Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
ULTRAVIOLET CURABLE RESIN COMPOSITION FOR OPTICAL DISCS, AND CURED PRODUCT OF SAID RESIN COMPOSITION
Document Type and Number:
WIPO Patent Application WO/2011/067909
Kind Code:
A1
Abstract:
Disclosed is a multilayer optical disc having, as the middle layer thereof, a cured product layer formed from an ultraviolet curable resin composition which contains: an urethane(meth)acrylate (A) having one or two (meth)acrylate groups within 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 hydroxyl group; a (meth)acrylate monomer (B); and a photopolymerization initiator (C). In the ultraviolet curable resin composition, the content of component (A) is less than 5 to 40 weight% in relation to the total of component (A) and component (B), and the remainder consists of component (B). Also provided is a resin composition for the abovementioned cured product layer. When said resin composition is used to form the abovementioned middle layer, few changes caused by warping are produced before and after curing the resin composition, and the stamper exhibits excellent peeling properties after curing. Therefore said resin composition is suitable for use in forming a substrate by means of the 2P method. Moreover, multilayer optical discs can be produced in large quantities, and few changes caused by warping are produced on the resulting optical discs before and after an endurance test which was performed under high temperature and high humidity conditions.

Inventors:
TSUTSUMI, Hiroki (31-12 Shimo 3-chome, Kita-k, Tokyo 88, 〒1158588, JP)
堤 裕貴 (〒88 東京都北区志茂3-31-12日本化薬株式会社 機能化学品研究所内 Tokyo, 〒1158588, JP)
KOBAYASHI, Daisuke (31-12 Shimo 3-chome, Kita-k, Tokyo 88, 〒1158588, JP)
小林 大祐 (〒88 東京都北区志茂3-31-12日本化薬株式会社 機能化学品研究所内 Tokyo, 〒1158588, JP)
NAITOU, Masahiro (31-12 Shimo 3-chome, Kita-k, Tokyo 88, 〒1158588, JP)
内藤 正弘 (〒88 東京都北区志茂3-31-12日本化薬株式会社 機能化学品研究所内 Tokyo, 〒1158588, JP)
Application Number:
JP2010/006927
Publication Date:
June 09, 2011
Filing Date:
November 29, 2010
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
NIPPONKAYAKU KABUSHIKIKAISHA (11-2, Fujimi 1-chome Chiyoda-k, Tokyo 72, 〒1028172, JP)
日本化薬株式会社 (〒72 東京都千代田区富士見一丁目11番2号 Tokyo, 〒1028172, JP)
TSUTSUMI, Hiroki (31-12 Shimo 3-chome, Kita-k, Tokyo 88, 〒1158588, JP)
堤 裕貴 (〒88 東京都北区志茂3-31-12日本化薬株式会社 機能化学品研究所内 Tokyo, 〒1158588, JP)
KOBAYASHI, Daisuke (31-12 Shimo 3-chome, Kita-k, Tokyo 88, 〒1158588, JP)
小林 大祐 (〒88 東京都北区志茂3-31-12日本化薬株式会社 機能化学品研究所内 Tokyo, 〒1158588, JP)
NAITOU, Masahiro (31-12 Shimo 3-chome, Kita-k, Tokyo 88, 〒1158588, JP)
International Classes:
G11B7/254; C08F290/06; C08G18/67; G11B7/24; G11B7/253; G11B7/2533; G11B7/257; G11B7/24038
Attorney, Agent or Firm:
SAEKI, Norio (4th Floor, Aminosan Kaikan Building 15-8, Nihonbashi 3-chome, Chuo-k, Tokyo 27, 〒1030027, JP)
Download PDF: