Water-absorbing polymers with supramolecular hollow molecules, method for producing them and use of the same

Polymers based on crosslinked monomers bearing partially neutralized acid groups, the surface of which has been surface crosslinked folling polymerization, obtained by a process wherein

• an aqueous solution containing partially neutralized acrylic acid is converted to a gel in the presence of crosslinkers and optional polymer additives;
• the gel is subsequently dried, milled and screened to the desired particle size;
• the polymer is surface cross-linked before or after the gel has been dried wherein cyclodextrines or derivatives thereof as a substance or dissolved in a solvent
• are added directly to the aqueous monomer solution prior to the polymerization thereof;
• are applied to a non-dried polymer gel;
• are added onto the crushed and dried absorbent material during surface corsslinking of the polymer product;
• are applied onto the crushed, already surface crosslinked polymer product.

A polymer comprising polymerized units of one or more monomers having at least partially neutralized acid groups, wherein the polymer is a crosslinked polymer obtained by

• polymerizing an aqueous solution comprising at least partially neutralized acrylic acid and one or more crosslinkers, to form a gel,
• drying the gel,
• milling and screening the dried gel,
• adding one or more cyclodextrins or derivatives thereof as a solid or as a solution in a solvent, and
• surface crosslinking the gel.