BIS(2-HALOETHYL)BENZENE SULFONIC ACID OR SALT THEREOF AND METHOD FOR PRODUCING THE SAME, AND METHOD FOR PRODUCING DI-VINYLBENZENE SULFONIC ACID USING BIS(2-HALOETHYL)BENZENE SULFONIC ACID AS PRECURSOR AND SALT THEREOF

摘要

PROBLEM TO BE SOLVED: To provide a method for producing di-vinylbenzene sulfonic acid which is a water-soluble crosslinkable monomer having excellent radical-polymerizability, chemical stability and cation exchangeability and extremely useful for the production of an ion exchange membrane or a fuel cell membrane or the like or a salt thereof, and to provide bis(2-haloethyl)benzene sulfonic acid which is a precursor of the di-vinylbenzene sulfonic acid and a method for producing the same.SOLUTION: There is provided a method for producing di-vinylbenzene sulfonic acid or a salt thereof represented by the formula (2) by radically adding hydrogen halide to di-vinylbenzene, followed by sulfonation to produce bis(2-haloethyl)benzene sulfonic acid and further followed by reaction with an alkali and vinylation.SELECTED DRAWING: None