pulver erhalten, das sich in Wasser mit oranger, in konzen trierter Schwefelsäure mit oranger Farbe löst. Aus saurem Bade zieht er auf Wolle beim Nachchromieren in gelbstichig roten Tönen mit guten Nass- und Lichtechtheiten. Färbungen mit den gleichen Eigenschaften werden auch direkt nach dem Einbadchro- mierverf ahren erhalten.
Process for the preparation of an honorable 3lonoazo dye. It has been found that valuable, chromable monoazo dyes are obtained if diazotized 2-aminophenol-6-sulfonic acids which contain a cycloalkyl radical or an alkyl radical of 3 to 8 carbon atoms in the 4-position,
couples with pyrazolones without free sulfonic and carboxylic acid groups.
The subject of the present additional patent is a process for the production of a chromable monoazo dye, characterized in that diazotized 2-amino4-diisobutylphenol-6-sulfonic acid is coupled with 1-phenyl-3-methyl-5-pyrazolone.
The new dye is a red powder, the solution of which is orange in water and orange in sulfuric acid. It dyes wool in yellowish red tones when treated with chromium salts.
<I> Example: </I> 30.3 parts of 2-amino-4-diisobutylphenol-6-sulfonic acid (prepared from 4-diisobutylphenol by sulfonation, nitration and reduction) are diazotized indirectly in the customary manner. The diazonium compound is coupled with 17.9 parts of 1-phenyl-3-methyl-5-pyrazolone in a soda-alkaline solution.
When the dye has formed, the dye is salted out, filtered off and dried. It is obtained as a red powder that dissolves in water with orange, in concentrated sulfuric acid with orange color. From an acidic bath, he pulls on wool when re-chroming in yellowish red tones with good wet and light fastness properties. Dyeings with the same properties are also obtained directly by the single bath chromating process.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH230906T | 1942-05-16 | ||
CH233095T | 1942-05-16 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH233095A true CH233095A (en) | 1944-06-30 |
Family
ID=25727520
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH233095D CH233095A (en) | 1942-05-16 | 1942-05-16 | Process for the preparation of a chromable monoazo dye. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH233095A (en) |
-
1942
- 1942-05-16 CH CH233095D patent/CH233095A/en unknown
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