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Hydrogel composites and superporous hydrogel composites having fast swelling, high mechanical strength, and superabsorbent properties

  • US 6,271,278 B1
  • Filed: 05/13/1997
  • Issued: 08/07/2001
  • Est. Priority Date: 05/13/1997
  • Status: Expired due to Fees
First Claim
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1. A hydrogel composite comprising an interpenetrating network of a crosslinked polymer and particles of a disintegrant, wherein:

  • said crosslinked polymer is formed from at least one ethylenically-unsaturated monomer and a multi-olefinic crosslinking agent; and

    said disintegrant is at least one of (i) a crosslinked natural or synthetic polyelectrolyte, (ii) a crosslinked neutral hydrophilic polymer, (iii) a non-crosslinked natural or synthetic polyelectrolyte having a particulate shape, (iv) a non-crosslinked neutral hydrophilic polymer having a particulate shape, or (v) a porous inorganic material that provides wicking by capillary forces.

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