University of Arizona researchers have developed sun-protective polymeric particles using a micro emulsion polymerization by nucleation approach.

About

Sunscreens Based on Phenolic-Formaldehyde Particles Tech ID: UA16-230 Invention: University of Arizona researchers have developed sun-protective polymeric particles using a micro emulsion polymerization by nucleation approach. The resulting resorcinol-formaldehyde is red to brown in color with strong absorption of UVA and UVB radiation, making it an ideal material for sunscreen. Resorcinol-formaldehyde has been widely used in endodontic treatments, commonly known as "Russian Red." Background: 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.

Key Benefits

Inexpensive Abundant raw materials Non-leaching thermoset, as opposed to highly leaching toxic chemical compounds

Applications

Used for making sunscreen and other skin products Thermosets with sun-blocking effects

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