Title:
OPTICAL TRANSPARENT ADHESIVE SHEET, LAMINATE SHEET, AND ADHERED STRUCTURE
Document Type and Number:
WIPO Patent Application WO/2020/162439
Kind Code:
A1
Abstract:
The present invention provides: an optical transparent adhesive sheet in which whitening that occurs under a high-temperature and high-humidity environment is prevented; and a laminate sheet and an adhered structure using said optical transparent adhesive sheet. The optical transparent adhesive sheet according to the present invention includes a first acrylic pressure sensitive adhesive layer that forms a first surface, a thermosetting polyurethane layer, and a second acrylic pressure sensitive adhesive layer that forms a second surface, in this order. The first acrylic pressure sensitive adhesive layer and the second acrylic pressure sensitive adhesive layer each exhibit a water-vapor permeability of 500-800 g/m2·h.
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Inventors:
ONOUE MARIKO (JP)
TAKAHAMA SHUN (JP)
TAKAHAMA SHUN (JP)
Application Number:
PCT/JP2020/004068
Publication Date:
August 13, 2020
Filing Date:
February 04, 2020
Export Citation:
Assignee:
BANDO CHEMICAL INDUSTRIES LTD (JP)
International Classes:
B32B27/00; B32B27/30; B32B27/40; C09J7/25; C09J7/38; C09J133/04
Domestic Patent References:
WO2011040422A1 | 2011-04-07 | |||
WO2018101335A1 | 2018-06-07 | |||
WO2019026577A1 | 2019-02-07 |
Foreign References:
JP2007119562A | 2007-05-17 | |||
JP2018159019A | 2018-10-11 | |||
JP2014074122A | 2014-04-24 | |||
JP2013075999A | 2013-04-25 | |||
JP2015093981A | 2015-05-18 | |||
JP2019218455A | 2019-12-26 |
Attorney, Agent or Firm:
YASUTOMI & ASSOCIATES (JP)
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