An electrolyte for electrolytic capacitor.

摘要

An electrolyte for electrolytic capacitor containing within an aprotic solvent an alkyl quarternary ammonium salt of enol-form of 1, 3-diketone compound as solute.

An electrolyte for electrolytic capacitor according to the invention may conveniently be prepared by adding one equivalent amount of enol-form of 1, 3-diketone compound to a methylene chloride solution of alkyl ammonium hydrogen-sulfate for reaction with subsequent addition to two equivalent amounts of alkali hydroxide. A deposit is removed from the reaction product with subsequent vacuum drying to obtain an anhydrous salt and then dissolving said anhydrous salt to an aprotic solvent until a desired conductivity is obtained, for example, as an approximately 10% by weight solution.