CH106110A - Process for the production of a new intermediate product. - Google Patents
Process for the production of a new intermediate product.Info
- Publication number
- CH106110A CH106110A CH106110DA CH106110A CH 106110 A CH106110 A CH 106110A CH 106110D A CH106110D A CH 106110DA CH 106110 A CH106110 A CH 106110A
- Authority
- CH
- Switzerland
- Prior art keywords
- mole
- sulfonic acid
- aminonaphthol
- production
- ammonia
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D251/00—Heterocyclic compounds containing 1,3,5-triazine rings
- C07D251/02—Heterocyclic compounds containing 1,3,5-triazine rings not condensed with other rings
- C07D251/12—Heterocyclic compounds containing 1,3,5-triazine rings not condensed with other rings having three double bonds between ring members or between ring members and non-ring members
- C07D251/26—Heterocyclic compounds containing 1,3,5-triazine rings not condensed with other rings having three double bonds between ring members or between ring members and non-ring members with only hetero atoms directly attached to ring carbon atoms
- C07D251/40—Nitrogen atoms
- C07D251/54—Three nitrogen atoms
- C07D251/70—Other substituted melamines
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Paper (AREA)
- Coloring (AREA)
Description
Verfahren zur Herstellung eines netten Zwischenproduktes. Es wurde gefunden, dass man ein neues Zwischenprodukt, das tertiäre Kondensations produkt von einem Mol. Cyanurchlorid mit einem Mol. 2.5-Aminonaphthol-7-sulfosäure, einem Mol. 2.8-Aminonaphthol-6-sulfosäure und einem Mol. Ammoniak, erhält,
wenn man auf ein Mol. Cyanurchlorid in beliebiger Reihenfolge ein Mol. 2.5-Aminonaphthol- 7-sulfosäure, ein Mol. 2.8-Aminonaphthol- 6-sulfosäure und ein Mol. Ammoniak ein wirken lässt.
Diese Kondensation wird durch Zusam menrühren der Komponenten in einem geeig neten Verdünnungsmittel durchgeführt, und es wurde gefunden, dass Wasser als solches in überraschender Weise sehr gut geeignet ist. Das tertiäre Kondensationsprodukt aus einem Mol. Cyanurchlorid mit einem Mol. 2.5 Aminonaphthol-7-sulfosäure, einem Mol. 2.8- Aminonaphthol-6-sulfosäure und einem Mol. Ammoniak bildet ein in Wasser ziemlich leicht lösliches, fast farbloses Pulver.
Es enthält kein reaktionsfähiges Chloratom mehr und stellt ein wertvolles Ausgangsmaerial zur Herstellung von Farbstoffen dar. Beispiel: Eine fein verteilte Aufschlemmung von 18,5 Teilen Cyanurchlorid in 1000 Teilen Wasser wird mit Salzsäure schwach sauer gestellt und nach und nach bei 0 unter Rüh ren mit einer Lösung von 26,2 Teilen 2 . 5- aminonaphthol-7-sulfosaurem Natrium in 500 Teilen Wasser versetzt, wobei man durch Zu gabe von Sodalösung (im ganzen 5,3 Teile) die Reaktion immer schwach sauer hält.
Die so erhaltene klare Lösung wird in der Kälte mit Soda neutralisiert und mit einer weiteren Lösung von 26,2 Teilen des Natronsalzes der 2.8-Aminonaphthol-6-sulfosäure versetzt; wo bei man durch Zugabe von Sodalösung die Reaktion schwach sauer hält.
Ist alle 2. 8- Aminonaphthol-6-sixlfosäure verschwunden, so neutralisiert man vollständig, setzt 10 Teile 20 %iges Ammoniak hinzu und kocht eine Stunde am Rückflusskühler. Hierauf isoliert man das tertiäre Kondensationspro dukt aus einem Mol. Cyanurchlorid, einem Mol. Ammoniak und einem Mol. 2 .
5-Amino- naphthol-7-sulfosäure und einem Mol. 2.8- Am#inonaphthol-6-sulfosäure durch Aussahen und Filtrieren.
Process for making a nice intermediate product. It has been found that a new intermediate product, the tertiary condensation product of one mole of cyanuric chloride with one mole of 2.5-aminonaphthol-7-sulfonic acid, one mole of 2.8-aminonaphthol-6-sulfonic acid and one mole of ammonia is obtained,
if one mole of 2.5-aminonaphthol-7-sulfonic acid, one mole of 2.8-aminonaphthol-6-sulfonic acid and one mole of ammonia are allowed to act on one mole of cyanuric chloride in any order.
This condensation is carried out by stirring the components together in a suitable diluent, and it has been found that water as such is surprisingly very suitable. The tertiary condensation product of one mole of cyanuric chloride with one mole of 2.5 aminonaphthol-7-sulfonic acid, one mole of 2.8-aminonaphthol-6-sulfonic acid and one mole of ammonia forms an almost colorless powder which is fairly easily soluble in water.
It no longer contains a reactive chlorine atom and is a valuable starting material for the production of dyes. Example: A finely divided slurry of 18.5 parts of cyanuric chloride in 1000 parts of water is made slightly acidic with hydrochloric acid and gradually at 0 while stirring with a Solution of 26.2 parts 2. 5- aminonaphthol-7-sulfonic acid sodium is added to 500 parts of water, the reaction always being kept slightly acidic by adding soda solution (5.3 parts in all).
The clear solution thus obtained is neutralized in the cold with soda and mixed with a further solution of 26.2 parts of the sodium salt of 2,8-aminonaphthol-6-sulfonic acid; where the reaction is kept weakly acidic by adding soda solution.
If all the 2. 8-aminonaphthol-6-phosilicic acid has disappeared, it is completely neutralized, 10 parts of 20% ammonia are added and the mixture is boiled for one hour on the reflux condenser. The tertiary condensation product is then isolated from one mole of cyanuric chloride, one mole of ammonia and one mole of 2.
5-aminonaphthol-7-sulfonic acid and one mole of 2.8-aminonaphthol-6-sulfonic acid by sighting and filtering.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH103430T | 1922-09-07 | ||
CH106110T | 1922-09-07 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH106110A true CH106110A (en) | 1924-08-01 |
Family
ID=25706409
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH106110D CH106110A (en) | 1922-09-07 | 1922-09-07 | Process for the production of a new intermediate product. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH106110A (en) |
-
1922
- 1922-09-07 CH CH106110D patent/CH106110A/en unknown
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