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Biomedical devices containing internal wetting agents

  • US 8,450,387 B2
  • Filed: 03/30/2007
  • Issued: 05/28/2013
  • Est. Priority Date: 09/10/2001
  • Status: Active Grant
First Claim
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1. A silicone hydrogel contact lens having a water content of about 10 to about 60 weight % and an average tear film breakup time is at least about 7 seconds after about 7 days of wear, wherein said contact lens is formed from a reaction mixture comprising at least one hydrophilic monomer, high molecular weight hydrophilic polymer and a compatibilizing effective amount of hydroxyl-functionalized silicone-containing monomer selected from the group consisting of (3-methacryloxy-2-hydroxypropyloxy)propylbis(trimethylsiloxy)methylsilane, (2-methacryloxy-3-hydroxypropyloxy)propylbis(trimethylsiloxy)methylsilane, (3-methacryloxy-2-hydroxypropyloxy)propyltris(trimethylsiloxy)silane, bis-3-methacryloxy-2-hydroxypropyloxypropyl polydimethylsiloxane, 3-methacryloxy-2-(2-hydroxyethoxy)propyloxy)propylbis(trimethylsiloxy)methylsilane, N,N,N′

  • ,N′

    -tetrakis(3-methacryloxy-2-hydroxypropyl)-α



    -bis-3-aminopropyl-polydimethylsiloxane and mixtures thereof.

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