CH214817A - Process for the preparation of an azo dye. - Google Patents
Process for the preparation of an azo dye.Info
- Publication number
- CH214817A CH214817A CH214817DA CH214817A CH 214817 A CH214817 A CH 214817A CH 214817D A CH214817D A CH 214817DA CH 214817 A CH214817 A CH 214817A
- Authority
- CH
- Switzerland
- Prior art keywords
- amino
- azo dye
- nitro
- sulfonic acid
- preparation
- Prior art date
Links
- 239000000987 azo dye Substances 0.000 title claims description 6
- 238000000034 method Methods 0.000 title claims description 4
- 239000000975 dye Substances 0.000 claims description 9
- 210000002268 wool Anatomy 0.000 claims description 5
- 150000008049 diazo compounds Chemical class 0.000 claims description 4
- 150000001845 chromium compounds Chemical class 0.000 claims description 3
- 239000010985 leather Substances 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 2
- 239000003086 colorant Substances 0.000 claims 1
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- VMHLLURERBWHNL-UHFFFAOYSA-M Sodium acetate Chemical compound [Na+].CC([O-])=O VMHLLURERBWHNL-UHFFFAOYSA-M 0.000 description 1
- WGLPBDUCMAPZCE-UHFFFAOYSA-N Trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 229910000423 chromium oxide Inorganic materials 0.000 description 1
- QOWZHEWZFLTYQP-UHFFFAOYSA-K chromium(3+);triformate Chemical compound [Cr+3].[O-]C=O.[O-]C=O.[O-]C=O QOWZHEWZFLTYQP-UHFFFAOYSA-K 0.000 description 1
- 230000000802 nitrating effect Effects 0.000 description 1
- 239000001632 sodium acetate Substances 0.000 description 1
- 235000017281 sodium acetate Nutrition 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid Substances OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 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 Azofarbstoffes. Gegenstand des Hauptpatentes ist ein Verfahren zur Herstellung eines neuen Azo- farbstoffes, bei dem man die Diazoverbin- dung von 2-Amino-4,6-dinitro-l-oxybenzol mit 1-Amino- 7 -nitro- 8 -oxynaphthalin-4-sul- fonsäure kuppelt.
Es wurde nun gefunden, dass man einen neuen, ebenfalls wertvollen Azofarbstoff er hält, wenn man die Diazoverbindung der 4 Nitro-2-amino-l-ogybenzol-6-sulfonsäure mit 1-Amino- 7 -nitro- 8 -oxynaphthalin-4-sulf on- säure vereinigt.
Der neue Farbstoff färbt Wolle aus sau rem Bade in blauroten Tönen, die beim Nach- chromieren auf der Faser in olivgrün über gehen. Die in Substanz hergestellte komplexe Chromverbindung färbt Wolle und Leder in sehr echten grünen Tönen.
<I>Beispiel:</I> Man versetzt 284 Teile 1-Amino-7-nitro- 8-oxynaphthalin-4-sulfonsäure, die durch Ni- trieren der 1-Amino-8-oxynaphthalin-4-sul-, fonsäure in konzentrierter Schwefelsäure er halten wird, mit 120 Teilen 34,5 % iger Na tronlauge, die man zunächst mit Wasser ver dünnt, gibt die in bekannter Weise herge stellte Diazoverbindung aus 284 Teilen 4- Nitro-2-amino-l-oaybenzol-6-sulfonsäure zu,
lässt eine Lösung von 272 Teilen kristallisier tem Natriumacetat zulaufen und darauf lang sam eine Lösung von 212 Teilen wasserfreiem Natriumcarbonat. Nach mehreren Stunden ist der Farbstoff entstanden; er wird in üb licher Weise ausgesalzen. Er färbt Wolle in blauroten Tönen, die durch Nachchromieren auf der Faser in olivgrün übergehen.
Zur Herstellung der Chromverbindung kocht man den entstandenen Azofarbstoff 21/2 Stunden lang mit einer Chromformiat-- lösung, die 80 Teilen Chromoxyd entspricht, unter Rückfluss und dampft dann zur Trockne. Der chromhaltige Farbstoff färbt Wolle, Chrom- und Glaceleder in dunkelgrünen, wasch- und säureechten Tönen.
Process for the preparation of an azo dye. The main patent relates to a process for the preparation of a new azo dye, in which the diazo compound of 2-amino-4,6-dinitro-1-oxybenzene with 1-amino-7-nitro-8 -oxynaphthalene-4- sulphonic acid couples.
It has now been found that a new, also valuable azo dye is obtained if the diazo compound of 4-nitro-2-amino-1-ogybenzene-6-sulfonic acid with 1-amino-7-nitro-8 -oxynaphthalene-4- sulfonic acid combined.
The new dye dyes wool from acidic baths in blue-red tones that change to olive-green when the fibers are chromed. The complex chromium compound produced in substance dyes wool and leather in very real green tones.
<I> Example: </I> 284 parts of 1-amino-7-nitro-8-oxynaphthalene-4-sulfonic acid are added, which are obtained by nitrating 1-amino-8-oxynaphthalene-4-sulfonic acid in concentrated sulfuric acid is kept, with 120 parts of 34.5% sodium hydroxide solution, which is first diluted with water ver, gives the diazo compound Herge made in a known manner from 284 parts of 4- nitro-2-amino-l-oaybenzene-6- sulfonic acid too,
lets run a solution of 272 parts of crystallized sodium acetate and then slowly sam a solution of 212 parts of anhydrous sodium carbonate. The dye has formed after several hours; it is salted out in the usual way. It dyes wool in blue-red tones, which change to olive-green when the fibers are chrome-plated.
To produce the chromium compound, the azo dye formed is refluxed for 21/2 hours with a chromium formate solution that corresponds to 80 parts of chromium oxide and then evaporated to dryness. The chromium-containing dye dyes wool, chrome and glazed leather in dark green, washable and acid-fast tones.
Claims (1)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE214817X | 1938-07-21 | ||
| CH212420T | 1939-06-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH214817A true CH214817A (en) | 1941-05-15 |
Family
ID=25725254
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH214817D CH214817A (en) | 1938-07-21 | 1939-06-14 | Process for the preparation of an azo dye. |
Country Status (1)
| Country | Link |
|---|---|
| CH (1) | CH214817A (en) |
-
1939
- 1939-06-14 CH CH214817D patent/CH214817A/en unknown
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