Antireflection film and method of producing same
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United States of America Patent
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Apr 14, 2020
Grant Date -
Jan 23, 2014
app pub date -
Sep 26, 2013
filing date -
Mar 28, 2011
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Abstract
Provided is an antireflection film obtained by laminating, in succession, a transparent substrate, a first layer, and a second layer having a lower refractive index than the refractive index of the first layer. The first layer is obtained by curing a film containing an ionizing radiation-curable material, a quaternary ammonium salt material, a leveling agent, and a solvent, and has a structure wherein a middle layer, hard coating layer and recoating layer are laminated in succession from the transparent substrate side. The recoating layer does not contain a quaternary ammonium salt. The hard coating layer contains a quaternary ammonium salt, and the concentration of the quaternary ammonium salt in the hard coating layer gradually increases from the middle layer side to the recoating layer side.
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