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Method of producing a reactive coating by after-glow plasma polymerization

  • US 6,436,481 B1
  • Filed: 06/22/1999
  • Issued: 08/20/2002
  • Est. Priority Date: 12/23/1996
  • Status: Expired due to Fees
First Claim
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1. A method of preparing an article comprising a substrate with a polymer coating carrying reactive groups on its surface, wherein said polymeric coating comprises repeating units derived from a polymerizable unsaturated compound carrying a reactive group selected from the group consisting of isocyanato, isothiocyanato, glycidyl, anhydride, azlactone and lactone groups, wherein in said coating the concentration of said reactive groups is, based on spin label determination by ESR spectroscopy, in a range of 0.2-20·

  • 10−

    9 Mol spin/cm2, wherein said coating is obtained by carrying out an after-glow plasma-induced polymerization of a polymerizable unsaturated compound carrying a reactive group selected from the group consisting of isocyanato, isothiocyanato, glycidyl, anhydride, azlactone and lactone groups on a substrate wherein the substrate is positioned at a distance of 4 to 40 cm and an inlet for said polymerizable unsaturated compound at a distance of 3 to 35 cm downstream outside of a plasma zone.

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