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Hydrophilic, highly swellable hydrogels

  • US 5,331,059 A
  • Filed: 11/12/1992
  • Issued: 07/19/1994
  • Est. Priority Date: 11/22/1991
  • Status: Expired due to Fees
First Claim
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1. Hydrophilic, highly swellable hydrogel derived from hydrophilic monomers in (co)polymerized form or derived from graft (co)polymers, in which the hydrogel is further surface modified by means of a mixture ofA) one or more diglycidyl phosphonates of general formula I ##STR9## in which R is alkyl, alkenyl or aryl, each of which is optionally substituted, andB) one or more other reactive compounds which are capable of reacting with the functional groups in the polymer.

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