C - Chemistry – Metallurgy – 07 – D
Patent
C - Chemistry, Metallurgy
07
D
C07D 317/42 (2006.01) C07C 68/08 (2006.01)
Patent
CA 2717841
Mixtures comprising organic carbonates (carbonates not substituted by fluorine, but especially fluorosubstituted organic carbonates) depleted in HF can be obtained from respective mixtures with a higher HF content by a step of stripping the mixtures with inert gas. For example, reaction mixtures comprising fluoroethylene carbonate and HF can be treated in this way. The organic carbonate depleted in HF can be distilled to obtain highly purified organic carbonate.
Selon l'invention, des mélanges comprenant des carbonates organiques (des carbonates non substitués par du fluor, mais particulièrement des carbonates organiques substitués par fluoro) appauvris en HF peuvent être obtenus à partir de mélanges correspondants présentant une teneur en HF supérieure par une étape de désorption des mélanges avec un gaz inerte. Par exemple, des mélanges réactionnels comprenant du carbonate de fluoroéthylène et HF peuvent être traités de cette manière. Le carbonate organique appauvri en HF peut être distillé pour obtenir un carbonate organique hautement purifié.
Krueger Harald
Lambert Alain
Olschimke Jens
Schwerdt Phillip
Seffer Dirk
Robic
Solvay Fluor Gmbh
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