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https://drivepatents.com/patents/1082303 · 24 Nov 2004
A process for synthesizing an olefinic composition represented by the formula: CF2=CF(CF2CF2)nSO2F where n = 1 to 5 comprising (a) contacting CF2ClCFCl(CF2CF2)nI, wherein n = 1 to 5, with Na2S2O4 and NaHCO3 in a mixture of water and an aprotic polar solven...
https://drivepatents.com/patents/1091200 · 17 Dec 2003
A process for forming an ionizable composition, the process comprising: contacting, at a temperature in the range of 0-85 DEG C, a composition comprising the functional group -(CF2CF2)n-SO2F, where n is 1 to 5, with a solution of an alkali metal salt, the ...