PROCESS FOR MAKING COATED, WATER-SWELLABLE HYDROGEL MICROSPHERES

摘要

A process for coating water-swellable hydrogel microspheres with various coating materials is described. The coating process described herein is a fluidized bed process, which utilizes inert, cofluidization particles to aid the fluidization of the microspheres. The use of the cofluidization particles increases the efficiency of the coating process and improves the quality of the coating obtained.