Journal of Coatings Technology

, Volume 72, Issue 903, pp 77–79 | Cite as

Zero VOC sunlight curable coatings

  • Huilei Zhang
  • John L. Massingill
  • James T. Woo
Short Communications

Abstract

Curing of one-pack epoxy coatings by exposure to visible light for a few hours would be a useful innovation for architectural, industrial, and maintenance (AIM) coatings as well as for any large objects that would be difficult to heat but easy to shine a light on.

Zero VOC, low viscosity, sunlight curable clearcoats can be formulated with cycloaliphatic epoxy compounds as well as aromatic glycidyl ethers. Cure is achieved with a cationic photoinitiator that generates a strong acid when exposed to sunlight for a couple of hours. The clearcoats had good hardness, adhesion, and solvent resistance. No cure was achieved with incandescent light or with fluorescent light, which contains only 0.1% UV light as compared to sunlight that has 5% UV light. This work indicates that zero VOC one pack clearcoat epoxy formulations for AIM applications and large objects could be cured by light racks that generate the spectrum of sunlight.

Keywords

Epoxy Epoxide Vinyl Ether Cationic Polymerization Incandescent Light 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.
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Copyright information

© Springer Science+Business Media 2000

Authors and Affiliations

  • Huilei Zhang
    • 1
  • John L. Massingill
    • 1
  • James T. Woo
    • 1
  1. 1.Coatings Research InstituteEastern Michigan UniversityYpsilanti

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