A PROCESS FOR THE PRODUCTION OF A SUPERABSORBENT POLYMER

摘要

The present invention relates to a process for the production of a superabsorbent polymer comprising: (a) preparing an aqueous mixture of monomers selected to provide after polymerization a superabsorbent polymer, (b) feeding said monomer mixture to a reactor, (c) subjecting the aqueous monomer mixture in the reactor to free-radical polymerization to obtain a superabsorbent polymer gel, and (d) removing the superabsorbent polymer from the reactor, (e) working-up the superabsorbent polymer removed from the reactor to obtain a final product, whereby a basic aqueous medium comprising carbonate and/or hydrogen carbonate is fed to the superabsorbent polymer gel.