CH134837A - Process for the preparation of an arylaminonaphthalene derivative. - Google Patents
Process for the preparation of an arylaminonaphthalene derivative.Info
- Publication number
- CH134837A CH134837A CH134837DA CH134837A CH 134837 A CH134837 A CH 134837A CH 134837D A CH134837D A CH 134837DA CH 134837 A CH134837 A CH 134837A
- Authority
- CH
- Switzerland
- Prior art keywords
- preparation
- derivative
- blue
- arylaminonaphthalene
- sulfonic acid
- Prior art date
Links
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- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
Verfahren zur Darstellung eines Arylaminonaphtalinderivates. Analog dem im Hauptpatent besehrie- benen Verfahren kann man 4-(ss-Na-phtyl- amino)-4'-aminodiphLnylaminsulfosäure dar stellen, wenn man 2-Oxynaphtalin und 4. 4'- Diaminodiphenylamin-2-sulfosäure mit Bi- sulfitlauge im offenen oder im Druckgefäss durch Erhitzen kondensiert.
<I>Beispiel:</I> In einem verbleiten oder emaillierten Rührkessel mit Heizmantel und Rückfluss- kühler werden 140 Teile 2-Oxynaphtalin und 280 Teile 4.4'-Diaminodiphenylamin- 2-sulfosäure mit 2'000 Teilen Natrium- bisulfitlösung von 36 B6 und 2000 Teilen Wasser 50 bis 70 Stunden unter Rühren gekocht. Das Kondensationsprodukt wird mit Mineralsäure gefällt.
Es wird durch Umlösen aus verdünnter Sodalösung und Wiederausfällen mit Säure gereinigt und stellt eine 4-(B-Naphtylamino)-4'-aminodi- phenylaminsulfosäure dar. Die neue Verbindung bildet ein blau graues Pulver, das aus schwach saurer wässeriger Lösung auf tierische Faser auf zieht und beim Nachbehandeln mit Chrom säure echte blauschwarze Töne liefert.
Aus einer wässerigen, seifenhaltigen Suspension wird die neue Sulfosäure von Acetatseide absorbiert. Durch eine nach folgende Behandlung mit einem schwachen Oxydationsmittel wird die Seide blau ge färbt.
Process for the preparation of an arylaminonaphthalene derivative. Analogously to the process described in the main patent, 4- (ss-Na-phtyl-amino) -4'-aminodiphLnylamine sulfonic acid can be represented if 2-oxynaphthalene and 4 4'-diaminodiphenylamine-2-sulfonic acid are mixed with bisulfite liquor open or condensed in a pressure vessel by heating.
<I> Example: </I> In a leaded or enamelled stirred kettle with a heating jacket and reflux condenser, 140 parts of 2-oxynaphthalene and 280 parts of 4,4'-diaminodiphenylamine-2-sulfonic acid are mixed with 2,000 parts of sodium bisulfite solution of 36 B6 and 2000 parts of water boiled for 50 to 70 hours with stirring. The condensation product is precipitated with mineral acid.
It is purified by dissolving from dilute soda solution and reprecipitation with acid and represents a 4- (B-naphthylamino) -4'-aminodiphenylamine sulfonic acid. The new compound forms a blue-gray powder that is made from weakly acidic aqueous solution on animal fiber pulls and delivers real blue-black tones when treated with chromic acid.
The new sulfonic acid is absorbed by acetate silk from an aqueous, soap-containing suspension. The silk is colored blue by a subsequent treatment with a weak oxidizing agent.
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH132030T | 1927-12-03 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH134837A true CH134837A (en) | 1929-08-15 |
Family
ID=28679870
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH134837D CH134837A (en) | 1927-12-03 | 1927-12-03 | Process for the preparation of an arylaminonaphthalene derivative. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH134837A (en) |
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1927
- 1927-12-03 CH CH134837D patent/CH134837A/en unknown
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