(KR101684809) The present invention relates to cellulose ester film which is capable of enhancing the high-temperature high-humidity reliability of the cellulose ester phase difference film which can be manufactured into highly reliable retardant film and polarizing plate for VA (Vertical Alignment), and includes a plasticizer of an asymmetric ester compound containing an aromatic group represented by the following formula (1). In this formula, T is a benzene carboxylic acid residue, D is an alkylene glycol residue having 2 to 12 carbon atoms, an aryl glycol residue having 6 to 12 carbon atoms, or an oxyalkylene glycol residue having 4 to 12 carbon atoms, and P is an alkylene dicarboxylic acid residue having 4 to 12 carbon atoms or an aryl dicarboxylic acid residue having 6 to 12 carbon atoms, and n represents an integer of 1 or more. Preferably, the benzene carboxylic acid residue is a toluene acid residue, and the alkylene glycol residue is selected from the group consisting of propylene glycol, neopentyl glycol, diethyleneglycol, dipropyleneglycol, and a triethyleneglycol residue, and the aryl dicarboxylic acid residue is preferably a phthalic acid residue. COPYRIGHT KIPO 2016
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