CH180273A - Process for preparing a coloring reaction product obtained from a trisazo dye. - Google Patents
Process for preparing a coloring reaction product obtained from a trisazo dye.Info
- Publication number
- CH180273A CH180273A CH180273DA CH180273A CH 180273 A CH180273 A CH 180273A CH 180273D A CH180273D A CH 180273DA CH 180273 A CH180273 A CH 180273A
- Authority
- CH
- Switzerland
- Prior art keywords
- azo
- product obtained
- reaction product
- nitro
- dye
- Prior art date
Links
- 239000007795 chemical reaction product Substances 0.000 title claims description 3
- 238000004040 coloring Methods 0.000 title claims description 3
- 238000004519 manufacturing process Methods 0.000 title description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N ammonia Natural products N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 4
- 239000010985 leather Substances 0.000 claims description 4
- 230000003647 oxidation Effects 0.000 claims description 4
- 238000007254 oxidation reaction Methods 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 150000001875 compounds Chemical class 0.000 claims description 3
- 239000000843 powder Substances 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims description 2
- 229910001385 heavy metal Inorganic materials 0.000 claims description 2
- 150000007522 mineralic acids Chemical class 0.000 claims description 2
- 150000007524 organic acids Chemical class 0.000 claims description 2
- 239000007800 oxidant agent Substances 0.000 claims description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid Substances OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 2
- 238000000034 method Methods 0.000 claims 3
- 239000000975 dye Substances 0.000 description 6
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- LOCWBQIWHWIRGN-UHFFFAOYSA-N 2-chloro-4-nitroaniline Chemical compound NC1=CC=C([N+]([O-])=O)C=C1Cl LOCWBQIWHWIRGN-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 239000001049 brown dye Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 150000008049 diazo compounds Chemical class 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 210000002268 wool Anatomy 0.000 description 1
Landscapes
- Coloring (AREA)
Description
Verfahren zur Darstellung eines aus einem Trisazofarbstoff erhaltenen, färbenden Reaktionsproduktes. Es wurde gefunden, dass ein wertvoller, brauner Farbstoff von noch unbekannter Konstitution entsteht, wenn man die Verbin dung 4-Nitro-4'-aminodiphenylamin-2-sulfon säure-azo-3-amino-l-oxybenzol-4-sulfonsäure- azo-1,3 -dioxybenzol - azo - 2 -chlor -4-nitro-1- aminobenzol bei Gegenwart von wässerigem Ammoniak und einem Schwermetall mit Oxydationsmitteln, vorzugsweise mit Luft, behandelt.
Der neue Farbstoff stellt ein schwärzliches Pulver dar, das sich in Was ser mit brauner und in konzentrierter Schwe felsäure mit dunkelvioletter Farbe löst. Im Gegensatz zum Ausgangsfarbstoff färbt er Wolle und Seide kaum mehr an, dagegen er zeugter auf Leder ein schönes, sattes Braun, dessen Farbton von dem Grade der Oxyda tion abhängig ist. Diese Lederfärbungen sind ausgezeichnet durch hervorragende Echtheit. gegen Licht und alkalischen Fett <B>en</B> sowie organische und anorganische Säuren.
<I>Beispiel:</I> 50 Teile des Farbstoffes, erhalten durch Kuppeln von diazotiertem 4-Nitro-4'-amino- diphenylamin-2-sulfonsäure mit 3-Amino-l- oxybenzol - 4 - sulfonsäure, Weiterdiazotieren der Zwischenverbindung und Kuppeln mit 1,3-Dioxybenzol und zuletzt Vereinigen mit der Diazoverbindung aus 2-Chlor-4-nitro-l- aminobenzol, werden in 500 Liter Wasser und mit soviel Ammoniak in der Wärme ge löst,
dass deutlich ammoniakalisehe Reaktion vorhanden ist und diese auch bei der weite ren Behandlung bestehen bleibt. Mittelst einer kupfernen Dampfschlange heizt man auf 90 C auf und leitet bei dieser Tempera tur einen schwachen Luftstrom durch die Lösung. Die anfänglich bräunlichgelbe Lö sung wird braun. Die Oxydation ist been det, wenn Farbton und Stärke der Lösung sich nicht mehr ändern, was nach einigen Stunden der Fall ist.
Der Farbstoff wird in der Wärme aus der angesäuerten Lösung ausgesalzen und stellt nach dem Trocknen ein schwärzliches Pulver dar. Chromgegerb tes und vegetabilisch gegerbtes Leder wird in tief dunkelbraunen Tönen gefärbt. Dic alkalische Umwandlung des hier beschriebe nen Trisazofarbstoffes führt zu einer wesent lichen Verbesserung der Lichtechtheit. Die Färbungen weisen sehr starke Verschiebung und Vertiefung des Farbtones von hellbraun nach dunkelbraun auf.
Process for preparing a coloring reaction product obtained from a trisazo dye. It has been found that a valuable, brown dye of as yet unknown constitution is formed when the compound 4-nitro-4'-aminodiphenylamine-2-sulfonic acid-azo-3-amino-1-oxybenzene-4-sulfonic acid-azo is used -1,3-dioxybenzene-azo-2-chloro -4-nitro-1-aminobenzene in the presence of aqueous ammonia and a heavy metal with oxidizing agents, preferably with air.
The new dye is a blackish powder that dissolves in water with a brown color and in concentrated sulfuric acid with a dark purple color. In contrast to the original dye, it hardly stains wool and silk any more, on the other hand it produces a beautiful, rich brown on leather, the color of which depends on the degree of oxidation. These leather dyeings are distinguished by their excellent fastness. against light and alkaline grease as well as organic and inorganic acids.
<I> Example: </I> 50 parts of the dye, obtained by coupling diazotized 4-nitro-4'-aminodiphenylamine-2-sulfonic acid with 3-amino-l-oxybenzene-4-sulfonic acid, further diazotizing the intermediate compound and Coupling with 1,3-dioxybenzene and finally combining with the diazo compound of 2-chloro-4-nitro-l-aminobenzene, are dissolved in 500 liters of water and with enough ammonia in the heat,
that there is a clear ammoniacal reaction and that this persists even with further treatment. Using a copper steam coil, it is heated to 90 C and at this temperature a weak stream of air is passed through the solution. The initially brownish-yellow solution turns brown. The oxidation is finished when the color and strength of the solution no longer change, which is the case after a few hours.
The dyestuff is salted out from the acidified solution in the heat and after drying it is a blackish powder. Chrome-tanned and vegetable-tanned leather is dyed in deep dark brown tones. The alkaline conversion of the trisazo dye described here leads to a substantial improvement in the lightfastness. The colorations show a very strong shift and deepening of the hue from light brown to dark brown.
Claims (1)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE180273X | 1933-09-15 | ||
| CH177582T | 1935-06-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH180273A true CH180273A (en) | 1935-10-15 |
Family
ID=25720007
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH180273D CH180273A (en) | 1933-09-15 | 1934-08-21 | Process for preparing a coloring reaction product obtained from a trisazo dye. |
Country Status (1)
| Country | Link |
|---|---|
| CH (1) | CH180273A (en) |
-
1934
- 1934-08-21 CH CH180273D patent/CH180273A/en unknown
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