CH169698A - Process for the preparation of a chromium-containing azo dye. - Google Patents
Process for the preparation of a chromium-containing azo dye.Info
- Publication number
- CH169698A CH169698A CH169698DA CH169698A CH 169698 A CH169698 A CH 169698A CH 169698D A CH169698D A CH 169698DA CH 169698 A CH169698 A CH 169698A
- Authority
- CH
- Switzerland
- Prior art keywords
- chromium
- azo dye
- oxynaphthalene
- preparation
- containing azo
- Prior art date
Links
- 239000000987 azo dye Substances 0.000 title claims description 12
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 title claims description 9
- 229910052804 chromium Inorganic materials 0.000 title claims description 9
- 239000011651 chromium Substances 0.000 title claims description 9
- 238000000034 method Methods 0.000 title claims description 3
- 238000002360 preparation method Methods 0.000 title description 2
- 239000000975 dye Substances 0.000 claims description 5
- 239000002253 acid Substances 0.000 claims description 3
- 239000003513 alkali Substances 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 239000000843 powder Substances 0.000 claims description 2
- 210000002268 wool Anatomy 0.000 claims description 2
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- WGLPBDUCMAPZCE-UHFFFAOYSA-N Trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 description 2
- 229910000423 chromium oxide Inorganic materials 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- QDOXWKRWXJOMAK-UHFFFAOYSA-N dichromium trioxide Chemical compound O=[Cr]O[Cr]=O QDOXWKRWXJOMAK-UHFFFAOYSA-N 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 1
- VQWFNAGFNGABOH-UHFFFAOYSA-K chromium(iii) hydroxide Chemical compound [OH-].[OH-].[OH-].[Cr+3] VQWFNAGFNGABOH-UHFFFAOYSA-K 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 150000008049 diazo compounds Chemical class 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 235000010755 mineral Nutrition 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 235000002639 sodium chloride Nutrition 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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 chromhaltigen Azofarbstoffes. Es wurde gefunden, dass man einen chrom haltigen Azofarbstoff herstellen kann, wenn man den Azofarbstoff aus diazotierter 1-Ami- no-2-oxynaphtlialin-4-sulfonsäure und 2-Oxy- naphthalin mit solchen Mengen Alkalichromit- lösungen behandelt, die auf die chromierbare Gruppe des Azofarbstoffes weniger als ein Atom Chrom enthalten.
Der erhaltene chromhaltige Azofarbstoff stellt ein leicht wasserlösliches, violettschwar- zes Pulver dar, das aus saurem Bade Wolle in marineblauen Tönen von vorzüglichen Echt- heiten färbt.
Beispieg <I>;</I> In 400 Teilen 30 % iger Natronlauge löst man bei<B>60-700</B> unter gutem Rühren 203 Teile kalt gefällte, frische Chromhydroxyd- paste zu 15% Cr2O3,
fügt gleich nachher 204 Teile des Azofarbstoffes aus diazotierter 1-Amino-2=oxynaphthalin-4-sulfonsäure und 2-Oxynaphthalin als etwa 40 % ige Paste zu und erwärmt 7-8 Stunden auf<B>75-78.</B> Die schwärzlichblaue Schmelze wird mit Wasser auf etwa 1500 Teile verdünnt,
vorsichtig mit 10 % iger Mineralsäure neutralisiert, mit etwas Essigsäure schwach angesäuert, von Verun reinigungen abfiltriert und der neue chrom- haltige Farbstoff mit Kochsalz ausgesalzen.
Zu demselben Farbstoffe gelangt man, wenn die Herstellung des chromierbaren Azo- farbstoffes und die Behandlung mit den alka lischen Chromoxydlösungen in einer Stufe vollzogen wird; dies kann dadurch geschehen, dass die Kupplung der Diazoverbindung mit der Kupplungskomponente in Gegenwart der alkalischen Chromoxydlösungen vorgenommen und daran anschliessend die Chromierung des erhaltenen chromierbaren Azofarbstoffes ohne dessen Abscheidung durch Erwärmen zu Ende geführt wird.
