CH209501A - Process for the preparation of a thiodiphenylamine derivative. - Google Patents

Process for the preparation of a thiodiphenylamine derivative.

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Publication number
CH209501A
CH209501A CH209501DA CH209501A CH 209501 A CH209501 A CH 209501A CH 209501D A CH209501D A CH 209501DA CH 209501 A CH209501 A CH 209501A
Authority
CH
Switzerland
Prior art keywords
thiodiphenylamine
derivative
sulfur
preparation
anisidine
Prior art date
Application number
Other languages
German (de)
Inventor
Gesellschaft Fuer Chemis Basel
Original Assignee
Chem Ind Basel
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 Chem Ind Basel filed Critical Chem Ind Basel
Publication of CH209501A publication Critical patent/CH209501A/en

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Description

  

  Verfahren zur Herstellung eines     Thiodiphenylaminderivates.       Es wurde gefunden, dass man in einfacher  Weise zum     Thiodiphenylaminderivat    der  Formel  
EMI0001.0003     
    gelangt, wenn man Schwefel auf eine Mi  schung von     p-Anisidin    und     Hydrochinon    im       Mol.-Verhältnis    1 : 1 bei höherer Temperatur  einwirken lässt. Das Produkt stellt ein bei  nahe farbloses, leicht     oxydables    Pulver dar,  das sich in     ätzalkalischer        Natriumhydrosulfit-          lösung    mit oliver und in konzentrierter  Schwefelsäure mit kornblumenblauer Farbe  löst.

   Es wird zur Herstellung von Schwefel  farbstoffen verwendet. Zum Beispiel wird es  durch Behandeln mit Polysulfid in einen       violettbraunen    Schwefelfarbstoff übergeführt.  <I>Beispiel:</I>  24,6 Teile     p-Anisidin,    22 Teile     Hydro-          chinon,    19,2 Teile Schwefel werden 4 Stun-    den bei 200-205 o erhitzt, wobei die an  fänglich dünnflüssige Schmelze unter     Ent-          weichung    von Wasser und Schwefelwasser  stoff dicker wird.

   Die erkaltete Schmelze  wird gemahlen und das neue Kondensations  produkt daraus isoliert durch Lösen in     10-          bis        20o/oiger        Schwefelnatriumlösung,        Filtrieren     der gelben Lösung von etwas unlöslichen  Produkten und Ausfällen entweder durch  Ausblasen mit Luft oder durch Versetzen  mit     Ammonchlorid    oder verdünnter Mineral  säure.



  Process for the preparation of a thiodiphenylamine derivative. It has been found that one can easily obtain the thiodiphenylamine derivative of the formula
EMI0001.0003
    when sulfur is allowed to act on a mixture of p-anisidine and hydroquinone in a molar ratio of 1: 1 at a higher temperature. The product is a nearly colorless, slightly oxidizable powder which dissolves in caustic sodium hydrosulphite solution with an olive color and in concentrated sulfuric acid with a cornflower blue color.

   It is used to make sulfur dyes. For example, it is converted into a purple-brown sulfur dye by treatment with polysulfide. <I> Example: </I> 24.6 parts of p-anisidine, 22 parts of hydroquinone, 19.2 parts of sulfur are heated for 4 hours at 200-205 o, whereby the initially thin-flowing melt escapes becomes thicker from water and hydrogen sulfide.

   The cooled melt is ground and the new condensation product is isolated from it by dissolving it in 10 to 20% sodium sulphide solution, filtering the yellow solution of somewhat insoluble products and precipitating it either by blowing with air or by adding ammonium chloride or dilute mineral acid.

Claims (1)

PATENTANSPRÜCII Verfahren zur Herstellung eines Thio- diphenylaminderivates der Formel: EMI0001.0026 dadurch gekennzeichnet, dass man Schwefel auf eine Mischung von p-Anisidin und Hydro- chinon im Mol.-Verhältnis 1 : 1 bei höherer Temperatur einwirken lässt. PATENT APPLICATION II process for the preparation of a thiodiphenylamine derivative of the formula EMI0001.0026 characterized in that sulfur is allowed to act on a mixture of p-anisidine and hydroquinone in a molar ratio of 1: 1 at a higher temperature. Das Produkt stellt ein beinahe farbloses, leicht orydables Pulver dar, das sich in ätzalkalischer Na- triumhydrosulfitlösung mit oliver und in kon zentrierter Schwefelsäure mit kornblumen- blauer Farbe löst. Es wird zur Herstellung von Schwefelfarbstoffen verwendet. Zum Bei spiel wird es durch Behandeln mit Polysulfid in einen violettbraunen Schwefelfarbstoff über geführt. The product is an almost colorless, slightly oily powder that dissolves in caustic sodium hydrosulphite solution with an olive color and in concentrated sulfuric acid with a cornflower blue color. It is used to make sulfur dyes. For example, it is converted into a purple-brown sulfur dye by treating it with polysulfide.
CH209501D 1938-05-07 1938-05-07 Process for the preparation of a thiodiphenylamine derivative. CH209501A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH209501T 1938-05-07
CH204521T 1938-05-07

Publications (1)

Publication Number Publication Date
CH209501A true CH209501A (en) 1940-04-15

Family

ID=25724062

Family Applications (1)

Application Number Title Priority Date Filing Date
CH209501D CH209501A (en) 1938-05-07 1938-05-07 Process for the preparation of a thiodiphenylamine derivative.

Country Status (1)

Country Link
CH (1) CH209501A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2505772A (en) * 1950-05-02 Atkye ethers of s

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2505772A (en) * 1950-05-02 Atkye ethers of s

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