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Biodegradable, water-resistant polymer material

  • US 5,733,994 A
  • Filed: 11/26/1996
  • Issued: 03/31/1998
  • Est. Priority Date: 03/30/1992
  • Status: Expired due to Fees
First Claim
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1. Biodegradable, water resistant polymer material formed in a layer or film of predetermined thickness and produced by a process comprising the steps ofa. at least partially derivatizing polysaccharides and/or polypeptides at their hydroxyl, amino, imino, thiol and/or carboxyl groups in a non-radical reaction with an agent including cross-linkable groups to form an uncross-linked reaction product andb. converting the uncross-linked reaction product to form a product of cross-linking reaction by cross-linking the cross-linkable groups, whereinc. said material biodegrades within a reasonable length of time.

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