CH180260A - Process for the preparation of an o-amidoazo dye. - Google Patents
Process for the preparation of an o-amidoazo dye.Info
- Publication number
- CH180260A CH180260A CH180260DA CH180260A CH 180260 A CH180260 A CH 180260A CH 180260D A CH180260D A CH 180260DA CH 180260 A CH180260 A CH 180260A
- Authority
- CH
- Switzerland
- Prior art keywords
- dye
- amidoazo
- preparation
- azo
- production
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 4
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 3
- 239000000987 azo dye Substances 0.000 claims description 3
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 claims description 3
- 239000000843 powder Substances 0.000 claims description 2
- 239000000975 dye Substances 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical class [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 229960000583 acetic acid Drugs 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- -1 aromatic diazo compounds Chemical class 0.000 description 1
- 238000006243 chemical reaction Methods 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
- 125000000664 diazo group Chemical group [N-]=[N+]=[*] 0.000 description 1
- 235000003891 ferrous sulphate Nutrition 0.000 description 1
- 239000011790 ferrous sulphate Substances 0.000 description 1
- 239000012362 glacial acetic acid Substances 0.000 description 1
- 239000013067 intermediate product Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 229910000359 iron(II) sulfate Inorganic materials 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 125000000449 nitro group Chemical group [O-][N+](*)=O 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 159000000000 sodium salts Chemical class 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
verfahren zur Herstellung eines o-Amidoazofarbstoffes. Es wurde gefunden, dass o-Nitroazofarb- stoffe aus solchen aromatischen Diazoverbin- dungeii, die o-ständig zur Diazogruppe Nitro- grnppen tragen, und beliebigen Kupplungs komponenten, gegebenenfalls nach weiterer Umwandlung, durch die Behandlung mit Ferroalzen in alkalischem Medium in die entsprechenden o- Ainidoazofarbstoffe über geführt werden.
Die neuen Produkte sollen alFarbstoffe oder als Zwischenprodukte zur Herstellung von Farbstoffen Verwen- diing finden.
t*egensta.nd des vorliegenden Patentes ist < #in Verfahren zur Herstellung eineso-Amido- i azof, arbstoffes. Es besteht darin, dass man den Farbstoff 4'-Methyl-2'-nitrobenzol-l',2- -l-oxyna.phthalin-4-sulfonsäure in # -izo einem alkalischen Medium mit einem Ferrosalz be handelt.
Beispiel: <B>37,7</B> Gewichtsteile des Azofarbstoffes l'- Methyl - 2'-nitrobenzol-I.',2-azo-l-oxynaph- tlialin-4-sizlfonsäure werden in Form ihres Natriumsalzes in drei Liter Wasser an- gesehlii.mmt. Dazu gibt man 450 cm' 20 %ige Sodalösung und lässt unter gutem Rühren bei etwa 40 eine Lösung von 168g Ferro- sulfat in etwa ein Liter Wasser einlaufen.
Alsdann erwärmt man das Gemisch auf 90 bis 100 , saugt von Eisenschlamm ab und scheidet aus der Lösung den neuen Farb stoff mit Salzsäure ab. Er wird abgesaugt, mit Wasser gewaschen und zweckmässig durch Behandeln mit heissem Eisessig ge reinigt. Das Produkt ist ein braunes Pulver, das sich in Sodalösung braunstichigrot löst.
process for the production of an o-amidoazo dye. It has been found that o-nitroazo dyes are obtained from aromatic diazo compounds which carry nitro groups o to the diazo group, and any coupling components, if necessary after further conversion, by treatment with ferrous salts in an alkaline medium into the corresponding o - Ainidoazo dyes are passed over.
The new products are to be used as dyes or as intermediate products for the production of dyes.
Part of the present patent is in a process for the production of an o-amido-azof, dye. It consists in treating the dye 4'-methyl-2'-nitrobenzene-l ', 2- -l-oxyna.phthalin-4-sulfonic acid in # -izo an alkaline medium with a ferrous salt.
Example: 37.7 parts by weight of the azo dye 1'-methyl-2'-nitrobenzene-I. ', 2-azo-1-oxynaphthylialin-4-siclfonic acid are in the form of its sodium salt in three liters Water an- gesehlii.mmt. To this are added 450 cm 2 of 20% soda solution and a solution of 168 g of ferrous sulfate is run into about one liter of water at about 40 ° C. with thorough stirring.
The mixture is then heated to 90 to 100, iron sludge is filtered off with suction and the new dye is separated from the solution with hydrochloric acid. It is filtered off with suction, washed with water and appropriately cleaned by treating it with hot glacial acetic acid. The product is a brown powder that dissolves brownish-red in soda solution.
Claims (1)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE180260X | 1933-05-18 | ||
| CH175357T | 1934-04-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH180260A true CH180260A (en) | 1935-10-15 |
Family
ID=25719675
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH180260D CH180260A (en) | 1933-05-18 | 1934-04-30 | Process for the preparation of an o-amidoazo dye. |
Country Status (1)
| Country | Link |
|---|---|
| CH (1) | CH180260A (en) |
-
1934
- 1934-04-30 CH CH180260D patent/CH180260A/en unknown
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