Low Tg multilayer optical films
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United States of America Patent
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May 30, 2006
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N/A
app pub date -
May 6, 2002
filing date -
May 24, 2001
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Abstract
Multilayer optical films are comprised of materials with glass transition temperatures below room temperature (<30.degree. C.). The high refractive index polymers are unique in that they exhibit mechanical properties similar to other low Tg semi-crystalline polymers, yet have significant birefringence (>0.05) when strain induced oriented. Novel combinations of comonomers for thermoplastics control the rate of crystallinity for improved processability and flexibility, giving the films crease and crumple recovery advantages.
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