CH155331A - Process for the preparation of a solid, durable tetrazomonoazo compound. - Google Patents
Process for the preparation of a solid, durable tetrazomonoazo compound.Info
- Publication number
- CH155331A CH155331A CH155331DA CH155331A CH 155331 A CH155331 A CH 155331A CH 155331D A CH155331D A CH 155331DA CH 155331 A CH155331 A CH 155331A
- Authority
- CH
- Switzerland
- Prior art keywords
- compound
- tetrazomonoazo
- acid
- durable
- solid
- Prior art date
Links
- 150000001875 compounds Chemical class 0.000 title claims description 12
- 239000007787 solid Substances 0.000 title claims description 5
- 238000000034 method Methods 0.000 title claims description 4
- 238000002360 preparation method Methods 0.000 title claims description 4
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 10
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 6
- 239000002244 precipitate Substances 0.000 claims description 4
- 239000000047 product Substances 0.000 claims description 4
- HFACYLZERDEVSX-UHFFFAOYSA-N benzidine Chemical compound C1=CC(N)=CC=C1C1=CC=C(N)C=C1 HFACYLZERDEVSX-UHFFFAOYSA-N 0.000 claims description 3
- 239000000975 dye Substances 0.000 claims description 3
- 238000001556 precipitation Methods 0.000 claims description 3
- 239000011780 sodium chloride Substances 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 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 claims description 2
- 238000004043 dyeing Methods 0.000 claims description 2
- 239000000835 fiber Substances 0.000 claims description 2
- 239000000843 powder Substances 0.000 claims description 2
- 229910052708 sodium Inorganic materials 0.000 claims description 2
- 239000011734 sodium Substances 0.000 claims description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid Substances OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 2
- RUFPHBVGCFYCNW-UHFFFAOYSA-N 1-naphthylamine Chemical compound C1=CC=C2C(N)=CC=CC2=C1 RUFPHBVGCFYCNW-UHFFFAOYSA-N 0.000 claims 2
- 239000002253 acid Substances 0.000 claims 1
- 238000003756 stirring Methods 0.000 description 3
- JBIJLHTVPXGSAM-UHFFFAOYSA-N 2-naphthylamine Chemical compound C1=CC=CC2=CC(N)=CC=C21 JBIJLHTVPXGSAM-UHFFFAOYSA-N 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- LPXPTNMVRIOKMN-UHFFFAOYSA-M sodium nitrite Chemical compound [Na+].[O-]N=O LPXPTNMVRIOKMN-UHFFFAOYSA-M 0.000 description 2
- ALKYHXVLJMQRLQ-UHFFFAOYSA-N 3-Hydroxy-2-naphthoate Chemical compound C1=CC=C2C=C(O)C(C(=O)O)=CC2=C1 ALKYHXVLJMQRLQ-UHFFFAOYSA-N 0.000 description 1
- IOVCWXUNBOPUCH-UHFFFAOYSA-M Nitrite anion Chemical compound [O-]N=O IOVCWXUNBOPUCH-UHFFFAOYSA-M 0.000 description 1
- 239000013067 intermediate product Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 235000010288 sodium nitrite Nutrition 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Landscapes
- Coloring (AREA)
Description
Verfahren zur Darstellung einer festen, haltbaren Tetrazomonoazoverbindung. Das vorliegende Verfahren betrifft die Darstellung einer haltbaren, festen Tetrazo- monoazoverbindung, dadurch gekennzeichnet, dass man 1 Mol. Benzidin tetrazotiert, die Tetrazoverbindung mit 1 Mol. a-Naphtyl- amin kuppelt, weiter dianotiert und die Tetrazomonoazoverbindung mit 1 . 3 .
6-naph- talintrisulfosaurem Natrium ausfällt, durch Zugabe von Chlornatrium die Fällung ver vollständigt und das Produkt trocknet.
Beispiel: 36,8 kg Benzidin werden auf bekannte Weise mit 100 kg 30 o/oiger Salzsäure und 27,6 kg Nitrit tetrazotiert. In die erhaltene Lösung lässt man unter gutem Rühren eine Lösung von 35,9 kg salzsaurem a-Naphtyl- amin in etwa 1200 Liter Wasser bei einer Temperatur von 0-5 o einlaufen, wobei man in Bewegung hält, bis die Bildung des Zwi schenproduktes beendet ist.
