Multilayer optical film layer comprising blend of methyl methacrylate polymer and styrene acrylonitrile polymer
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United States of America Patent
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Jun 18, 2013
Grant Date -
May 12, 2011
app pub date -
Jul 1, 2009
filing date -
Jul 16, 2008
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Abstract
Presently described are multilayer optical films comprising an optical stack comprising at least one first birefringent optical layer; at least one (e.g. isotropic) second optical layer having a birefringence of less than 0.04 at 633 nm, and optionally at least one skin layer. The second layer, skin layer, or a combination thereof comprises a blend of at least one methyl methacrylate polymer and at least one styrene-acrylonitrile polymer.
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