Process for producing bisphenol A
AssigneeMitsui Chemicals, Inc.
InventorsTakashi Terajima, Yuko Maruyama, Toshihiro Takai, Kenji Fujiwara
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Abstract
The present invention provides a process for producing bisphenol A by reacting phenol with actone, wherein reaction is performed at higher temperatures while maintaining high selectivity, and thus high productivity is obtained. The invention relates to a cation-exchange resin, wherein a cation-exchange group is introduced into a syndiotactic polystyrene polymer and the amount of acid is 0.8 milliequivalent/g or more, to a catalyst comprising the cation-exchange resin, and to a process for producing bisphenol A using a cation-exchange resin catalyst.
Claims11
A process for producing bisphenol A by reacting phenol with acetone in the presence of a cation-exchange resin catalyst, said cation-exchange resin catalyst comprising a cation-exchange resin, wherein the cation-exchange resin catalyst is a catalyst obtained by crystallizing a syndiotactic polystyrene polymer, which is obtained by copolymerization of a styrenic monomer and a polyvinyl aromatic monomer, and then introducing an acidic functional group into the polymer on an exterior surface of the polymer particle, the amount of acid is 0.8 milliequivalent/g or more and the crystallinity is from 10% to 50%.
Dependencies are inferred from the claim text.