| 摘要 |
PURPOSE:The titled material, consisting of a compound expressed by a specific structural formula, ethylenically unsaturated group-containing compound and photosensitizer, capable of giving cured articles having high hardness and improved hot water and thermal shock resistance and suitable as a groove material for optical disks. CONSTITUTION:A material obtained by blending (A) a compound expressed by the formula (R is H or methyl), e.g. acryloyloxytricyclo[5.2.1.0<2>,<6>]decane, etc., with (B) a compound having >=1 ethylenically unsaturated groups in one molecule e.g. epoxy(meth)acrylate, etc., and (C) a photosensitizer, e.g. benzoyl ethyl ether, etc., as an optional component. For example, 20-60wt% component (A), 40-80wt% component (B) and 1-5wt% component (C) are preferably blended for the aimed material. |
