Method of preserving sulfonic acid-type cation-exchange resin modified with thiol-containing amine compound

摘要

The present invention aims at inhibiting a lowering in the modification ratio of a modified cation-exchange resin, in which part of the sulfonic acid groups have been modified with a thiol-containing amine compound and which is employed as a catalyst for producing bisphenol, during preservation. In the present invention, a modified cation-exchange resin is packed together with water into a container while regulating the surface area of the container to 0.5 m<2 >or less per liter of the resin and then the container is sealed up so that the resin is preserved in a state of being soaked in water.