CELLULOSE ESTER FILM, RETARDATION FILM, POLARIZING PLATE AND LIQUID CRYSTAL DISPLAY DEVICE

摘要

PURPOSE: A cellulose ester film is provided to ensure low process contamination in manufacture and high production efficiency and to obtain a retardation film using the foregoing cellulose ester film which has satisfactory surface properties and which is able to control an Re value and an Rth value to desired values, and a polarizing plate which has small changes in performance with time. CONSTITUTION: A cellulose ester film comprises a polycondensed ester which is obtained from a mixture containing an aromatic dicarboxylic acid, an aliphatic dicarboxylic acid, an aliphatic diol having an average carbon atom number of from 2.0 to 3.0 and a monocarboxylic acid, and both terminals of which are a monocarboxylic acid ester derivative. The both terminals of the polycondensed ester are an aliphatic monocarboxylic acid ester derivative.