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VOC-free, low viscosity, LED-curable coating and method of application

  • US 9,598,607 B2
  • Filed: 02/20/2013
  • Issued: 03/21/2017
  • Est. Priority Date: 02/21/2012
  • Status: Expired due to Fees
First Claim
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1. A method of forming a coating on a surface, said method comprising:

  • providing a flowable composition comprisinga metal oxide composition comprising;

    silica nanoparticles, alumina nanoparticles, or both;

    an acrylate; and

    a photoinitiator selected from the group consisting of 2,4,6-trimethylbenzoyldiphenylphosphine oxide, bis (2,4,6-trimethylbenzoyl)-phenylphosphineoxide, 4-thiophenyl phenyl diphenyl sulfonium hexafluoroantimonate, 2-methyl-1-[4-(methylthio)-phenyl]-2-(4-morpholinyl)-1-propanone, and mixtures thereof;

    said flowable composition having a viscosity of less than about 200 cP and comprising less than about 5% by weight volatile organic compounds;

    applying a layer of said flowable composition to said surface; and

    exposing said layer to light having a wavelength of from about 320 nm to about 700 nm to form said coating.

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