CH190893A - Process for the preparation of an azo dye. - Google Patents
Process for the preparation of an azo dye.Info
- Publication number
- CH190893A CH190893A CH190893DA CH190893A CH 190893 A CH190893 A CH 190893A CH 190893D A CH190893D A CH 190893DA CH 190893 A CH190893 A CH 190893A
- Authority
- CH
- Switzerland
- Prior art keywords
- diazotized
- azo dye
- reduced
- dye
- preparation
- Prior art date
Links
- 239000000987 azo dye Substances 0.000 title claims description 4
- 238000000034 method Methods 0.000 title claims description 4
- 238000002360 preparation method Methods 0.000 title description 2
- 239000000975 dye Substances 0.000 claims description 9
- 125000000449 nitro group Chemical group [O-][N+](*)=O 0.000 claims description 6
- YGSDEFSMJLZEOE-UHFFFAOYSA-N salicylic acid Chemical compound OC(=O)C1=CC=CC=C1O YGSDEFSMJLZEOE-UHFFFAOYSA-N 0.000 claims description 6
- 125000003277 amino group Chemical group 0.000 claims description 5
- 229920000742 Cotton Polymers 0.000 claims description 4
- TYMLOMAKGOJONV-UHFFFAOYSA-N 4-nitroaniline Chemical compound NC1=CC=C([N+]([O-])=O)C=C1 TYMLOMAKGOJONV-UHFFFAOYSA-N 0.000 claims description 3
- IMZSHPUSPMOODC-UHFFFAOYSA-N 5-oxo-1-phenyl-4h-pyrazole-3-carboxylic acid Chemical compound O=C1CC(C(=O)O)=NN1C1=CC=CC=C1 IMZSHPUSPMOODC-UHFFFAOYSA-N 0.000 claims description 3
- 230000007935 neutral effect Effects 0.000 claims description 3
- FJKROLUGYXJWQN-UHFFFAOYSA-N papa-hydroxy-benzoic acid Natural products OC(=O)C1=CC=C(O)C=C1 FJKROLUGYXJWQN-UHFFFAOYSA-N 0.000 claims description 3
- 229960004889 salicylic acid Drugs 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 239000002253 acid Substances 0.000 description 3
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 150000007513 acids Chemical class 0.000 description 2
- SKDHHIUENRGTHK-UHFFFAOYSA-N 4-nitrobenzoyl chloride Chemical compound [O-][N+](=O)C1=CC=C(C(Cl)=O)C=C1 SKDHHIUENRGTHK-UHFFFAOYSA-N 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- -1 N-substituted aminonaphthol sulfonic acids Chemical class 0.000 description 1
- BNOODXBBXFZASF-UHFFFAOYSA-N [Na].[S] Chemical compound [Na].[S] BNOODXBBXFZASF-UHFFFAOYSA-N 0.000 description 1
- 125000002252 acyl group Chemical group 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 150000001408 amides Chemical class 0.000 description 1
- 150000001733 carboxylic acid esters Chemical class 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000007859 condensation product Substances 0.000 description 1
- 125000000664 diazo group Chemical group [N-]=[N+]=[*] 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 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 description 1
- 239000003973 paint Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Coloring (AREA)
Description
Verfahren zur Herstellung eines Azofarbstoffes. Es wurde gefunden, dass malt zu neuen substantiven Disazofarbstoffen dadurch ge langen kann, dass man diazotierte Nitroaroyl-m oder -p-Diamine einseitig mit amirrogruppen- freien o-Oxykarbonsäurerr oder 1-Aryl-5-pyra- zolon-3-karbonsäuren bezw. deren Derivaten, wie Karbonsäureestern, -amiden,
-aryliden oder dergleichen, kuppelt, die Nitrogruppe reduziert, weiter diazotiert und mit gegebenen falls im 1-Arylkern beliebig substituierten 1-Aryl - 5 - pyrazolon - 3 - karborrsäuren bezw. deren Derivaten oder mit N-substituierten Aminonaphtolsulfonsäuren kuppelt:
Als ge eignete N-substituierte Aminonaphtolsulforr- säuren seien beispielsweise genannt N-Alkyl-, N-Aryl-, Acyl- oder N-Aroyl-2-amino-5-naph- tol-7-sulforrsäure. Die so erhältlichen Farbstoffe ziehen im allgemeinen auf Baumwolle in gelben bis roten Tönen, die neutral und alkalisch gut ätzbar sind.
Enthalten die Farb stoffe in der zweiten Kupplungskomponente eine diazotierbare Aminogruppe, so können sie in Substanz oder auf der Faser in be kannter Weise diazotiert und weiter ent wickelt werden. Die so nacbbehandelten Färbungen behalten ihre Ätzbarkeit bei.
