Title:
UV-CURABLE RESIN COMPOSITIONS FOR OPTICAL DISCS AND CURED PRODUCTS THEREOF
Document Type and Number:
WIPO Patent Application WO/2010/053078
Kind Code:
A1
Abstract:
The UV-curable resin compositions for optical discs are characterized in that they comprise (A) 15‑70 wt% of a (meth)acrylate monomer that has an ethylene oxide chain in the molecule, (B) 5‑50 wt% of a urethane (meth)acrylate, (C) 2‑50 wt% of an epoxy (meth)acrylate, and (D) 1‑10 wt% of a photopolymerization initiator, in the resin composition. The glass transition temperature of cured films thereof is 10‑65°C, and the maximum value of the dynamic loss factor tan δ of the cured films is in the range of 0.35‑0.73.
Inventors:
NAITOU MASAHIRO (JP)
KOBAYASHI DAISUKE (JP)
KIDOBA JUN (JP)
TSUTSUMI HIROKI (JP)
MATSUO YUICHIRO (JP)
KOBAYASHI DAISUKE (JP)
KIDOBA JUN (JP)
TSUTSUMI HIROKI (JP)
MATSUO YUICHIRO (JP)
Application Number:
PCT/JP2009/068791
Publication Date:
May 14, 2010
Filing Date:
November 04, 2009
Export Citation:
Assignee:
NIPPON KAYAKU KK (JP)
NAITOU MASAHIRO (JP)
KOBAYASHI DAISUKE (JP)
KIDOBA JUN (JP)
TSUTSUMI HIROKI (JP)
MATSUO YUICHIRO (JP)
NAITOU MASAHIRO (JP)
KOBAYASHI DAISUKE (JP)
KIDOBA JUN (JP)
TSUTSUMI HIROKI (JP)
MATSUO YUICHIRO (JP)
International Classes:
C08F290/06; C08F299/02; C08G18/67; C08G59/17; G11B7/24; G11B7/254; G11B7/2542; G11B7/257
Foreign References:
JP2008140545A | 2008-06-19 | |||
JPH02312021A | 1990-12-27 | |||
JPH1079139A | 1998-03-24 | |||
JPH0478578A | 1992-03-12 | |||
JPH11273147A | 1999-10-08 | |||
JP2002230831A | 2002-08-16 | |||
JP2005171154A | 2005-06-30 |
Other References:
See also references of EP 2346044A4
Attorney, Agent or Firm:
ASAMURA, Kiyoshi et al. (JP)
Hiroshi Asamura (JP)
Hiroshi Asamura (JP)
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