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Hydrogel-forming, self-solvating absorbable polyester copolymers, and methods for use thereof

  • US 6,413,539 B1
  • Filed: 01/29/1998
  • Issued: 07/02/2002
  • Est. Priority Date: 10/31/1996
  • Status: Expired due to Term
First Claim
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1. A hydrogel-forming, self-solvating absorbable polyester copolymer capable of selective, segmental association into a compliant hydrogel mass on contact with an aqueous environment, said copolymer comprising:

  • a hydrophobic polyester block X and a hydrophilic block Y, said blocks X and Y being covalently bonded together in an arrangement selected from the group consisting of X-Y-X, (X-Y)n, and branched structures thereof;

    said hydrophobic block comprising greater than 50% of the mass of said copolymer and derived front a process selected from the group consisting of ring-opening of a cyclic carbonate and step-growth polymerization of an alkylene carbonate.

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