Patent ID: 8293145

Claim:
An optical film comprising, with respect to 100 parts by mass of a cellulose ester, 0.001 to 10 parts by mass of a triazine compound represented by the following general formula (1) as an ultraviolet absorber: wherein, n is an integer of 1 to 4; where n is 1, R represents a 2-ethylhexyl group; where n is 2 to 4, R represents a residue obtained by removing 2,3, or 4 carboxylic acid groups from a C 1-34 aliphatic or aromatic polybasic acid; and R 1 , R 2 , R 3 , and R 4 each independently represent a hydrogen atom or a C 1-4 alkyl group, and wherein the optical film is a protective film for a polarizing plate.