CH266026A - Process for the preparation of a monoazo dye. - Google Patents
Process for the preparation of a monoazo dye.Info
- Publication number
- CH266026A CH266026A CH266026DA CH266026A CH 266026 A CH266026 A CH 266026A CH 266026D A CH266026D A CH 266026DA CH 266026 A CH266026 A CH 266026A
- Authority
- CH
- Switzerland
- Prior art keywords
- dye
- violet
- wool
- dissolves
- acid
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 5
- NYGZLYXAPMMJTE-UHFFFAOYSA-M metanil yellow Chemical group [Na+].[O-]S(=O)(=O)C1=CC=CC(N=NC=2C=CC(NC=3C=CC=CC=3)=CC=2)=C1 NYGZLYXAPMMJTE-UHFFFAOYSA-M 0.000 title claims description 4
- 239000000975 dye Substances 0.000 claims description 11
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 9
- 210000002268 wool Anatomy 0.000 claims description 5
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 4
- 244000172533 Viola sororia Species 0.000 claims description 4
- 238000004043 dyeing Methods 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- UZBQIPPOMKBLAS-UHFFFAOYSA-N diethylazanide Chemical compound CC[N-]CC UZBQIPPOMKBLAS-UHFFFAOYSA-N 0.000 claims description 3
- 235000011121 sodium hydroxide Nutrition 0.000 claims description 3
- 244000154870 Viola adunca Species 0.000 claims description 2
- 235000005811 Viola adunca Nutrition 0.000 claims description 2
- 235000013487 Viola odorata Nutrition 0.000 claims description 2
- 235000002254 Viola papilionacea Nutrition 0.000 claims description 2
- 239000002253 acid Substances 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 238000004382 potting Methods 0.000 claims description 2
- 239000000843 powder Substances 0.000 claims description 2
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 125000000664 diazo group Chemical group [N-]=[N+]=[*] 0.000 description 2
- 230000002378 acidificating effect Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 150000008044 alkali metal hydroxides Chemical class 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000006193 diazotization reaction Methods 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 235000015149 toffees Nutrition 0.000 description 1
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 Herstellung eines Monoazofarbetoffee. Es wurde gefunden, dass ein wertvoller Monoazofarbstoff hergestellt werden kann, wenn man diazotierte 4-Chlor-2-amino-l-oxy- benzol-6-sulfonsäure mit 2-Oxynaphthalin-6- sulfonsäure-diäthylamid vereinigt.
Der neue Farbstoff stellt ein violettschwarz gefärbtes Pulver dar, das sich in Wasser mit violetter, in verdünnter Natronlauge und in konz. Schwefelsäure mit roter Farbe löst. Der Farbstoff färbt Wolle aus saurem Bade in braunen Tönen, die durch Nachchromieren in ein blaues Violett. von sehr guter Licht-, Walk und Pottingechtheit übergeführt werden. Der Farbstoff eignet sich vorzüglich zum Färben von Wolle nach dem Einbadchromierverfah- ren, wobei ebenfalls sehr echte violette Fär bungen erhalten werden.
Die Diazotierung der 4-Chlor-2-amino-l- oxybenzol-6-sulfonsäure kann in üblicher, an sich bekannter Weise vorgenommen werden. Die Kupplung erfolgt vorzugsweise in alkali schem Medium., z. B. so, dass man der Diazo- lösung so viel Alkali zufügt, bis sie auf Kongo papier keine saure Reaktion mehr anzeigt und sie hierauf mit einer Lösung vereinigt, die aus der Kupplungskomponente in Wasser mit Al- kalihydroxy d hergestellt wurde.
Beispiel: 22,3 Teile 4-Chlor-2-amino-l-oxybenzol-6- sulfonsäure werden in bekannter Weise diazo- tiert und die neutralisierte Diazolösung mit einer Lösung, bestehend aus 29,3 Teilen 2- Oxy-naphthalin-6-sulfonsäure-diäthylamid, 10 Teilen Natriumhy droxyd und 250 Teilen Was ser, bei 30 C vereinigt.
Nach beendeter Kupp- hmg wird der erhaltene Farbstoff durch Zu satz von Natriumchlorid vollständig abge schieden, abfiltriert und getrocknet.
Process for the production of a monoazo color toffee. It has been found that a valuable monoazo dye can be produced by combining diazotized 4-chloro-2-amino-1-oxybenzene-6-sulfonic acid with 2-oxynaphthalene-6-sulfonic acid diethylamide.
The new dye is a violet-black colored powder that dissolves in water with violet, in dilute caustic soda and in conc. Sulfuric acid dissolves with red color. The dye dyes wool from an acid bath in brown tones, which after chroming turns it into a blue violet. of very good light, milled and potting fastness. The dye is particularly suitable for dyeing wool by the single bath chroming process, which also gives very real violet dyeings.
The diazotization of 4-chloro-2-amino-l-oxybenzene-6-sulfonic acid can be carried out in a conventional manner known per se. The coupling is preferably carried out in an alkaline medium. For example, so much alkali is added to the diazo solution until it no longer shows an acidic reaction on Congo paper and it is then combined with a solution made from the coupling component in water with alkali metal hydroxide.
Example: 22.3 parts of 4-chloro-2-amino-1-oxybenzene-6-sulfonic acid are diazotized in a known manner and the neutralized diazo solution with a solution consisting of 29.3 parts of 2- oxynaphthalene-6- sulfonic acid diethylamide, 10 parts of sodium hydroxide and 250 parts of water, combined at 30 C.
After coupling has ended, the dye obtained is completely separated off by adding sodium chloride, filtered off and dried.
Claims (1)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH261363T | 1946-07-15 | ||
| CH266026T | 1946-07-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH266026A true CH266026A (en) | 1949-12-31 |
Family
ID=25730437
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH266026D CH266026A (en) | 1946-07-15 | 1946-07-15 | Process for the preparation of a monoazo dye. |
Country Status (1)
| Country | Link |
|---|---|
| CH (1) | CH266026A (en) |
-
1946
- 1946-07-15 CH CH266026D patent/CH266026A/en unknown
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