Exterior window film
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United States of America Patent
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Apr 5, 2016
Grant Date -
Feb 3, 2011
app pub date -
Jan 8, 2009
filing date -
Jan 11, 2008
priority date (Note) -
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Abstract
A transparent exterior window film composite comprising a base sheet material having an outer PET (polyethylene terephthalate) film layer which has been surface treated to elevate adhesion thereto and which is impregnated with an ultra violet light absorber (UVA), the treated surface being coated with a UV stabilized acrylic polymer or co-polymer undercoat having a UV stabilized hard coat layer thereon formed from at least one aliphatic urethane acrylate oligomer and at least one multifunctional acrylate monomer, the undercoat layer having a thickness which is at least as thick as the hard coat.
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