| abstract |
Polyfluorination of general formula (I) X-CF 2 O (CF 2 O) m- (CF 2 CF 2 O) n -CF 2 X as flame retardant in solvent mixture for conductive salts in rechargeable battery electrolyte systems The use of polyethers or mixtures thereof is disclosed, wherein X is H, F, C1 to C5-alkyl, or partially fluorinated or perfluorinated C1 to C5-alkyl, or R is C1 to C5-alkyl , COOR representing C1 to C5-alkyl, partially fluorinated or perfluorinated, or R represents OR to represent C1 to C5-alkyl, C1 to C5-alkyl, partially fluorinated or perfluorinated, and m and n are The number of 0-5 is shown.n n n Polyfluorinated polyether, used |