SUPERABSORBENT POLYMERS HAVING RADIATION ACTIVATABLE SURFACECROSS-LINKERS AND METHOD OF MAKING THEM

摘要

The present invention relates to superabsorbent polymer particles with improved surface cross-linking and their use in absorbent articles. The superabsorbent polymer particles of the present invention comprise a water- absorbing resin and the reaction product of a radiation activatable surface cross-linker wherein the reaction product of the radiation activatable surfa ce cross-linker is present at surfaces of the superabsorbent polymer particles. The radiation acitvatable surface cross-linker comprises at least two radiation activatable groups R, which are covalently bound to each other or to at least one spacer group S. Moreover, the invention relates to a process fo r making these superabsorbent polymer particles.