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Patent Searching and Data


Title:
OPTICAL LAMINATE
Document Type and Number:
WIPO Patent Application WO/2018/146939
Kind Code:
A1
Abstract:
This optical laminate comprises a curable resin layer A, a cyclic olefin-based optical film layer B that is laminated on the curable resin layer A, and a curable resin layer C that is laminated on the cyclic olefin-based optical film layer B. The curable resin layer A contains an ultraviolet curable resin composition that contains urethane acrylate, an acrylic oligomer or acrylic polymer, and a photopolymerization initiator; the cyclic olefin-based optical film layer B is biaxially stretched; the Martens hardness M1 of the surface of the curable resin layer A at a test force of 10 mN and the Martens hardness M2 of the surface of the curable resin layer C at a test force of 10 mN are different from each other, while being both 150 N/mm2 or more; and a coefficient of static friction between a surface of the curable resin layer A, said surface being on the reverse side of the cyclic olefin-based optical film layer B-side surface, and a surface of the curable resin layer C, said surface being on the reverse side of the cyclic olefin-based optical film layer B-side surface, is less than 1.

Inventors:
KADOWAKI NAOMI (JP)
OHISHI MICHIHITO (JP)
Application Number:
PCT/JP2017/044735
Publication Date:
August 16, 2018
Filing Date:
December 13, 2017
Export Citation:
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Assignee:
GUNZE KK (JP)
International Classes:
B32B27/00; B32B27/30
Domestic Patent References:
WO2006033414A12006-03-30
WO2006030797A12006-03-23
Foreign References:
JP2009245935A2009-10-22
JP2009226932A2009-10-08
JP2015168095A2015-09-28
JP2016118942A2016-06-30
JP2008518280A2008-05-29
Attorney, Agent or Firm:
TACHIBANA, Kenji et al. (JP)
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