A superporous hydrogel composite is formed by polymerizing one or more ethylenically-unsaturated monomers, and a multiolefinic crosslinking agent, in the presence of particles of a disintegrant and a blowing agent. The disintegrant, which rapidly absorbs water, serves to greatly increase the mechanical...http://www.google.fr/patents/US6271278?utm_source=gb-gplus-shareBrevet US6271278 - Hydrogel composites and superporous hydrogel composites having fast swelling, high mechanical strength, and superabsorbent properties
Hydrogel composites and superporous hydrogel composites having fast swelling ...
