The invention relates to absorptive, crosslinked polymers which are based on partly neutralized, monoethylenically unsaturated monomers carrying acid groups, and have improved properties, in particular in respect of their capacity for transportation of liquids in the swollen state, and which has a high...http://www.google.fr/patents/US7795345?utm_source=gb-gplus-shareBrevet US7795345 - Superabsorbent polymer with high permeability
