| abstract |
The use of a cation exchange resin catalyst comprising a polystyrene polymer having (i) a syndiotacticity, in terms of racemic dyad, of 70% or more, (ii) a crystallinity of 5% or more, and ( iii) an acid cation exchange group introduced in an amount of 1.1 meq / g or more; in the reaction of phenol with acetone, producing bisphenol A. |