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1. 发明申请

US20120282427A1 Ultraviolet-Curable Resin Composition For Optical Disc And Cured Product Thereof 审中-公开
标题翻译：用于光盘及其固化产品的紫外线固化树脂组合物
公开(公告)号：US20120282427A1
公开(公告)日：2012-11-08
申请号：US13511814
申请日：2010-11-29
申请人： Hiroki Tsutsumi , Daisuke Kobayashi , Masahiro Naitou , Yuichiro Matsuo , Jun Kidoba , Hayato Motohashi
发明人： Hiroki Tsutsumi , Daisuke Kobayashi , Masahiro Naitou , Yuichiro Matsuo , Jun Kidoba , Hayato Motohashi
IPC分类号： B32B3/02 , C08G18/75 , B29C35/08
CPC分类号： G11B7/2533 , C08F290/067 , C08G18/672 , C08G18/755 , G11B7/24038 , G11B7/256 , G11B7/263
摘要： The present invention relates to a multilayer optical disc having, as an intermediate layer, a cured product layer of an ultraviolet-curable resin composition containing an urethane (meth)acrylate (A) having one or two (meth)acrylate groups in one molecule obtained by reacting a monofunctional or bifunctional organic isocyanate (a) having a molecular weight of 350 or less with a mono(meth)acrylate (b) having a hydroxy group, a (meth)acrylate monomer (B) and a photopolymerization initiator (C), where the content of the (A) component is 5 to less than 40% by weight based on the total amount of the (A) component and the (B) component and the rest is (B), and to a resin composition for said cured product layer. Said resin composition has characteristics that it has a smaller variation in warp before and after curing the above-described resin composition when it is formed into the above-described intermediate layer, it is suitable for shaping a substrate by a 2P method because it allows good detachability of a stamper after curing, it is excellent in mass production of multilayer optical discs, and that the obtained optical disc therefrom has a smaller variation in warp before and after durability test under high temperature and high humidity.
摘要翻译：本发明涉及一种具有一分子中含有一个或两个（甲基）丙烯酸酯基团的氨基甲酸酯（甲基）丙烯酸酯（A））的紫外线固化树脂组合物的固化产物层作为中间层的多层光盘，通过使分子量为350以下的单官能或双官能的有机异氰酸酯（a）与具有羟基的单（甲基）丙烯酸酯（b），（甲基）丙烯酸酯单体（B）和光聚合引发剂（C），其中（A）成分的含量相对于（A）成分和（B）成分的总量为5〜小于40重量％，其余为（B）），以及（A）成分的树脂组合物所述固化产物层。所述树脂组合物具有如下特征：当上述树脂组合物形成上述中间层时，其固化之前和之后的翘曲变化较小，因此适用于通过2P法成型基板，因为它允许良好固化后的压模的可拆卸性，多层光盘的批量生产是优异的，并且所获得的光盘在高温高湿下耐久性试验前后的翘曲变化较小。

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