New Technology to Forestall the Onset of Yellowing in Clear Polystyrene (and Possibly Other Clear Polymers and Acrylics) by a Time Factor of at Least 50% 

DynaTint Corporation, LLC (http://www.dynatint.com) has developed a spin-off technology that can retard the onset of any trace of yellowing in polystyrene by at least 50% in time, i.e., if yellowing would normally occur in outdoor use at 10 years, then utilizing our technology, one will not see any yellowing for at least 15 years in actual outdoor use. This is not accomplished by using any antioxidants, HALS or UV blockers that normally affect the polymer's structure in an adverse way.

DynaTint has begun to market this technology to major plastic resin manufacturers.