Zu der Suspen sion des Zwischenfarbstoffes setzt man wei- tere 25 kg Salzsäure 30 %, kühlt durch Eis- zugabe auf 0 ab und lässt sodann eine Lö sung von 15 kg Natriumnitrit unter die Ober fläche der Flüssigkeit laufen. Nach zwei- bis dreistündigem Rühren ist die Dianotierung beendet und eine fast klare Lösung der Tetrazomonoazoverbindung entstanden. Das Volumen der Flüssigkeit beträgt etwa 4000 Liter.
Man rührt 100 Teile 1 . 3 .6-naphtalin- trisulfosaures Natrium ein, worauf das<B>1.</B> 3. 6- naphtalintrisulfosaure Salz der Tetrazomono- azoverbindung als gelbbrauner, kristallinischer Niederschlag ausfällt. Durch Zugabe von Chlornatrium wird die Fällung vervollständigt. Man filtriert und trocknet im Vakuum bei 40-50 C.
Man erhält ein haltbares braunes Pulver, welches in Wasser mit gelbbrauner Farbe schwer löslich ist. In konzentrierter Schwefel säure löst es sich mit roter Farbe. In koi)- zentrierter Salzsäure löst sich das Produkt leicht mit dunkelbrauner Farbe. Mit ss-Oxy- naphtoesäurearyliden ergibt die Verbindung feste, wasserunlösliche schwarze Farbstoffe, die, wenn auf der Faser erzeü't, schwarze Färbungen von ausgezeichneten Echtheits eigenschaften liefern.
Process for the preparation of a solid, durable tetrazomonoazo compound. The present process relates to the preparation of a stable, solid tetrazomonoazo compound, characterized in that 1 mol. Of benzidine is tetrazotized, the tetrazo compound is coupled with 1 mol. Of a-naphthylamine, further dianotated and the tetrazomonoazo compound with 1. 3.
Sodium 6-naphthalenetrisulphonic acid precipitates, the addition of sodium chloride completes the precipitation and the product dries.
Example: 36.8 kg of benzidine are tetrazotized in a known manner with 100 kg of 30% hydrochloric acid and 27.6 kg of nitrite. A solution of 35.9 kg of hydrochloric acid a-naphthylamine in about 1200 liters of water at a temperature of 0-5 o is allowed to run into the resulting solution with thorough stirring, while stirring until the intermediate product has ended is.
A further 25 kg of 30% hydrochloric acid are added to the suspension of the intermediate dye, the mixture is cooled to 0 by adding ice and a solution of 15 kg of sodium nitrite is then allowed to run under the surface of the liquid. After two to three hours of stirring, the dianotation is complete and an almost clear solution of the tetrazomonoazo compound has formed. The volume of the liquid is about 4000 liters.
100 parts of 1 are stirred. 3 .6-naphthalene trisulfonic acid, whereupon the <B> 1. </B> 3. 6- naphthalene trisulfonic acid salt of the tetrazomonoazo compound precipitates out as a yellow-brown, crystalline precipitate. The precipitation is completed by adding sodium chloride. It is filtered and dried in vacuo at 40-50 C.
A durable brown powder is obtained which is sparingly soluble in water with a yellow-brown color. It dissolves in concentrated sulfuric acid with a red color. In koi) - centered hydrochloric acid, the product dissolves easily with a dark brown color. With β-oxynaphthoic acid arylides, the compound produces solid, water-insoluble black dyes which, when produced on the fiber, give black dyeings with excellent fastness properties.
Claims (1)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE155331X | 1930-01-07 | ||
| CH151677T | 1931-01-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH155331A true CH155331A (en) | 1932-06-15 |
Family
ID=25715864
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH155331D CH155331A (en) | 1930-01-07 | 1931-01-05 | Process for the preparation of a solid, durable tetrazomonoazo compound. |
Country Status (1)
| Country | Link |
|---|---|
| CH (1) | CH155331A (en) |
-
1931
- 1931-01-05 CH CH155331D patent/CH155331A/en unknown
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