METHOD FOR PRODUCING WATER-ABSORBENT POLYMER PARTICLES WITH A HIGHER PERMEABILITY BY POLYMERISING DROPLETS OF A MONOMER SOLUTION

摘要

A PROCESS FOR PREPARING WATER-ABSORBING POLYMER BEADS WITH HIGH PERMEABILITY BY POLYMERIZING DROPLETS OF A MONOMER SOLUTION IN A GAS PHASE SURROUNDING THE DROPLETS, WHEREIN THE MONOMER SOLUTION COMPRISES AT LEAST 0.5% BY WEIGHT OF A CROSSLINKER, BASED ON THE MONOMER, THE POLYMERIZATION IN THE DROPLET TAKES PLACE IN HOMOGENEOUS PHASE, AND THE POLYMER BEADS HAVE A MEAN DIAMETER OF AT LEAST 150 ?M.