Process for the preparation of a chromium-containing azo dye. It has been found that a chromium-containing azo dye can be produced if the azo dye is treated from diazotized 1-amino-2-oxynaphthalen-4-sulfonic acid and 2-oxynaphthalene with such amounts of alkali chromite solutions that affect the chromable Group of the azo dye contain less than one atom of chromium.
The chromium-containing azo dye obtained is a readily water-soluble, violet-black powder which, from acid bath, dyes wool in navy blue shades with excellent fastness properties.
Example <I>; </I> In 400 parts of 30% sodium hydroxide solution, <B> 60-700 </B> dissolves 203 parts of cold-precipitated, fresh chromium hydroxide paste containing 15% Cr2O3 with thorough stirring,
Immediately afterwards add 204 parts of the azo dye made from diazotized 1-amino-2-oxynaphthalene-4-sulfonic acid and 2-oxynaphthalene as an approximately 40% paste and heats to 75-78 hours for 7-8 hours blackish blue melt is diluted with water to about 1500 parts,
Carefully neutralized with 10% mineral acid, slightly acidified with a little acetic acid, filtered off impurities and salted out the new chromium-containing dye with common salt.
The same dye is obtained if the production of the chromable azo dye and the treatment with the alkaline chromium oxide solutions are carried out in one step; this can be done by coupling the diazo compound with the coupling component in the presence of the alkaline chromium oxide solutions and then completing the chromation of the chromable azo dye obtained without its deposition by heating.
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH169698T | 1933-04-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH169698A true CH169698A (en) | 1934-06-15 |
Family
ID=4421750
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH169698D CH169698A (en) | 1933-04-21 | 1933-04-21 | Process for the preparation of a chromium-containing azo dye. |
Country Status (1)
| Country | Link |
|---|---|
| CH (1) | CH169698A (en) |
-
1933
- 1933-04-21 CH CH169698D patent/CH169698A/en unknown
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CH169698A (en) | Process for the preparation of a chromium-containing azo dye. | |
| DE600101C (en) | Process for the production of water-insoluble azo dyes | |
| DE565824C (en) | Process for the production of chromium-containing azo dyes | |
| DE659840C (en) | Process for the production of azo dyes | |
| DE617949C (en) | Process for the production of chromium-containing azo dyes | |
| DE615477C (en) | Process for the production of chromium-containing azo dyes | |
| DE547823C (en) | Process for the preparation of azo dyes | |
| CH172368A (en) | Process for the production of a new dye. | |
| CH228845A (en) | Process for the preparation of a tetrakisazo dye. | |
| CH169693A (en) | Process for the preparation of a chromium-containing azo dye. | |
| CH287103A (en) | Process for the preparation of a chromium-containing azo dye. | |
| CH302388A (en) | Process for the preparation of a chromium-containing azo dye. | |
| CH302385A (en) | Process for the preparation of a chromium-containing azo dye. | |
| CH292659A (en) | Process for the preparation of a metal-containing azo dye. | |
| CH303280A (en) | Process for the production of a cobalt-containing azo dye. | |
| CH287102A (en) | Process for the preparation of a chromium-containing azo dye. | |
| CH180407A (en) | Process for the preparation of a chromium-containing azo dye. | |
| CH302386A (en) | Process for the preparation of a chromium-containing azo dye. | |
| CH199369A (en) | Process for the preparation of an azo dye. | |
| CH287113A (en) | Process for the preparation of a chromium-containing azo dye. | |
| CH287105A (en) | Process for the preparation of a chromium-containing azo dye. | |
| CH303664A (en) | Process for the preparation of a metal-containing azo dye. | |
| CH172598A (en) | Process for the preparation of a chromium-containing azo dye. | |
| CH119124A (en) | Process for the production of a new dye. | |
| CH228846A (en) | Process for the preparation of a tetrakisazo dye. |