CH99042A - Process for the preparation of a sulfonic acid of the 2nd 3-oxy-naphthoic anilide. - Google Patents

Process for the preparation of a sulfonic acid of the 2nd 3-oxy-naphthoic anilide.

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Publication number
CH99042A
CH99042A CH99042DA CH99042A CH 99042 A CH99042 A CH 99042A CH 99042D A CH99042D A CH 99042DA CH 99042 A CH99042 A CH 99042A
Authority
CH
Switzerland
Prior art keywords
oxy
preparation
sulfonic acid
anilide
naphthoic
Prior art date
Application number
Other languages
German (de)
Inventor
Farbwerke Vorm Meiste Bruening
Original Assignee
Hoechst 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 Hoechst Ag filed Critical Hoechst Ag
Publication of CH99042A publication Critical patent/CH99042A/en

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Description

  

  Verfahren zur Darstellung einer     Salfosäure    des 2<B>.</B>     3-Oxy-naphtoesäureanillds.       Es wurde gefunden,     dass    das     Anilid    der  2.     3-Oxynaplitoesälire,    welches nach den von       Schöpff,        Ber.   <B>25,</B> 2744 gemachten Angaben  oder     auuch    nach dem Verfahren der deutschen  Patentschriften     Nr.   <B>264527, 293897</B> und  <B>295183</B> darstellbar ist, sich durch Einwir  kung von Schwefelsäure leicht in eine bisher  noch nicht bekannte     -.L#ionosulfosä.ure    über  führen     lässt,

      welche zur Gewinnung von  Farbstoffen Verwendung finden kann.  



  Diese     Sulfosäure,    welche die     Suliogruppe     im     ss-oxynaplitoes-liure-Rest    enthält, bildet in  getrocknetem Zustande ein hellgraues Pulver.  Ihre     Lösuno-    in heissem Wasser     nei-t    dazu,       zn        ZD     nach dem Erkalten zu einer durchsichtigen  Gallerte zu erstarren. Die     Alkalisalze    sind  in Wasser mit schwachgelber Farbe leicht  löslich.  



  Die     Men-enverhältnisse,    die Konzentra  tion der verwendeten Schwefelsäure und die  Temperatur bei der Darstellung dieser     Sulfo-          säure    können innerhalb weiter Grenzen  schwanken.  



  <I>Beispiel:</I>  20<B>kg</B>     Y-Oxynaphtoesäureanilid    werden  in etwa<B>90 kg</B> Schwefelsäure von etwa<B>66 '</B>    B6 eingerührt und kurze Zeit auf<B>50</B> bis  <B>90'</B> erwärmt, bis alles gelöst ist und eine  Probe sich klar in verdünnter     Sodalösung     auflöst.

   Durch Eingiessen der     auf    20'     ab-          g#kühlten    Reaktionsmasse in eine aus<B>75 kg</B>  Kochsalz und<B>300 kg</B> Wasser     hergeäellten     Kochsalzlösung entstellt ein voluminöser hell  grauer Niederschlag, der     abfilt-riert        und    nach  mehrmaligem Anrühren mit Kochsalzlösung       und    Filtrieren direkt als Paste verwendet  werden kann.



  Method for the preparation of a nitric acid of the 2 <B>. </B> 3-Oxy-naphthoic acid anillds. It has been found that the anilide of the 2nd 3-Oxynaplitoesälire, which according to the von Schöpff, Ber. <B> 25, </B> 2744 or also according to the method of German Patent Nos. 264527, 293897 </B> and <B> 295183 </B> can be represented by the action of sulfuric acid can easily be transferred into a previously unknown -.L # ionosulfosä.ure,

      which can be used to obtain dyes.



  This sulphonic acid, which contains the sulio group in the ss-oxynaplitoes-liure residue, forms a light-gray powder when dry. Your solution in hot water tends to solidify into a transparent gelatinous jelly after cooling. The alkali salts are easily soluble in water with a pale yellow color.



  The proportions of quantities, the concentration of the sulfuric acid used and the temperature when this sulfonic acid is prepared can vary within wide limits.



  <I> Example: </I> 20 <B> kg </B> Y-oxynaphthoic anilide are stirred into about <B> 90 kg </B> sulfuric acid from about <B> 66 '</B> B6 and briefly heated to <B> 50 </B> to <B> 90 '</B> until everything is dissolved and a sample dissolves clearly in dilute soda solution.

   By pouring the reaction mass cooled to 20 g # into a saline solution made from <B> 75 kg </B> table salt and <B> 300 kg </B> water, a voluminous, light gray precipitate is disfigured, which is filtered off and can be used directly as a paste after stirring several times with saline solution and filtering.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung einer Mono- sulfosäure des 2 -3-Oxyiia.I)litoesäureanilids, welche die Sulfogruppe im ss-oxy-naphtoe- säure-Rest enthält, in getrocknetem Zu stande ein hellgraues Pulver bildet, deren Lösung in heissem Wasser nach dem Erhal ten meist zu einer durchsichtigen Gallerte erstarrt, und deren Alkalisalze in Wasser mit schwach gelber Farbe leicht löslich sind, darin bestehend, dass man dieses Anilid mit Schwefelsäure behandelt. PATENT CLAIM: Process for the preparation of a monosulfonic acid of 2 -3-Oxyiia.I) litoesäureanilids, which contains the sulfo group in the ss-oxy-naphthoic acid residue, in the dried state forms a light gray powder, the solution of which in hot water after receiving it usually solidified to a transparent gelatinous gel, and the alkali salts of which are easily soluble in water with a pale yellow color, consisting in treating this anilide with sulfuric acid.
CH99042D 1921-07-19 1922-04-28 Process for the preparation of a sulfonic acid of the 2nd 3-oxy-naphthoic anilide. CH99042A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE99042X 1921-07-19

Publications (1)

Publication Number Publication Date
CH99042A true CH99042A (en) 1923-05-01

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ID=5647010

Family Applications (1)

Application Number Title Priority Date Filing Date
CH99042D CH99042A (en) 1921-07-19 1922-04-28 Process for the preparation of a sulfonic acid of the 2nd 3-oxy-naphthoic anilide.

Country Status (1)

Country Link
CH (1) CH99042A (en)

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