| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide cellulose ester resin composition that provides high birefringence and achieves a thin film of an optical film, and the optical film using the same. <P>SOLUTION: The cellulose ester resin composition is used, which contains: a cellulose acylate (A) in which a substitution degree of an acetyl group is in the range of 0.1-2.2, a substitution degree of a propionyl group or a butyryl group is in the range of 0.5-2.7, a substitution degree of a hydroxy group is in the range of 0-1, and the sum of these substitution degrees is 3; and an ester compound (B), wherein the ester compound (B) is an ester compound obtained by performing an esterification reaction of alkylenediol (b1), an aromatic dicarboxylic acid (b2), which is terephthalic acid or naphthalenedicarboxylic acid, or a dialkyl ester compound thereof, and an aromatic monocarboxylic acid (b3) or an alkyl ester compound thereof. <P>COPYRIGHT: (C)2012,JPO&INPIT |
