| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an optical disk which prevents its light reflection film from deteriorating under an environment of high temperature and high humidity or under light exposure, is excellent in durability and in light resistance, and is also excellent in curvature reduction by using a cured film having flexibility. <P>SOLUTION: By using an ultraviolet-curable composition, which contains a specific ultraviolet-curable compound obtained by modifying a bisphenol epoxy compound with a polyester having a flexible structure, as a light-transmitting layer, there can be obtained an optical disk having good characteristics such as excellent durability, excellent light resistance and excellently reduced warp, while suppressing deterioration of a light reflection film under high temperature high humidity conditions or under exposure to light. <P>COPYRIGHT: (C)2008,JPO&INPIT |
