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    Optical Disc and an Ultraviolet-Curable Resin Composition Therefor
    1.
    发明申请
    Optical Disc and an Ultraviolet-Curable Resin Composition Therefor 审中-公开
    光盘及其紫外线固化树脂组合物

    公开(公告)号：US20090148651A1

    公开(公告)日：2009-06-11

    申请号：US12227620

    申请日：2007-06-05

    申请人： Kiyohisa Tokuda ,  Masahiro Naitou ,  Go Mizutani ,  Daisuke Kobayashi

    发明人： Kiyohisa Tokuda ,  Masahiro Naitou ,  Go Mizutani ,  Daisuke Kobayashi

    IPC分类号： B32B5/02 ,  C08L33/14

    CPC分类号： C08F290/06 ,  C08F222/1006 ,  C08F283/006 ,  C08F290/061 ,  C08F290/064 ,  C08F290/067 ,  C08G18/672 ,  C09D4/00 ,  C09D175/16 ,  G11B7/2542 ,  G11B7/266 ,  C08G18/40 ,  C08F220/36

    摘要： The present invention relates to an optical disc having a cured product layer of an ultraviolet-curable resin composition containing (A) dicyclopentenyloxyethyl acrylate, (B) urethane (meth)acrylate and/or (C) epoxy (meth)acrylate, and (D) photopolymerization initiator, and a resin composition for the cured product layer thereof and a cured product therewith; and the optical disc of the present invention has less warping after curing and is excellent in transparency and durability and therefore suitable for next generation high density optical discs where recording and/or reproducing are performed using a blue laser; the resin composition for said cured product layer has less deterioration with age and less viscosity change in recycle and is suitable for a coating agent of optical discs and for efficient production of optical discs.

    摘要翻译： 本发明涉及具有紫外线固化树脂组合物的固化产物层的光盘，该组合物含有（A）丙烯酸二环戊烯氧基乙酯，（B）氨基甲酸酯（甲基）丙烯酸酯和/或（C）环氧（甲基）丙烯酸酯和（D ）光聚合引发剂，和其固化产物层的树脂组合物和其固化产物; 本发明的光盘在固化后翘曲较小，透明性和耐久性优异，适用于使用蓝色激光进行记录和/或再现的下一代高密度光盘; 用于所述固化产物层的树脂组合物的年龄变化较小，再循环中的粘度变化较小，并且适用于光盘的涂布剂和用于光盘的有效生产。

    Adhesive Compositon for Optical Disk, Cured Product and Article
    3.
    发明申请
    Adhesive Compositon for Optical Disk, Cured Product and Article 审中-公开
    光盘粘合剂，固化产品及其制品

    公开(公告)号：US20080152857A1

    公开(公告)日：2008-06-26

    申请号：US11660013

    申请日：2005-08-10

    申请人： Go Mizutani ,  Kiyohisa Tokuda ,  Kazuhiko Ishii ,  Masahiro Naitou ,  Takeo Miyake

    发明人： Go Mizutani ,  Kiyohisa Tokuda ,  Kazuhiko Ishii ,  Masahiro Naitou ,  Takeo Miyake

    IPC分类号： C08F2/46 ,  B32B3/26

    CPC分类号： G11B7/256 ,  C09J175/16

    摘要： Disclosed is an adhesive which enables to obtain a bonded optical disk, wherein optical disks having a total reflection film or a translucent reflection film made of silver or a silver alloy are bonded together, which exhibits high adhesion strength between the reflection film and a cured product of the adhesive as well as between a polycarbonate substrate and the cured product of the adhesive, while having high durability equivalent to those of the conventional optical disks using translucent reflective film made of gold. Specifically disclosed is an ultraviolet-curable adhesive resin composition containing a bisphenol-type epoxy (meth)acrylate (A), a di(meth)acrylate (B) and a photopolymerization initiator (C) which is characterized in that the di(meth)acrylate (B) is composed of one or more selected from a di(meth)acrylate (B-1) having an adipate structure, a di(meth)acrylate (B-2) having a caprolactone-modified structure, an alkylene oxide-modified neopentyl glycol di(meth)acrylate compound (B-3) and an alkylene oxide-modified 1,6-hexanediol di(meth)acrylate compound (B-4).

    摘要翻译： 公开了一种能够获得粘合光盘的粘合剂，其中具有全反射膜或由银或银合金制成的半透明反射膜的光盘结合在一起，其在反射膜和固化产物之间显示出高的粘合强度 的粘合剂以及聚碳酸酯基材和粘合剂的固化产物之间，同时具有与使用由金制成的半透明反射膜的常规光盘相当的高耐用性。 具体公开了含有双酚型环氧（甲基）丙烯酸酯（A），二（甲基）丙烯酸酯（B）和光聚合引发剂（C））的紫外线固化性粘合性树脂组合物，其特征在于，所述二（甲基） 丙烯酸酯（B）由选自具有己二酸酯结构的二（甲基）丙烯酸酯（B-1），具有己内酯改性结构的二（甲基）丙烯酸酯（B-2），烯化氧 - 改性新戊二醇二（甲基）丙烯酸酯化合物（B-3）和烯化氧改性的1,6-己二醇二（甲基）丙烯酸酯化合物（B-4）。

    Ultraviolet-Curable Resin Composition For Optical Disc And Cured Product Thereof
    7.
    发明申请
    Ultraviolet-Curable Resin Composition For Optical Disc And Cured Product Thereof 审中-公开
    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。