Method for producing purified ammonium salt of fluorinated...

Details Method for producing purified ammonium salt of fluorinated... Method for producing purified ammonium salt of fluorinated...

2011-08-02

2011-08-02

Saeed, Kamal (Department: 1626)

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C548S951000, C544S005000, C564S102000

Reexamination Certificate

active

07989635

ABSTRACT:
Methods for preparing an ammonium salt and a lithium salt of a fluorinated bis-sulfonylimide by a practical and efficient method with a high yield with a small number of steps. Further, a high purity ammonium salt of a fluorinated bis-sulfonylimide useful for the method for producing a lithium salt is provided.A method for producing a purified particulate solid (II) of a salt represented by the formula (1), which comprises suspending a particulate solid (I) of a salt represented by the formula (1) in a solvent comprising an etheric oxygen atom-containing compound, and separating the solvent by filtration:in-line-formulae description="In-line Formulae" end="lead"?[HNR3]+[Q1-SO2—N—SO2-Q2]−  (1)in-line-formulae description="In-line Formulae" end="tail"?wherein each of R's which may be the same or different, is a hydrogen atom or a C1-10alkyl group, and each of Q1and Q2which are independent of each other, is a monovalent fluoroorganic group, or Q1and Q2together form a bivalent fluoroorganic group.

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