| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an electron beam-curable composition for forming an optical film excellent in a balance of the transparency and the yellowing degree after the light resistance test of its cured material, good in solvent resistance, and low in the in-plane retardations in the frontal and oblique directions and the thickness-direction retardation, even if containing no UVA or containing UVA; and to provide an optical film obtained, and a polarizer protecting film and a sheet polarize obtained from the composition. <P>SOLUTION: The optical film or the electron beam-curable composition for forming a sheet contains a urethane (meth)acrylate (A) being a reaction product of a polycarbonate diol, a polyester diol or a polyether diol, a yellowing-free organic diisocyanate and a hydroxyl group-containing (meth)acrylate, and a compound having one (meth)acryloyl group, wherein the haze of its cured material is ≤1.0%, and the in-plane retardations in the frontal and 40°-oblique directions and the thickness-direction retardation are all ≤10 nm. <P>COPYRIGHT: (C)2013,JPO&INPIT |
