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Interpenetrating polymer network hydrogel contact lenses

  • US 7,857,447 B2
  • Filed: 12/07/2006
  • Issued: 12/28/2010
  • Est. Priority Date: 10/05/2004
  • Status: Expired due to Fees
First Claim
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1. A contact lens, comprising:

  • an interpenetrating network hydrogel with a first hydrophilic network interpenetrated with a second hydrophilic network, wherein said first hydrophilic network is an entangled network of self-linked hydrophilic telechelic macromonomers covalently bonded to themselves or other of said macromonomers in said first network, wherein each of said hydrophilic telechelic macromonomers is a poly(ethylene) glycol (PEG) diacrylate or poly(ethylene) glycol (PEG) dimethacrylate based telechelic macromonomer, and wherein said second network is a network of crosslinked poly(acrylic) acid.

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