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Forming clear, wettable silicone hydrogel articles without surface treatments

  • US 8,158,695 B2
  • Filed: 03/05/2004
  • Issued: 04/17/2012
  • Est. Priority Date: 09/06/2002
  • Status: Active Grant
First Claim
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1. A composition comprising:

  • at least one silicone containing component,at least one hydrophilic component,at least one high molecular weight hydrophilic polymer, andat least one diluent having an alpha value of between about 0.05 and about 1 and a Hansen solubility parameter, δ

    p, of less than about 10, wherein the composition forms a clear blend at a selected reaction temperature, wherein the reaction temperature is up to about 75C., and wherein the composition further comprises at least one silicone containing compatibilizing component in an amount insufficient to compatibilize the blend absent the diluent.

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