CH134837A - Process for the preparation of an arylaminonaphthalene derivative. - Google Patents

Process for the preparation of an arylaminonaphthalene derivative.

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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
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CH
Switzerland
Prior art keywords
preparation
derivative
blue
arylaminonaphthalene
sulfonic acid
Prior art date
Application number
Other languages
German (de)
Inventor
Aktiengesellsc Farbenindustrie
Original Assignee
Ig Farbenindustrie Ag
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ig Farbenindustrie Ag filed Critical Ig Farbenindustrie Ag
Publication of CH134837A publication Critical patent/CH134837A/en

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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)

PATENTANSPRUCH: Verfahren zur Darstellung eines Aryl- aminonaphtalinderivates, dadurch gekenn zeichnet, dass man 2-Oxynaphtalin mit 4.4'-Diaminodiphenylamin-2-sulfosäure in Gegenwart von Bisulfitlauge auf höhere Temperatur erwärmt. 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 blaüschwa@rze Töne liefert. UNTERANSPRITCH . Claim: A process for the preparation of an aryl aminonaphthalene derivative, characterized in that 2-oxynaphthalene is heated to a higher temperature with 4,4'-diaminodiphenylamine-2-sulfonic acid in the presence of bisulfite lye. The new compound forms a blue-gray powder that is absorbed from a weakly acidic aqueous solution on animal fibers and, when treated with chromic acid, delivers real blue-black tones. UNDER CLAIM. Verfahren nach Patentanspruch, dadurch gekennzeichnet, dass man die Umsetzung unter Druck im geschlossenen Gefäss vor nimmt. Process according to claim, characterized in that the reaction is carried out under pressure in a closed vessel.
CH134837D 1927-12-03 1927-12-03 Process for the preparation of an arylaminonaphthalene derivative. CH134837A (en)

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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