METHOD FOR PRODUCING WATER-ABSORBENT POLYMER PARTICLES BY THE POLYMERISATION OF DROPLETS OF A MONOMER SOLUTION

摘要

The invention relates to a method for producing water-absorbent polymer particles by the polymerisation of droplets of a monomer solution in a surrounding gas phase. According to the invention, the resultant polymer particles have a water content of at least 5 % by weight and are thermally re-treated in a fluidised state in the presence of water vapour at a temperature of at least 60°C.