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In response to the increased levels of UV radiation being experienced worldwide, attention has shifted to the need for greater UV protection--not only in sunscreens for skin, according to technology Web site Yet2.com, but also other areas where UV degrades a material or coating such as paint.
In cosmetics, titanium dioxide and zinc oxide traditionally have been used as physical sunscreens but these inorganic materials can reportedly be expensive compared to chemical sunscreen alternatives; on the other hand, concerns are being raised about the long-term effects of chemical sunscreens. Thus, interest is returning to physical sunscreens, according to technology developer AmorePacific.
The company has developed a technology available for license that coats titanium dioxide and zinc oxide nanoparticles with a polymer so that the coating scatters the UV rather than requires inorganic compound to absorb the UV and radiate it in a secondary form. The same polymer technology also is said to help disperse the composite nanoparticles or microspheres within an emulsion and provide a more even coating or application, and also a reduction in the volume of the composite required. The company reports the same process can be used with other inorganic compounds.
The described technology is available for use in coatings, paints, plastics, ceramics, inks and fibers and could have applications in electronic materials, biomaterials and waste processing. This technology has been fully developed and commercialized by AmorePacific in the cosmetics field and is available for wider commercial exploitation under license. For more information, click here.