Provided is a resin composition based on a thermoplastic saturated norbornene group polymer which is excellent in adhesion to the recording film of optical disks and adhesion to a hard coating film or a protective film formed by coating an acrylic ultraviolet curing coating material or like films without deteriorating excellent heat resistance and transparency inherent to thermoplastic saturated norbornene group polymers. Also provided are optical disk substrates and optical disks by using said composition.
A composition comprising a thermoplastic saturated norbornene group polymer and a partially etherified product of a polyhydric alcohol having 3 or more hydroxyl groups incorporated thereinto. An optical disk substrate formed of said composition and an optical disk comprising said optical disk substrate and an information recording film and/or a light reflecting film and a protective film laminated thereon.
本发明提供了一种基于热塑性饱和
降冰片烯基聚合物的
树脂组合物,该组合物与光盘记录膜的粘合性以及与硬涂膜或通过涂覆
丙烯酸紫外线固化涂层材料或类似薄膜而形成的保护膜的粘合性极佳,且不会降低热塑性饱和
降冰片烯基聚合物固有的优异耐热性和透明度。此外,还提供了使用所述组合物的光盘基板和光盘。
一种组合物,由热塑性饱和
降冰片烯基聚合物和含有 3 个或 3 个以上羟基的多元醇的部分醚化产物组成。由所述组合物形成的光盘基板,以及由所述光盘基板和信息记录膜和/或光反射膜以及层压在其上的保护膜组成的光盘。