Anstatt von einem Nitroaroyl-m oder -p-Diamin auszugehen, kann man zur Bildung des als Zwischenprodukt gebildeten lyIonoazo- farbstoffes selbstverständlich zunächst ein Nitroarylamin mit einer der bei der ersten Kupplung genannten Gelbkomponenten kup peln, die Nitrogruppe des 1!1=onoazofarbstoffes in bekannter Weise reduzieren und mit einem Nitroaroylchlorid kondensieren.
Gegenstand des vorliegenden Patentes ist ein Verfahren zur Herstellung eitles Azofarb- stoffes. Es ist dadurch gekennzeichnet, dass man diazotiertes p-Nitranilin mit Salicylsäure kuppelt, die Nitrogruppe zur Aminogruppe reduziert, p-nitrobenzoyliert, die Nitrogruppe zur Aminogruppe reduziert, diazotiert und mit 1-Phenyl-5-pyrazolon-3-karbonsäure ver einigt.
Der erhaltene Farbstoff liefert auf Baum wolle rotstickig gelbe Töne und ist neutral und alkalisch vorzüglich ätzbar.
Beispiel: 28 Teile des in bekannter Weise durch Diazotieren von p-Nitranilin und Kuppeln mit Salicylsäure und nachfolgende Reduktion hergestellten Monoazofarbstoffes werden in etwa 500 Teilen Wasser gelöst, bei 70-710 unter Einhaltung der alkalischen Reaktion so lange mit p-Nitrobenzoylchlorid versetzt, bis eine herausgenommene Probe sich nicht mehr diazotieren lässt.
Das ausgefallene Kon densationsprodukt wird wie im Beispiel des Hauptpatentes angegeben mitSchwefelnatrium reduziert, diazotiert und mit 20 Teilen 1-Phenyl- 5-pyrazolon-3-karbonsäure gekuppelt. Der er haltene Farbstoff ist auf Baumwolle ein rotatichiges Gelb, das sich neutral und alka lisch sehr gut ätzen lässt.
Process for the preparation of an azo dye. It has been found that paints can lead to new substantive disazo dyes ge that one respectively diazotized nitroaroyl-m or -p-diamines with amirro-free o-oxycarboxylic or 1-aryl-5-pyrazolone-3-carboxylic acids. their derivatives, such as carboxylic acid esters and amides,
-arylidene or the like, couples, the nitro group is reduced, further diazotized and, if appropriate, 1-aryl-5-pyrazolone-3-carboric acids or with any substituted 1-aryl in the 1-aryl nucleus. their derivatives or coupled with N-substituted aminonaphthol sulfonic acids:
N-alkyl, N-aryl, acyl or N-aroyl-2-amino-5-naphthol-7-sulforric acid may be mentioned, for example, as suitable N-substituted aminonaphtholsulforric acids. The dyes obtainable in this way generally apply to cotton in yellow to red shades, which can be easily etched in a neutral and alkaline manner.
If the dyes in the second coupling component contain a diazotizable amino group, they can be diazotized in bulk or on the fiber in a known manner and further developed. The dyeings treated in this way retain their etchability.
Instead of starting from a nitroaroyl-m or -p-diamine, one can of course first couple a nitroarylamine with one of the yellow components mentioned in the first coupling, the nitro group of the 1! 1 = onoazo dye in a known manner, to form the lyonoazo dye formed as an intermediate Reduce manner and condense with a nitroaroyl chloride.
The subject of the present patent is a process for the production of vain azo dyes. It is characterized in that diazotized p-nitroaniline is coupled with salicylic acid, the nitro group is reduced to the amino group, p-nitrobenzoylated, the nitro group is reduced to the amino group, diazotized and combined with 1-phenyl-5-pyrazolone-3-carboxylic acid.
The dye obtained produces red-sticky yellow tones on cotton and is extremely suitable for neutral and alkaline etching.
Example: 28 parts of the monoazo dye prepared in a known manner by diazotizing p-nitroaniline and coupling with salicylic acid and subsequent reduction are dissolved in about 500 parts of water, and p-nitrobenzoyl chloride is added at 70-710 while maintaining the alkaline reaction until a removed sample can no longer be diazotized.
As indicated in the example of the main patent, the precipitated condensation product is reduced with sodium sulfur, diazotized and coupled with 20 parts of 1-phenyl-5-pyrazolone-3-carboxylic acid. The dye obtained is a rotatichiges yellow on cotton, which can be etched neutrally and alkali very well.
Claims (1)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE190893X | 1934-06-27 | ||
| CH185946T | 1935-05-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH190893A true CH190893A (en) | 1937-05-15 |
Family
ID=25721302
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH190893D CH190893A (en) | 1934-06-27 | 1935-05-29 | Process for the preparation of an azo dye. |
Country Status (1)
| Country | Link |
|---|---|
| CH (1) | CH190893A (en) |
-
1935
- 1935-05-29 CH CH190893D patent/CH190893A/en unknown
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