Continuous method for producing pentafluoroethyl iodide

Details Continuous method for producing pentafluoroethyl iodide Continuous method for producing pentafluoroethyl iodide

C - Chemistry, Metallurgy

07

C

C07C 17/04 (2006.01) C07C 19/16 (2006.01)

Patent

CA 2295220

The invention relates to a continuous method for producing pentafluoroethyl iodine, iodine pentafluoride and tetrafluoroethylene, characterized in that the iodine is dissolved in iodine pentafluoride and the solution obtained is continuously fed to a vertical bubble column (1), which is filled with iodine pentafluoride and which has a tetrafluoroethylene feed line on its lower end, wherein the reaction area is maintained at 85 to 95 ~C, preferably 90 ~C and the formed pentafluoroethyl iodide is released in the form of a gas in the head of the reactor (1), is liquefied in a downstream cooled condenser and stored in vessels.

L'invention concerne un procédé continu de production d'iodure de pentafluoroéthyle à partir d'iode, de pentafluorure d'iode et de tétrafluoroéthylène. Selon ce procédé, l'iode est dissous dans du pentaflurorure d'iode et la solution ainsi obtenue est introduite en continu dans un réacteur en colonne à bulles (1) vertical qui est rempli de pentafluorure d'iode et qui, à son extrémité inférieure, possède une conduite d'alimentation en tétrafluoroéthylène. La zone de réaction est maintenue à une température comprise entre 85 et 95· C, de préférence à 90 ·C. L'iodure de pentafluoroéthyle formé se dégage sous forme gazeuse en tête du réacteur (1), est liquéfié dans un condenseur refroidi monté en aval puis est stocké dans des réservoirs.

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