| 摘要 |
<P>PROBLEM TO BE SOLVED: To obtain an optical disk having excellent surface hardness, performance for protecting a recording layer and humidity resistance while having no warpage and to obtain an active energy ray-setting composition for the optical disk which forms the optical disk. <P>SOLUTION: The active energy ray-setting composition for the optical disk contains (meth)acrylate ester (A) represented by general formula (I) (wherein R<SP>1</SP>denotes a hydrogen atom or a methyl group; R<SP>2</SP>and R<SP>4</SP>each denotes 2 to 10C alkylene group and R<SP>3</SP>denotes a hydrogen atom, an alkyl group, a (meth)acryloil oxy alkyl group, a monocyclic alkyl group, a polycyclic alkyl group or a hydrocarbon group having an aromatic ring) and an oligomer (B) selected from a urethane (meth)acrylate oligomer, an epoxy (meth)acrylate oligomer and a polyester (meth)acrylate oligomer. <P>COPYRIGHT: (C)2004,JPO&NCIPI |
