| 摘要 |
PROBLEM TO BE SOLVED: To provide an optical film composed of a fumaric acid diester based resin in which the surface resistance is suppressed low.SOLUTION: There is provided an optical film which contains 0.3 to 3 pts.wt. of a cationic surfactant or an anionic surfactant, based on 100 pts.wt. of a fumaric acid diester based resin containing a fumaric acid diester residue represented by a specific structural formula or based on 100 pts.wt. of a fumaric acid diester based resin containing 75 mol% or more and less than 100 mol% of a fumaric acid diester residue represented by a specific structural formula and a fumaric acid diester residue unit of more than 0 mol% and 25 mol% or less of a (meth)acrylic acid ester residue having a cyclic ether group having 3 to 6-membered ring, and has a surface resistance of 10&OHgr;/square or less at an application voltage of 100 V. |
