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US 2003/0143335 A1Published application
Process for surface modifying substrates and modified substrates resulting therefrom
AssigneeNovartis AG
InventorsYongxing Qiu, Lynn Cook Winterton, John Martin Lally
Life of this patent
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Abstract
The present invention generally relates to a method of modifying the surface of substrates such as contact lenses and other biomedical articles by at least partially coating the surfaces of such substrates with a polymeric tie layer having reactive sites. Various other moieties may then be chemically attached to the article surface by reaction of the other moieties with the reactive sites through classical chemical attachment mechanisms.
Claims16
A method for modifying the surface of an article, said method comprising the steps of:
- a) depositing at least a partial functionalized polyelectrolytic tie layer onto the surface of said article so as to create a surface having reactive sites;
- and
- b) chemically attaching an active agent to said reactive sites.
Dependencies are inferred from the claim text.