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Wear-resistant polymeric articles and methods of making the same

  • US 6,582,823 B1
  • Filed: 04/30/1999
  • Issued: 06/24/2003
  • Est. Priority Date: 04/30/1999
  • Status: Expired due to Fees
First Claim
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1. A substantially optically transparent article having a wear-resistant surface, comprising:

  • a substantially optically transparent polymeric substrate having a hardened surface portion;

    a hard antiabrasive interconnecting layer formed on said surface portion by the process of vacuum deposition of feed compounds and comprising (i) an SiOxHy layer formed on said surface portion and (ii) an SiOxCyHz layer formed on said SiOxHy layer; and

    a lubricious fluoropolyether coating layer bonded to said interconnecting layer by the process of heating or subjecting said article to ultraviolet radiation;

    with said hard antiabrasive interconnecting layer and said lubricious fluoropolyether coating layer together forming said wear-resistant surface;

    said wear-resistant surface having a Bayer Index of at least about 20; and

    said wear-resistant surface having a contact angle after isopropanol wash at room temperature for ten minutes of at least about 45 degrees.

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