Water-swellable hybrid material with inorganic additives and process for its preparation

It is a superabsorbent from homopolymers or copolymers, cross-linked described polyacrylates containing polymer-bound, ground Minerals as dietary fiber, preferably or mainly finely ground quartz sand, clay and / or shale, and optionally Other inorganic and organic additives, the weight ratios the polyacrylates to the milled organic and / or inorganic Additives between 1: 99 and 99: 1 and the superabsorbent is preferably present in granular form.