| abstract |
An electrolytic capacitor has a substantially non-aqueous liquid electrolyte comprising a cis isomer of an asymmetrical, unsaturated fatty acid of the formula <IMAGE> and salts thereof in which formula R1 and R2 each represents a H atom, a substituted or unsubstituted C1-3 lower alkyl group and R3 and R4 each represents a OH group or an amino group with the proviso that R1 and R2 do not both represent the same atom or group. The solvent comprises a glycol, a N,N-C1-C3 dialkyl amide which has H or from 1 to 3 carbon atoms in the acid moiety, an alkyl amine, gamma -butyrolactone, gamma - valerolactone or N-methylpyrrolidine. |