Particulate and Film Polymeric Dihydropyridazines as Sunscreens with Inherent Antioxidant Properties

Case ID:

This invention is a polymeric sunscreen that can be applied either as a film or as particles to be suspended in either water or oil.


Both UVB and UVA wavelengths penetrate the atmosphere, inducing skin cancers, eye damage and aging if not properly protected or treated. Common commercial sunscreens can block around 93% of UVB and UVA rays, depending on brand. Through the utilization of alkenes, this invention improves upon common commercial sunscreens by absorbing up to 400nm of UV rays.



  • Sunscreen
  • Thin film coating on surfaces


  • Protects skin and hair from UV rays
  • Protects paints, plastics, woods or other UV sensitive surfaces
  • Antioxidant characteristics extend lifetime of material
  • Fluorescence can be used to determine if screen is functioning
Patent Information:
Contact For More Information:
Tariq Ahmed
Sr Licensing Manager, College of Engineering
The University of Arizona
Lead Inventor(s):
Douglas Loy
Wenmo Sun
Robb Bagge
Nanayakkarawasan Pallage Nanayakkara