CH205533A - Process for the preparation of an o-oxyazo dye. - Google Patents
Process for the preparation of an o-oxyazo dye.Info
- Publication number
- CH205533A CH205533A CH205533DA CH205533A CH 205533 A CH205533 A CH 205533A CH 205533D A CH205533D A CH 205533DA CH 205533 A CH205533 A CH 205533A
- Authority
- CH
- Switzerland
- Prior art keywords
- dye
- oxyazo
- preparation
- parts
- acetylamino
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 8
- 238000002360 preparation method Methods 0.000 title description 3
- 239000000975 dye Substances 0.000 claims description 8
- 210000002268 wool Anatomy 0.000 claims description 4
- 150000008049 diazo compounds Chemical class 0.000 claims description 3
- 239000000843 powder Substances 0.000 claims description 2
- 239000000987 azo dye Substances 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 claims 1
- 238000007747 plating Methods 0.000 claims 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- 238000004043 dyeing Methods 0.000 description 2
- LPXPTNMVRIOKMN-UHFFFAOYSA-M sodium nitrite Chemical compound [Na+].[O-]N=O LPXPTNMVRIOKMN-UHFFFAOYSA-M 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- LSNNMFCWUKXFEE-UHFFFAOYSA-M Bisulfite Chemical compound OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 125000005843 halogen group Chemical group 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 235000010288 sodium nitrite Nutrition 0.000 description 1
- 238000006467 substitution reaction Methods 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 o-Oxyazofarbstoffes. Es wurde gefunden, dass man zu Farstoffen, die zum Färben von Wolle nach dem Chrom verfahren geeignet sind, gelangt, wenn man dianotiertes 6-Nitro-4-acetylamino-2-amino-l- oxybenzol mit 2-Oxynaphthalin-4-sulfonsäure oder deren Halogensubstitutionsprodukten -kombiniert.
Die Farbstoffe zeichnen sich durch gutes Egalisierungsvermögen aus und ergeben nach dem Chromverfahren auf Wolle Färbungen, die eine sehr gute Lichtechtbeit besitzen.
Gegenstand des vorliegenden Patentes ist ein Verfahren zur Herstellung eines o-Oxyazo- farbstoffes, welches dadurch gekennzeichnet ist, dass man 6-Nitro-4-acetylamino-2-amino- 1-oxybenzol dianotiert und die Diazoverbin- dung mit 2-Oxynaphthalin-4-sulfonsäure kup pelt.
<I>Beispiel:</I> 21,1 Teile 6-Nitro-4-acetylamino-2-amino- 1-oxybenzot werden in 100 Teilen Wasser mit 4 Teilen Natriumhydroxyd gelöst und nach Zusatz von Eis durch Zugabe von 50 Teilen Salzsäure von 12<B>0</B> B6 ausgefällt. Man dianotiert mit 6,9 Teilen Natriumnitrit und lässt die Diazo- verbindung zu einer mit Eis versetzten Lösung von 24 Teilen 2-oxynaphthalin-4-sulfonsaurem Natrium und 15 Teilen Soda in etwa 500 Teilen Wasser zufliessen.
Nach beendeter Kombination wird der Farbstoff in üblicher Weise aufgearbeitet. Er bildet nach dem Trocknen eindunkles Pulver von guter Löslichkeit, welches Wolle nach dem Chromverfahren in blaugrauen Tönen von sehr zuter Lichtechtheit anfärbt.
Process for the preparation of an o-oxyazo dye. It has been found that dyes which are suitable for dyeing wool by the chromium process are obtained when dianotated 6-nitro-4-acetylamino-2-amino-l-oxybenzene with 2-oxynaphthalene-4-sulfonic acid or their halogen substitution products combined.
The dyes are distinguished by their good leveling properties and, after the chrome process, produce dyeings on wool that have very good lightfastness.
The present patent relates to a process for the preparation of an o-oxyazo dye, which is characterized in that 6-nitro-4-acetylamino-2-amino-1-oxybenzene is dianotized and the diazo compound with 2-oxynaphthalene-4 sulfonic acid coupling.
<I> Example: </I> 21.1 parts of 6-nitro-4-acetylamino-2-amino-1-oxybenzot are dissolved in 100 parts of water with 4 parts of sodium hydroxide and, after adding ice, by adding 50 parts of hydrochloric acid 12 <B> 0 </B> B6 failed. It is dianotized with 6.9 parts of sodium nitrite and the diazo compound is allowed to flow into a solution, mixed with ice, of 24 parts of sodium 2-oxynaphthalene-4-sulfonic acid and 15 parts of soda in about 500 parts of water.
When the combination is complete, the dye is worked up in the usual way. After drying it forms a dark powder of good solubility, which uses the chrome process to dye wool in blue-gray shades of very good lightfastness.
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH205533T | 1938-06-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH205533A true CH205533A (en) | 1939-06-30 |
Family
ID=4444661
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH205533D CH205533A (en) | 1938-06-29 | 1938-06-29 | Process for the preparation of an o-oxyazo dye. |
Country Status (1)
| Country | Link |
|---|---|
| CH (1) | CH205533A (en) |
-
1938
- 1938-06-29 CH CH205533D patent/CH205533A/en unknown
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