CH266023A - Process for the preparation of a monoazo dye. - Google Patents
Process for the preparation of a monoazo dye.Info
- Publication number
- CH266023A CH266023A CH266023DA CH266023A CH 266023 A CH266023 A CH 266023A CH 266023D A CH266023D A CH 266023DA CH 266023 A CH266023 A CH 266023A
- Authority
- CH
- Switzerland
- Prior art keywords
- dye
- violet
- dissolves
- chrome plating
- 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
- 238000002360 preparation method Methods 0.000 title description 2
- 239000000975 dye Substances 0.000 claims description 12
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 9
- 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
- 210000002268 wool Anatomy 0.000 claims description 4
- 238000007747 plating Methods 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
- 239000000843 powder Substances 0.000 claims description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 claims 1
- 238000004382 potting Methods 0.000 claims 1
- 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
- 230000002378 acidificating effect Effects 0.000 description 2
- 125000000664 diazo group Chemical group [N-]=[N+]=[*] 0.000 description 2
- 235000011121 sodium hydroxide Nutrition 0.000 description 2
- 239000003513 alkali Substances 0.000 description 1
- 150000008044 alkali metal hydroxides Chemical class 0.000 description 1
- 150000003931 anilides 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
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 Monoazofarbstoffes. 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-anilid 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 Pottingeehtheit übergeführt wer den. Der Farbstoff eignet sich vorzüglich zum Färben von Wolle nach dem Einbadchromier- verfahren, wobei ebenfalls sehr echte violette Färbungen 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.
<I>Beispiel:</I> 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 31,4 Teilen 2 Oxynaphthalin-6-sulforisäure-anilid, 10 Teilen Natriumhydroxyd und 250 Teilen Wasser bei 30 C vereinigt. Nach beendeter Kupplung wird der erhaltene Farbstoff durch Zusatz von Na triumchlorid vollständig abgeschieden, abfil- triert und getrocknet.
Process for the preparation of a monoazo dye. It has been found that a valuable monoazo dye can be prepared if diazotized 4-chloro-2-amino-1-oxybenzene-6-sulfonic acid is combined with 2-oxynaphthalene-6-sulfonic acid anilide.
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 acidic bath in brown tones, which are converted into a blue violet with very good light, milled and potty integrity by re-chrome plating. The dye is particularly suitable for dyeing wool using 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 such. 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 that was prepared from the coupling component in water with alkali metal hydroxide.
<I> Example: </I> 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 31.4 parts of 2 Oxynaphthalene-6-sulforic acid anilide, 10 parts of sodium hydroxide and 250 parts of water are combined at 30.degree. After the 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 | ||
| CH266023T | 1946-07-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH266023A true CH266023A (en) | 1949-12-31 |
Family
ID=25730434
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH266023D CH266023A (en) | 1946-07-15 | 1946-07-15 | Process for the preparation of a monoazo dye. |
Country Status (1)
| Country | Link |
|---|---|
| CH (1) | CH266023A (en) |
-
1946
- 1946-07-15 CH CH266023D patent/CH266023A/en unknown
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