Process for producing fluorinated alcohol

Details Process for producing fluorinated alcohol Process for producing fluorinated alcohol

C - Chemistry, Metallurgy

07

C

C07C 29/80 (2006.01) C07C 29/44 (2006.01) C07C 31/38 (2006.01)

Patent

CA 2420375

A process for producing a high-purity fluorinated alcohol in a satisfactory purification yield. The process comprises reacting methanol with tetrafluoroethylene or hexafluoropropylene in the presence of an alkyl peroxide to produce a fluorinated alcohol, wherein the liquid reaction mixture obtained after completion of the reaction is distilled in the presence of both water and HF to separate the mixture into a fraction containing an alcohol derived from the peroxide and a bottom containing the fluorinated alcohol and the bottom is purified to recover the fluorinated alcohol.

L'invention concerne un procédé pour produire un alcool fluoré de grande pureté avec un rendement de purification satisfaisant. Ce procédé consiste à faire réagir du méthanol avec du tétrafluoroéthylène ou de l'hexafluoropropylène en présence d'un peroxyde d'alkyle pour produire un alcool fluoré. Le mélange réactionnel liquide obtenu après la réaction est distillé en présence d'eau et d'acide fluorhydrique pour permettre de séparer le mélange en une fraction contenant un alcool dérivé du peroxyde et un résidu contenant l'alcool fluoré. Le résidu est purifié pour permettre de récupérer l'alcool fluoré.

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