Login| Sign Up| Help| Contact|

Patent Searching and Data


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.

Inventors:
ONOUE MARIKO (JP)
TAKAHAMA SHUN (JP)
Application Number:
PCT/JP2020/004068
Publication Date:
August 13, 2020
Filing Date:
February 04, 2020
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
BANDO CHEMICAL INDUSTRIES LTD (JP)
International Classes:
B32B27/00; B32B27/30; B32B27/40; C09J7/25; C09J7/38; C09J133/04
Domestic Patent References:
WO2011040422A12011-04-07
WO2018101335A12018-06-07
WO2019026577A12019-02-07
Foreign References:
JP2007119562A2007-05-17
JP2018159019A2018-10-11
JP2014074122A2014-04-24
JP2013075999A2013-04-25
JP2015093981A2015-05-18
JP2019218455A2019-12-26
Attorney, Agent or Firm:
YASUTOMI & ASSOCIATES (JP)
Download PDF: