AT163818B - Process for the addition of hydrogen chloride to unsaturated compounds - Google Patents

Process for the addition of hydrogen chloride to unsaturated compounds

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Publication number
AT163818B
AT163818B AT163818DA AT163818B AT 163818 B AT163818 B AT 163818B AT 163818D A AT163818D A AT 163818DA AT 163818 B AT163818 B AT 163818B
Authority
AT
Austria
Prior art keywords
hydrogen chloride
addition
unsaturated compounds
chloride
acetylene
Prior art date
Application number
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German (de)
Inventor
Otto Dr Fruhwirth
Original Assignee
Donau Chemie 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.)
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Application filed by Donau Chemie Ag filed Critical Donau Chemie Ag
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Publication of AT163818B publication Critical patent/AT163818B/en

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  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Description

  

   <Desc/Clms Page number 1> 
 



  Verfahren zur Anlagerung von Chlorwasserstoff an ungesättigte Verbindungen 
 EMI1.1 
 werden können, z. B. im Fall des Acetylens, hat man es durch Wahl der Chlorwasserstoff- menge in der Hand, die Reaktion in die gewünschte
Richtung zu lenken, z. B. in Richtung der Ge- winnung von Vinylchlorid oder Dichloräthan. 



   Die Menge der katalytisch wirkenden Kom- bination : Merkurichlorid und Ferrichlorid ist für die Durchführung des Prozesses nicht be- sonders kritisch. Während es sich empfiehlt, einen Überschuss von wasserfreiem Eisenchlorid über die lösliche Menge zu verwenden, um absolute Trockenheit zu gewährleisten, kann die Zugabe von Merkurichlorid auf Spuren beschränkt bleiben. Es genügt z. B., eine der beiden Reaktionskomponenten, etwa Chlorwasserstoff, über mässig erwärmtes Sublimat zu leiten oder in die Reaktionsflüssigkeit metallisches Quecksilber einzubringen. Durch Abtreibung des gewonnenen Anlagerungsproduktes lässt sich das beschriebene Verfahren ohne Quecksilberverluste durchführen, wenn der Destillationsrückstand nach Regenerierung immer wieder der Reaktionsflüssigkeit zugeführt wird. 



   Beispiel   l   : Ein Gasgemisch aus gleichen Teilen Acetylen und Chlorwasserstoff wird bei 30  in eine Lösung von   HgCl+FeCIs   in Tetrachloräthan, hergestellt durch Eintragen von 0-2 Gewichtsprozent   Fecal3   und 0-01 Gewichtsprozent   HgQ   eingeleitet. Nach Sättigung der Lösung mit dem gebildeten Vinylchlorid entweicht dasselbe und wird durch Tiefkühlung kondensiert. Die Ausbeute an gewonnenem Vinylchlorid beträgt   95%   bezogen auf die angewandte Acetylenmenge. 



   Beispiel 2 : Ein Gasgemisch aus 1 Teil Acetylen und 2 Teilen Chlorwasserstoff wird durch einen Rieselturm mit umlaufendem auf   200 gehaltenen 1, 1-Dichloräthan   geleitet, in welchem als Mischkatalysator Sublimat und Ferrichlorid gelöst sind. Als Reaktionsprodukt wird 1,1-Dichloräthan mit einer Ausbeute von 95%, bezogen auf das angewandte Acetylen, erhalten. 

**WARNUNG** Ende DESC Feld kannt Anfang CLMS uberlappen**.



   <Desc / Clms Page number 1>
 



  Process for the addition of hydrogen chloride to unsaturated compounds
 EMI1.1
 can be, e.g. B. in the case of acetylene, by choosing the amount of hydrogen chloride, one has the choice of the desired reaction
Direction to steer, e.g. B. in the direction of the recovery of vinyl chloride or dichloroethane.



   The amount of the catalytically active combination: mercury chloride and ferric chloride is not particularly critical for carrying out the process. While it is advisable to use an excess of anhydrous ferric chloride over the soluble amount to ensure absolute dryness, the addition of mercury chloride can be limited to trace amounts. It is enough z. B. to conduct one of the two reaction components, such as hydrogen chloride, over moderately heated sublimate or to introduce metallic mercury into the reaction liquid. By aborting the adduct obtained, the process described can be carried out without any loss of mercury if the distillation residue is repeatedly returned to the reaction liquid after regeneration.



   Example 1: A gas mixture of equal parts of acetylene and hydrogen chloride is introduced at 30 ° into a solution of HgCl + FeCls in tetrachloroethane, prepared by adding 0-2 percent by weight of Fecal3 and 0-01 percent by weight of HgQ. After the solution is saturated with the vinyl chloride formed, the same escapes and is condensed by freezing. The yield of vinyl chloride obtained is 95% based on the amount of acetylene used.



   Example 2: A gas mixture of 1 part of acetylene and 2 parts of hydrogen chloride is passed through a trickle tower with circulating 1,1-dichloroethane kept at 200, in which sublimate and ferric chloride are dissolved as a mixed catalyst. The reaction product obtained is 1,1-dichloroethane with a yield of 95%, based on the acetylene used.

** WARNING ** End of DESC field may overlap beginning of CLMS **.

 

Claims (1)

PATENTANSPRUCH : Verfahren zur Anlagerung von Chlorwasserstoff an ungesättigte Verbindungen in einem flüssigen, wasserfreien Medium, dadurch gekennzeichnet, EMI1.2 **WARNUNG** Ende CLMS Feld Kannt Anfang DESC uberlappen**. PATENT CLAIM: Process for the addition of hydrogen chloride to unsaturated compounds in a liquid, anhydrous medium, characterized in that, EMI1.2 ** WARNING ** End of CLMS field may overlap beginning of DESC **.
AT163818D 1947-02-15 1947-02-15 Process for the addition of hydrogen chloride to unsaturated compounds AT163818B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT163818T 1947-02-15

Publications (1)

Publication Number Publication Date
AT163818B true AT163818B (en) 1949-08-25

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AT163818D AT163818B (en) 1947-02-15 1947-02-15 Process for the addition of hydrogen chloride to unsaturated compounds

Country Status (1)

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AT (1) AT163818B (en)

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