New Sunscreens Based on Particles Prepared from Higher Aldehydes and Phenols

Case ID:

This invention consists of particles that can be used as sunscreens prepared by the copolymerization of phenols with aromatic and conjugated aldehydes like cinnamaldehyde or benzaldehyde. These particles made of bio-based materials can be dispersed in liquid and function as thermosets for sun-blocking purposes.


Sunscreen products in the market today are typically made of potentially harmful chemicals, including avobenzone, which releases cancer-causing free radicals, and oxybenzone, which has estrogenic properties highly absorbed by human skin. Instead of protecting us from sun damages, sunscreen products may actually increase cancer risks. This led the inventors to create a non-leaching sunscreen that is safe for human use.



  • Used for making sunscreen and other products


  • Inexpensive
  • Non-toxic
  • Bio-based materials
Patent Information:
Contact For More Information:
Tariq Ahmed
Sr Licensing Manager, College of Engineering
The University of Arizona
Lead Inventor(s):
Douglas Loy
Robb Bagge
Nanayakkarawasan Pallage Nanayakkara