Process for producing bisphenol a

Abstract

The present invention provides a process for producing bisphenol A by reacting phenol with acetone, 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 the cation-exchange resin catalyst.

1 . A cation-exchange resin catalyst comprising 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.  
   
   
       2 . The cation-exchange resin catalyst according to  claim 1 , wherein the crystallinity is 5% or more.  
   
   
       3 . The cation-exchange resin catalyst according to  claim 1 , wherein the syndiotacticity of the polystyrene polymer is 70% or more.  
   
   
       4 . The cation-exchange resin catalyst according to  claim 1 , wherein the catalyst is used in the reaction of phenol and acetone to produce bisphenol A.  
   
   
       5 . A process for producing bisphenol A by reacting phenol with acetone, wherein the cation-exchange resin catalyst according to  claim 1  is used as a catalyst.