C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
C07C 41/42 (2006.01) C07C 41/14 (2006.01) C07C 43/12 (2006.01)
Patent
CA 2432598
A process for the purification of fluoromethyl hexafluoroisopropyl ether which involves contacting a crude composition fluoromethyl hexafluoroisopropyl ether and hexafluoroisopropyl alcohol with a modifier to modify the vapour pressure of the ether and/or the alcohol. The difference in vapour pressure of the ether and the alcohol increases relative to the difference in vapour pressure of the ether and alcohol in the absence of the modifier and enables separation of the ether from the alcohol. The modifier suitably is ammonia and/or an amine.
La présente invention concerne un procédé de purification d'éther de fluorométhyl hexafluoroisopropyl selon lequel on met en contact une composition brute d'éther de fluorométhyl hexafluoroisopropyl et d'alcool d'hexafluoroisopropyl avec un agent de modification afin de modifier la pression de vapeur de l'éther et/ou de l'alcool. La différence dans la pression de vapeur de l'éther et de l'alcool augmente par rapport à la différence dans la pression de vapeur de l'éther et de l'alcool en l'absence d'agent de modification et permet à l'éther de se séparer de l'alcool. Un agent de modification approprié est l'ammoniaque et/ou une amine.
Draper Lee Colin
Sharratt Andrew Paul
Ineos Fluor Holdings Limited
Smart & Biggar
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