| 摘要 |
PURPOSE:To provide an optical disk substrate excellent in mass productivity for substrate formation according to the photopolymerization process, sufficient in mechanical and recording properties, and high in reliability. CONSTITUTION:The objective ultraviolet-curing resin compsn. comprises isobornyl methacrylate, a polyurethane acrylate prepd. by the reaction of a polyol with an alicyclic diisocyanate and a hydroxyacrylate, and a photopolymerization initiator. |
