PRODUCTION OF UNSATURATED CARBOXYLIC ACID ESTER

摘要

PROBLEM TO BE SOLVED: To provide a process for producing an unsaturated carboxylic acid ester in high selectivity while solving the problems inherent to the process for producing an unsaturated carboxylic acid ester by the esterification reaction of an unsaturated carboxylic acid with an alcohol such as the waste water treatment in the case of using an acid catalyst and the insufficient reaction rate in the use of an ion exchange resin. SOLUTION: A solid superstrong acid containing zirconium is used as an esterification catalyst in the production of an unsaturated carboxylic acid ester. The zirconium-containing solid superstrong acid is preferably a reaction product of zirconium hydroxide with sulfuric acid. The alcohol is a 1-8C aliphatic monohydric alcohol and the unsaturated carboxylic acid is acrylic acid or methacrylic acid.