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US 5,837,377 AGranted
Biomedical articles with ionically bonded polyelectrolyte coatings
AssigneeAdvanced Surface Technology, Inc.
InventorsMin-Shyan Sheu, Ih-Houng Loh
Life of this patent
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Abstract
A hydrophilic article for use in aqueous environments, including a substrate, an ionic polymeric layer on said substrate, and a disordered polyelectrolyte coating ionically bonded to said polymeric layer.
Claims15
A hydrophilic biomedical article for use with aqueous environments, comprising
- a biomedical substrate;
- an ionic polymeric layer on said substrate;
- and
- a disordered polyelectrolyte coating consisting of a polyelectrolyte polymer selected from the group consisting of polyethyleneimine, polyaminoalkyl methacrylate, polyvinylpyridine, polylysine, polyacrylic acid, polymethacrylic acid, polysulfonic acid, polyvinyl sulfate, polyacrylamido-2-methyl-1-propanesulfonic acid, and polystyrene sulfonic acid, and being attached via ionic bonding to said polymeric layer;
- wherein the initial advancing water contact angle of said coating is less than 56.degree..
2 more elements
Dependencies are inferred from the claim text.