CH134838A - Process for the preparation of an arylaminonaphthalene derivative. - Google Patents

Process for the preparation of an arylaminonaphthalene derivative.

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Publication number
CH134838A
CH134838A CH134838DA CH134838A CH 134838 A CH134838 A CH 134838A CH 134838D A CH134838D A CH 134838DA CH 134838 A CH134838 A CH 134838A
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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 CH134838A publication Critical patent/CH134838A/en

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Description

  

  Verfahren zur Darstellung eines     Arylaminonaphtalinderivates.       Wie gefunden wurde, erhält man     4-(a-          Naplhtylamino)    -4 '-     aminodiphenylaminsulfo-          säure,    wenn man     1-Oxynaphtalin    mit 4.     4'-          Diaminodiphenylaminsulfosäure    durch Er  hitzen auf höhere Temperatur im offenen  oder im Druckgefäss' in Gegenwart von     13i-          sulfitlauge    kondensiert.  



  <I>Beispiel</I>  In einem verbleiten oder emaillierten  Rührkessel mit Heizmantel und     Rüekfluss-          kühler    werden 140 Teile     1-Oxy        na.plitalin     und 280 Teile     4.4'-Diaminodiphenylamin-          2-sulfosäure    mit 2000 Teilen N     atriumbi-          sulfitlösung    von<B>36,'</B>     B6    und 2,000 Teilen  Wasser 50 Stunden unter Rühren gekocht.

    Das Kondensationsprodukt     wird    mit Mine  ralsäure gefällt; es wird durch     Umlösen     aus verdünnter     Sodalösung    und Wiederaus  fällen mit Säure gereinigt und stellt eine 4-    (a -     Na-phtylamino)    - 4'-     aminodiphenylamin-          sulfosäure    dar.  



  Die     Sulfosäure    bildet . ein     blaugraues          Pulver,    das aus schwachsaurer, wässeriger  Lösung auf tierische     Fä.ser    zieht und beim  Nachbehandeln mit Chromsäure echte blau  schwarze, Töne liefert. Sie kann zur     Färbung     von     Acetatseide    Verwendung finden.



  Process for the preparation of an arylaminonaphthalene derivative. As has been found, 4- (a-Naplhtylamino) -4 '- aminodiphenylamine sulfonic acid is obtained if 1-oxynaphthalene is added to 4,4'-diaminodiphenylamine sulfonic acid by heating to a higher temperature in an open or in a pressure vessel in the presence of 13- sulfite liquor condenses.



  <I> Example </I> In a leaded or enamelled stirred kettle with a heating jacket and reflux condenser, 140 parts of 1-oxyna.plitalin and 280 parts of 4,4'-diaminodiphenylamine-2-sulfonic acid are mixed with 2000 parts of sodium bisulfite solution from B. > 36, '</B> B6 and 2,000 parts of water boiled for 50 hours while stirring.

    The condensation product is precipitated with mineral acid; It is cleaned by dissolving from dilute soda solution and precipitating again with acid and represents a 4- (a - Na-phtylamino) - 4'-aminodiphenylamine sulfonic acid.



  The sulfonic acid forms. a blue-gray powder that draws from a weakly acidic, aqueous solution on animal barrels and, when treated with chromic acid, delivers real blue-black tones. It can be used to dye acetate silk.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines Aryl- aminonaphtalinderivates, dadurch gekenn zeichnet, dass man 1-Oxynaphtalin mit 4.4'-Diamino-,diphenylamin-2-sulfosäure in Gegenwart von Bisulfitlauge auf höhere Temperatur erwärmt. Die Sulfosäure bildet ein blaugraues Pulver, das aus schwachsaurer, z@,ässeriger Lösung auf tierische Faser zieht und beim Nachbehandeln mit Chromsäure echte blau schwarze Töne liefert. Claim: Process for the preparation of an aryl aminonaphthalene derivative, characterized in that 1-oxynaphthalene is heated to a higher temperature with 4.4'-diamino, diphenylamine-2-sulfonic acid in the presence of bisulfite lye. The sulphonic acid forms a blue-gray powder that is drawn from a weakly acidic, aqueous solution onto animal fibers and, when treated with chromic acid, produces real blue-black tones. UNTERANSPRUCH: Verfahren nach Patentanspruch, dadurch gekennzeichnet, dass man die Umsetzung unter Druck im geschlossenen Gefäss vor nimmt. SUBCLAIM: Method according to claim, characterized in that the reaction is carried out under pressure in a closed vessel.
CH134838D 1926-12-13 1927-12-03 Process for the preparation of an arylaminonaphthalene derivative. CH134838A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE134838X 1926-12-13
CH132030T 1927-12-03

Publications (1)

Publication Number Publication Date
CH134838A true CH134838A (en) 1929-08-15

Family

ID=25711747

Family Applications (1)

Application Number Title Priority Date Filing Date
CH134838D CH134838A (en) 1926-12-13 1927-12-03 Process for the preparation of an arylaminonaphthalene derivative.

Country Status (1)

Country Link
CH (1) CH134838A (en)

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