Preparation Method for Perfluoroalkane Sulfinate

In a method for obtaining an alkali metal perfluoroalkanesulfinate by reacting a perfluoroalkanesulfonyl halide with a sulfur-containing reducing agent in the presence of water, a reaction liquid containing the alkali metal sulfinate obtained after the reaction is concentrated till a specific concen...

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Bibliographic Details
Main Authors TAKENAKA YOICHI, KASHIWABA TAKASHI, NANMYO TSUTOMU
Format Patent
LanguageEnglish
Published 24.01.2013
Subjects
ACYCLIC OR CARBOCYCLIC COMPOUNDS
CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
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Summary:In a method for obtaining an alkali metal perfluoroalkanesulfinate by reacting a perfluoroalkanesulfonyl halide with a sulfur-containing reducing agent in the presence of water, a reaction liquid containing the alkali metal sulfinate obtained after the reaction is concentrated till a specific concentration, thereby inorganic salts, which are impurities in the solution, are precipitated and removed, and a filtrate after removing the inorganic salts is subjected to an operation such as concentration and drying, thereby obtaining the target alkali metal perfluorosulfinate with a high purity and a good operability. Furthermore, an organic solvent for extraction becomes unnecessary. Therefore, it is possible to greatly reduce wastes.
Bibliography:Application Number: US201113574138