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Process for surface modifying substrates and modified substrates resulting therefrom

  • US 6,852,353 B2
  • Filed: 07/23/2001
  • Issued: 02/08/2005
  • Est. Priority Date: 08/24/2000
  • Status: Expired due to Term
First Claim
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1. A method for modifying the surface of an article, said method comprising the steps of:

  • a) depositing at least a polyelectrolytic tie layer onto the surface of said article, wherein said polyelectrolytic tie layer is composed of (i) one layer of a first polyionic material which is adsorbed onto, heteropolarly bound onto, and/or entraped on the surface of the article or (ii) at least one layer of the first polyionic material which is adsorbed onto, heteropolarly bound onto, and/or entraped on the surface of the article and at least one layer of a second polyionic material having charges opposite of the charges of the first polyionic material, wherein said first and second polyionic materials have functional group which provide reactive sites; and

    b) covalently linking a layer of an active agent to said reactive sites, wherein the active agent is an anti-microbial agent or a polymerization initiator capable of initiating a radical polymerization of ethylenically unsaturated compounds.

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