CELLULOSE ESTER OPTICAL FILMS
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United States of America Patent
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Issued Date -
Sep 13, 2018
app pub date -
May 9, 2018
filing date -
May 9, 2018
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Abstract
Regioselectively substituted cellulose esters having a plurality of aryl-acyl substituents and a plurality of alkyl-acyl substituents are disclosed along with methods for making the same. Such cellulose esters may be suitable for use in optical films, such as optical films having certain Nz values, −A optical films, and/or +C optical films. Optical films prepared employing such cellulose esters have a variety of commercial applications, such as, for example, as compensation films in liquid crystal displays and/or waveplates in creating circular polarized light used in 3-D technology.
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