METHOD FOR PRODUCING HIGH-QUALITY CYCLIC SULFONIC ACID ESTER

摘要

PROBLEM TO BE SOLVED: To provide a method for producing a high-quality cyclic sulfonic acid ester useful as a solvent component of an electrolyte in a lithium secondary battery, etc. SOLUTION: The method for producing the high-quality cyclic sulfonic acid ester comprises bringing the cyclic sulfonic acid ester into contact with a deacidifying agent selected from the group consisting of a compound of the hydrotalcite group and an anion exchange resin. The cyclic sulfonic acid ester is especially 1,3-propanesultone or 1,4-butanesultone. COPYRIGHT: (C)2004,JPO