Process for preparing bisphenol using a catalyst based on a copolymer of polystyrene / divinyl benzene sulfonated.

摘要

A process for catalyzing condensation reactions between reactants selected from phenols and aldehydes or ketones to produce one or more bisphenols, which comprises contacting the phenols and aldehydes or ketones with resin catalyst sulfonated crosslinked ion exchange comprising polymerized monomer units (a) from 0, 1 to 10 weight percent of one or more polyvinylaromatic monomers and (b) between 90 and 99, 9 weight percent of one or more monounsaturated vinylaromatic monomers; wherein the catalyst contains 0, 1 to 10 millimoles of sulfone bridges per gram of dry catalyst and has an acid capacity of 4, 0 to 6, 0 millimoles of sulfonic acid groups per gram dry catalyst.