Patent EP-0850920-A2 (EP)
Inventor: ARMAND MICHEL
IPC: H01M8/00
Filed: 1997-12-30
Abstract: Ionic compounds consisting of an amide or one of its salts comprising an anionic part in association with at least one cationic part M<+>m in a number sufficient to provide electronic neutrality to the compound, wherein M = hydroxonium, nitrosonium NO<+>, ammonium -NH4<+>, a metallic cation with a valency m, an organic cation with a valency m, or an organometallic cation having a valency m, and the anionic part corresponds to the formula Rf-S(O)x-N<->-Z in which -S(O)x- = sulphonyl group -SO2- or sulphinyl group -SO-; Rf = a halogen or a perhalogenated alkyl, alkylaryl, oxa-alkyl, aza-alkyl or thia-alkyl or a radical of formula RACF2-, RACF2CF2-, RaCF2CF(CF3)- or CF3C(Ra)F in which Ra = a non-perhalogenated organic radical; Z = an electron-attracting radical having a Hammett parameter at least equal to that of a phenyl radical and selected from (i) -CN, -NO2, -SCN, -N3, -CF3, R'FCH2- (R'f = perfluorinated group), fluoroalkyloxy group, or fluoroalkylthioxy group; (ii) radicals comprising one or more aromatic rings optionally containing at least one N, O, S or P atom, these rings optionally carrying condensed-on rings or at least one substituent selected from halogens, -CN, -NO2, -SCN, -N3, -CF3, CF3CH2-, CF2=CF-O-, CF2=CF-S-, perfluoroalkyl groups, fluoroalkyloxy groups, fluoroalkylthiooxy groups, alkyl radicals, alkenyl radicals, oxa-alkyl, oxa-alkenyl, azaalkyl, aza-alkenyl, thia-alkyl, thia-alkenyl, polymeric radicals, radicals with at least one cationic ionophoric group and/or at least one anionic ionophoric group; wherein a substituent Z may be a monovalent radical, part of a multivalent radical carrying several groups -Rf-S(O)x-N-, or a segment of a polymer; or Z = a radical Rd-Y- in which Y = a sulphonyl, sulphinyl or phosphoryl group and Rd is selected from (a) alkyl, alkenyl, aryl, arylalkyl, alkylaryl, alkenylaryl, alicyclic or heterocyclic radicals including polycyclic radicals; (b) alkyl or alkenyl radicals containing at least one ether, thioether, amine, imine, carboxyl, carbonyl, hydroxy, silyl, isocyanate or thioisocyanate group; (c) aryl, arylalkyl, arylalkenyl, alkylaryl or alkenylaryl radicals in which the aromatic rings and/or at least one substituent on the ring may contain heteroatoms such as N, O or S; (d) radicals containing condensed aromatic rings which may optionally contain at least one heteroatom selected from N, O or S; (e) halogenated alkyl, alkenyl, aryl, arylalkyl, alkylaryl or alkenylaryl radicals in which the number of C atoms carrying at least one halogen is at most equal to the number of non-halogenated C atoms, the C atom bonded to Y is non-halogenated if Y = -SO2-, and these groups may contain ether, thioether, amine, imine, carboxyl, carbonyl, hydroxy, silyl, isocyanate or thioisocyanate functional groups; (f) radicals RcC(R')(R")-O- in which Rc is a perfluoroalkyl radical and R' and R" independently = H or a radical as defined in (a), (b), (c) or (d) above; (g) radicals (Rb)2N- in which the radicals (Rb) (same or different) are as defined in (a), (b), (c), (d) and (e) above, one of the radicals Rb may = H or the two radicals Rb together with the N atom may complete a ring; (h) radicals constituting a polymer chain; or (i) radicals with one or more cationic ionophoric groups and/or one or more anionic ionophoric groups; provided that a substituent Rb may be a monovalent radical, part of a multivalent radical carrying several groups RFS(O)x-N-Y-, or a segment of a polymer; and that if Y = sulphonyl or carbonyl and Rd is a radical as defined in (A) then RF = RaCF2-, RACF2CF2-, RaCF2CF(CF3)-, CF3C(Ra)F- or 1-2 C perhaloalkyl group.