* Coating heals its own scratches in sunlight
* Could be used on cars, packaging
* Can take less than one hour
By Julie Steenhuysen
CHICAGO, March 12 (Reuters) - Scientists have developed a polyurethane coating that heals its own scratches when exposed to sunlight, offering the promise of scratch-free cars and other products, researchers said on Thursday.
"We developed a polymeric material that is able to repair itself by exposure to the sun," ...
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