Title:
PHOTOCURABLE ADHESIVE SHEET, ADHESIVE SHEET LAMINATE, LAMINATE FOR IMAGE DISPLAY DEVICE, AND IMAGE DISPLAY DEVICE
Document Type and Number:
WIPO Patent Application WO/2020/031991
Kind Code:
A1
Abstract:
The present invention provides a photocurable adhesive sheet that combines stability of shape and conformance to level differences, and additionally demonstrates superior durability after being adhered to an adhesion member. This photocurable adhesive sheet is characterized by comprising a first adhesive layer, a second adhesive layer, and an intermediate layer that is interposed between the first adhesive layer and the second adhesive layer, wherein the intermediate layer is formed from a resin composition including a (meth)acrylic copolymer as the main component resin, and is a layer having a cross-linking structure, the first adhesive layer or the second adhesive layer or each of these layers is a photocurable resin layer that is formed from a photocurable resin composition, the fall time is 60 minutes or greater when a load of 1N/cm2 is applied and the retention force is measured at 40°C, and the fall time is 60 minutes or less when a load of 1N/cm2 is applied and the retention force is measured at 60°C.
Inventors:
ISHII KAHORU (JP)
NOZAWA DAIKI (JP)
INENAGA MAKOTO (JP)
NOZAWA DAIKI (JP)
INENAGA MAKOTO (JP)
Application Number:
PCT/JP2019/030798
Publication Date:
February 13, 2020
Filing Date:
August 06, 2019
Export Citation:
Assignee:
MITSUBISHI CHEM CORP (JP)
International Classes:
C09J7/38; B32B7/06; B32B27/00; B32B27/30; C09J7/24; C09J201/00; G09F9/00
Domestic Patent References:
| WO2015137178A1 | 2015-09-17 |
Foreign References:
| JP2012184390A | 2012-09-27 | |||
| JPH01121386A | 1989-05-15 |
Attorney, Agent or Firm:
TAKEUCHI, ICHIZAWA & ASSOCIATES (JP)
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