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

摘要

THE INVENTION RELATES TO A METHOD FOR PRODUCING WATER-ABSORBENT POLYMER PARTICLES WITH A HIGHER PERMEABILITY BY POLYMERISING DROPLETS OF A MONOMER SOLUTION, CONTAINING MONOMERS WITH ACID GROUPS, IN A GAS PHASE SURROUNDING THE DROPLETS. THE MONOMER SOLUTION CONTAINS POLYVALENT CATIONS AND THE POLYMER PARTICLES HAVE AN AVERAGE DIAMETER OF AT LEAST 150 µM.