| 摘要 |
PURPOSE: To enhance the refractive index vertical to the film face with a single layer by using a film formable polymer contg. specified plural repeating units in a specified ratio as the main component. CONSTITUTION: A film formable polymer consisting of 100-10mol% repeating unit shown by formula I and 0-90mol% repeating unit shown by formula II is used as the main component. In the formulas I and II, Ar is a 6-15C univalent aromatic group, a part or the whole of the hydrogens of the aromatic group can be substituted by 1-4C alkyl, halogen group, nitro group or nitrile group, and X<1> to X<4> are respectively hydrogen atom or halogen group and can be the same or different. Among such films, the film consisting of a polymer, wherein the Ar in the formula I is a phenyl group contg. a substituent having >=0.2 Hammett value σ, is most preferable. |
