PROCESS FOR PREPARING PERFLUOROALKOXYSULPHONIC COMPOUNDS
A process for preparing perfluoroalkoxysulphonic compounds having formula: R f ~ OC2F4 -SO2X)p (I) wherein R f represents a perfluoroalkyl or perfluoroethereal group, X represents F, OH or OM, in which M is an alkaline cation, alkaline-earth cation, or X represents NR1R2, in which R1 and R2, indepen...
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Main Authors | , , |
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Format | Patent |
Language | English French |
Published |
10.12.2002
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Edition | 5 |
Subjects | |
Online Access | Get full text |
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Summary: | A process for preparing perfluoroalkoxysulphonic compounds having formula: R f ~ OC2F4 -SO2X)p (I) wherein R f represents a perfluoroalkyl or perfluoroethereal group, X represents F, OH or OM, in which M is an alkaline cation, alkaline-earth cation, or X represents NR1R2, in which R1 and R2, independently of each other, represent H or an alkyl group containing from 1 to 5 carbon atom and p is a number selected from 1 to 2, characterized in that the perfluoro vinyl sulphonyl fluoride of formula (II) CF2 = CF-SO2F is reacted with a hypofluorite of formula (III): R f (OF) r (III) wherein R f is the same as defined above, and r represents 1 or 2, optionally in an inert solvent, at a temperature approximately ranging from -140°C to +40°C, and that, if so desired, from the compound of formula (I) so obtained in which X=F, the corresponding derivatives, in which X has the other meanings defined above, are obtained by means of conventional techniques. A few subclasses of compounds (I) are new per se. The derivatives are utilized as polymerization catalysts, surfactants, electrolytes in electric generators. |
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Bibliography: | Application Number: CA19912046949 |