Process for purifying hexafluoropropene dimers

Organic compounds -- part of the class 532-570 series – Organic compounds – Halogen containing

Reexamination Certificate

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C570S171000, C570S172000, C570S175000, C570S178000

Reexamination Certificate

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07053253

ABSTRACT:
Perfluoro-4-methyl-2-pentene containing the undesirable perfluoro-2-methyl-2-pentene may be purified by contacting the mixture with at least a stoichiometric equivalent of an aqueous inorganic base (relative to the perfluoro-2-methyl-2-pentene), in the presence of a polar solvent.

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