CELLULOSE ESTER FILM, OPTICAL FILM AND MANUFACTURING METHOD THEREOF

摘要

PROBLEM TO BE SOLVED: To provide a cellulose film having excellent ultraviolet absorptivity and less elusion of an ultraviolet absorbing compound when being treated by alkali saponification, and to provide an optical film having less foreign substances, excellent productivity and less yellowish color. SOLUTION: A cellulose film contains an ultraviolet absorbing compound having a melting point of not more than 20 deg.C. An optical film contains an ultraviolet absorber having a partition coefficient of not less than 0.2.