CH233091A - Process for the preparation of a chromable monoazo dye. - Google Patents
Process for the preparation of a chromable monoazo dye.Info
- Publication number
- CH233091A CH233091A CH233091DA CH233091A CH 233091 A CH233091 A CH 233091A CH 233091D A CH233091D A CH 233091DA CH 233091 A CH233091 A CH 233091A
- Authority
- CH
- Switzerland
- Prior art keywords
- chromable
- preparation
- dye
- monoazo dye
- orange
- 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 3Zonoazofarbstoffes. 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-Amino- 4-cyclohexylphenol-6-sulfonsäure mit 1-Phe- nyl-3-methyl-5-pyrazolon kuppelt.
Der neue Farbstoff stellt ein braunrotes Pulver dar, dessen Lösung in Wasser orange, in Schwefelsäure gelborange gefärbt ist. Er färbt Wolle -beim Behandeln mit Chromsal zen in gelbstichig roten Tönen. Beispiel: 27,1 Teile 2-Amino-4-cyclohexylphenol-6- sulfonsäure (aus 4-Cyclohexylphenol durch Sulfonierung, NTitrierung 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 braunrotes Pulver er halten, das sich in Wasser mit oranger, in konzentrierter Schwefelsäure mit gelboranger Farbe löst.
Aus saurem Bade zieht er auf Wolle beim Nachchromieren in gelbstichig roten Tönen mit guten Nass- und Lichtecht- heiten. Färbungen mit den gleichen Eigen schaften werden auch direkt nach dem Ein- badchromierverfahren erhalten.
Process for the preparation of an honorable 3-zone azo 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 and including 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-amino-4-cyclohexylphenol-6-sulfonic acid is coupled with 1-phenyl-3-methyl-5-pyrazolone.
The new dye is a brown-red powder, the solution of which is orange in water and yellow-orange in sulfuric acid. It dyes wool in yellowish red tones when treated with chromium salts. Example: 27.1 parts of 2-amino-4-cyclohexylphenol-6-sulfonic acid (made from 4-cyclohexylphenol by sulfonation, Titration and reduction is) are diazotized indirectly in the usual manner. The diazonium compound is coupled with 17,
9 parts of 1-phenyl-3-methyl-5-pyrazolone in soda-alkaline solution: After the dye has formed, the dye is salted out, filtered off and dried. It is obtained as a brownish-red powder that dissolves in water with an orange color and in concentrated sulfuric acid with a yellow-orange color.
From an acidic bath, it pulls on wool when it is re-chromed in yellowish red tones with good wet and light fastness properties. Colorations with the same properties are also obtained directly after the single chrome plating process.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH233091T | 1942-05-16 | ||
CH230906T | 1942-05-16 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH233091A true CH233091A (en) | 1944-06-30 |
Family
ID=25727516
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH233091D CH233091A (en) | 1942-05-16 | 1942-05-16 | Process for the preparation of a chromable monoazo dye. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH233091A (en) |
-
1942
- 1942-05-16 CH CH233091D patent/CH233091A/en unknown
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