VOLUME HOLOGRAM OPTICAL RECORDING MEDIUM, COMPOSITION FOR FORMING VOLUME HOLOGRAM RECORDING LAYER, VOLUME HOLOGRAM RECORDING MATERIAL, AND VOLUME HOLOGRAM OPTICAL RECORDING METHOD

WIPO Patent Application WO/2008/029765

A1

Disclosed is a volume hologram optical recording medium having a recording layer with low moisture absorption. Specifically 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), and 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, while 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, the recording layer has a moisture absorption rate of not more than 1.5% by weight.

MIKI, Yasuaki (Inc. 1000, Kamoshida-cho, Aoba-ku, Yokohama-sh, Kanagawa 02, 2278502, JP)
三木 康彰 (〒02 神奈川県横浜市青葉区鴨志田町１０００番地 株式会社三菱化学科学技術研究センター内 Kanagawa, 2278502, JP)

JP2007/067139

March 13, 2008

September 03, 2007

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MITSUBISHI CHEMICAL CORPORATION (14-1, Shiba 4-chome Minato-k, Tokyo 14, 1080014, JP)
三菱化学株式会社 (〒14 東京都港区芝四丁目１４番１号 Tokyo, 1080014, JP)
MIKI, Yasuaki (Inc. 1000, Kamoshida-cho, Aoba-ku, Yokohama-sh, Kanagawa 02, 2278502, JP)

G03H1/02; G11B7/244

CHIDA, Takeshi et al. (SERIO PATENT & TRADEMARK ATTORNEYS, 4F Yamaguchi kensetsu No.2 Building4-11, Akasaka 5-chome, Minato-ku, Tokyo 52, 1070052, JP)

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