| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a volume hologram optical recording medium, having a recording layer having low moisture absorption. <P>SOLUTION: Disclosed is a volume hologram optical recording medium having a multilayer structure comprising a transparent substrate and a recording layer. The recording layer contains a resin matrix (A) and/or a resin matrix (B), and an optically active compound (C), wherein the resin matrix (A) is obtained by reacting a polyisocyanate (A1) with a polyol (A2), having a -(C=O)O- group and/or a -O(C=O)O- group, and the resin matrix (B) is obtained by reacting an epoxy compound (B1) having two or more epoxy groups in a molecule with a curing agent (B2). In addition, such a recording layer has a moisture absorption rate of not more than 1.5 wt.%. <P>COPYRIGHT: (C)2008,JPO&INPIT |
