Purification of fluorinated dimethyl ethers

Details Purification of fluorinated dimethyl ethers Purification of fluorinated dimethyl ethers

C - Chemistry, Metallurgy

07

C

C07C 43/12 (2006.01) B01D 15/00 (2006.01) C07C 41/22 (2006.01) C07C 41/34 (2006.01) C07C 41/36 (2006.01)

Patent

CA 2220432

A process for the purification of bis(difluoromethyl)ether. Bis(difluoromethyl)ether is exposed to molecular sieves in order to reduce or completely remove impurities. In a further embodiment, the present invention optionally includes means for preferentially inhibiting the formation of CF2HOCC13 in the formation of bis(difluoromethyl)ether prior to exposing the bis(difluoromethyl)ether to the molecular sieves.

Ce procédé de purification d'éther de bis(difluorométhyle) consiste à faire passer celui-ci par des tamis moléculaires qui en réduisent ou en éliminent les impuretés. Dans une variante, ce procédé prévoit, à titre facultatif, un moyen permettant d'inhiber de préférence la formation de CF¿2?HOCC1¿3? lors de la formation de l'éther de bis(difluorométhyle), avant son passage par ces tamis moléculaires.

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