| abstract |
PROBLEM TO BE SOLVED: To provide a cellulose ester film and a protective film for a polarizing plate which are excellent in moisture permeability and do not deteriorate a polarizer even under high temperature, high humidity and high temperature conditions. SOLUTION: When treated in an atmosphere of 80 ± 5 ° C. and 90 ± 10% RH for 48 hours, the mass change is 0 to 2%. And a protective film for a polarizing plate. |