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Swellable hydrogel-forming polymers having a low fraction of fines

  • US 7,553,903 B2
  • Filed: 12/17/2004
  • Issued: 06/30/2009
  • Est. Priority Date: 12/19/2003
  • Status: Expired due to Fees
First Claim
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1. Swellable hydrogel-forming polymer particles comprising (a) a swellable hydrogel-forming polymer and (b) up to 10% by weight, based on the swellable hydrogel-forming polymer particles, of at least one hydrophilic polymer having a dendritic structure, wherein the swellable hydrogel-forming polymer particles have a particle size in the range of 45 to 1000 μ

  • m.

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