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Hydrophilic, water-swellable, crosslinked, copolymer gel and prosthesis employing same

  • US 4,138,382 A
  • Filed: 05/01/1978
  • Issued: 02/06/1979
  • Est. Priority Date: 05/01/1978
  • Status: Expired due to Term
First Claim
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1. A water swellable hydrophilic gel comprising a crosslinked copolymer of a water soluble vinylic constituent in aqueous solution and an olefinic hydrolyzable silane having the formula Xm Rn Si(OR'"'"')4-(n+m) wherein X is an unsaturated group, m is at least 1 and R'"'"' and R are organic radicals, n being 0 to 2, wherein the volume ratio of water to vinylic constituent is from about 0.5 to about 10 while the mole ratio of vinylic constituent to hydrolyzable silane is from about 50 to about 600, wherein copolymerization is via the unsaturated groups and wherein crosslinking is by condensation reactions.

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