MULTI-LAYERED PHOTOCHROMIC SHEET AND PHOTOCHROMIC GLASS PREPARED THEREFROM
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United States of America Patent
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Issued Date -
May 13, 2010
app pub date -
Apr 8, 2008
filing date -
Apr 9, 2007
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
The present invention relates to a multi-layered photochromic sheet and a photo chromic glass prepared therefrom. In particular, the present invention relates to a multi-layered photochromic sheet having excellent durability by reducing a decomposition rate of photochromic dye, in which two or more photochromic films consisting of an oxygen or moisture shielding barrier layer and photochromic layer are stacked, compared to a conventional mono layered film. Further, the present invention relates to a photochromic glass having excellent durability and appearance, in which the multi-layered photochromic sheet is disposed between two glasses, and to a glass for vehicles or buildings using the same.
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