Purification of 1,1-dichloro-1-fluorethane

C - Chemistry – Metallurgy – 07 – C

Patent

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Details

260/658.1, 204/9

C07C 17/38 (2006.01) C07C 17/395 (2006.01) C07C 19/08 (2006.01)

Patent

CA 2023836

L'invention a pour objet un procédé de purification du dichloro-1,1 fluoro-1 éthane, permettant notamment d'éliminer les impuretés insaturées telles que le dichloro-1,1 éthylène et le dichloroacétylène. Selon ce procédé, on traite le dichloro-1,1 fluoro-1 éthane brut avec du chlore, d'un hydracide ou d'un mélange de ceux-ci, ce traitement étant réalisé en présence d'un acide de Lewis ou, seulement dans le cas du chlore, par catalyse photochimique.

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