Superabsorbent polymer particles with improved surface cross-linking and their use in absorbent articles. The superabsorbent polymer particles comprise polymer chain segments, wherein at least a part of the polymer chain segments are covalently cross-linked to each other and wherein at least a part of...http://www.google.es/patents/US7871640?utm_source=gb-gplus-sharePatente US7871640 - Surface cross-linked superabsorbent polymer particles and methods of making them
Surface cross-linked superabsorbent polymer particles and methods of making them