Optically active film composite
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United States of America Patent
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Dec 16, 2003
Grant Date -
Jul 11, 2002
app pub date -
Jun 13, 2001
filing date -
Nov 14, 2000
priority date (Note) -
In Force
status (Latency Note)
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Abstract
An optically active film composite including a polymeric film substrate coated with a layer of resin having a thickness of less than 6 microns and a pencil hardness of at least 2H, and which includes 30-60% by weight of nanoparticles of ATO or ITO, and nanoparticles of a second metallic compound being an inorganic compound and absorbing light having a wavelength in the range of 700-1100 nm. The composite preferably has a VLT of at least 50% and a %TSER of at least 35% with a weighted UV absorption of less than 1%.
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