CH174528A - Process for the preparation of an azo dye. - Google Patents
Process for the preparation of an azo dye.Info
- Publication number
- CH174528A CH174528A CH174528DA CH174528A CH 174528 A CH174528 A CH 174528A CH 174528D A CH174528D A CH 174528DA CH 174528 A CH174528 A CH 174528A
- Authority
- CH
- Switzerland
- Prior art keywords
- azo dye
- preparation
- dye
- lightfastness
- red
- Prior art date
Links
- 239000000987 azo dye Substances 0.000 title claims description 4
- 238000000034 method Methods 0.000 title claims description 4
- 239000000975 dye Substances 0.000 claims description 3
- 150000008049 diazo compounds Chemical class 0.000 claims description 2
- 239000004922 lacquer Substances 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 239000000843 powder Substances 0.000 claims description 2
- 239000000758 substrate Substances 0.000 description 2
- VMHLLURERBWHNL-UHFFFAOYSA-M Sodium acetate Chemical compound [Na+].CC([O-])=O VMHLLURERBWHNL-UHFFFAOYSA-M 0.000 description 1
- 125000000664 diazo group Chemical group [N-]=[N+]=[*] 0.000 description 1
- 235000017281 sodium acetate Nutrition 0.000 description 1
- 239000001632 sodium acetate Substances 0.000 description 1
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
Verfahren zur Herstellung eines Azofarbstoffes. Gebenstand des vorliegenden Zusatz patentes ist ein Verfahren zur Herstellung eines Azofarbstoffes, welches dadurch ge kennzeichnet ist, dass man die Diazoverbin- dung von 3-Amino-4-methylbenzol-l-sulf- anilid mit 2.3-Oxynaphthoyl-aminobenzol kuppelt. Die Einwirkung der beiden Kom ponenten aufeinander kann auch in Gegen wart eines Substrates erfolgen.
<I>Beispiel:</I> 13,1 gr 3-Amino-4-methylbenzol-l-sulf- anilid werden wie üblich diazotiert. Die mit Nratriumacetat auf Congoneutralität ab#,e- stumpfte Diazolösung rührt man in eine Lö sung von 13,15 gr '-). 3-Oxynaphthoyl-amino- berizol in verdünnter Lauge ein. Der ent stehende Farbstoff wird abfiltriert, gut aus gewaschen und getrocknet.
Die Einwirkung der beiden Komponenten aufeinander kann auch in Gegenwart eines Substrates erfolgen. Der Farbstoff stellt ein rotes Pulver dar. Er lässt sich in bekannter Weise in rote Farblacke von guter Öl- und Lichtechtheit überführen und liefert vulkanisierechte Kautschukfärbungen von hoher Lichtecht heit.
Process for the preparation of an azo dye. The present additional patent is a process for the production of an azo dye, which is characterized in that the diazo compound of 3-amino-4-methylbenzene-1-sulfanilide is coupled with 2,3-oxynaphthoyl-aminobenzene. The action of the two components on one another can also take place in the presence of a substrate.
<I> Example: </I> 13.1 g of 3-amino-4-methylbenzene-1-sulfanilide are diazotized as usual. The diazo solution blunted with sodium acetate to congoneutrality is stirred into a solution of 13.15 g. 3-oxynaphthoylamino-berizole in dilute lye. The resulting dye is filtered off, washed well and dried.
The two components can also act on one another in the presence of a substrate. The dye is a red powder. It can be converted in a known manner into red colored lacquers of good oil and lightfastness and gives vulcanization-fast rubber colorations of high lightfastness.
Claims (1)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE174528X | 1932-09-24 | ||
| CH169703T | 1933-09-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH174528A true CH174528A (en) | 1935-01-15 |
Family
ID=25718800
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH174528D CH174528A (en) | 1932-09-24 | 1933-09-21 | Process for the preparation of an azo dye. |
Country Status (1)
| Country | Link |
|---|---|
| CH (1) | CH174528A (en) |
-
1933
- 1933-09-21 CH CH174528D patent/CH174528A/en unknown
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