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Title:
DOUBLE-SIDED ADHESIVE SHEET, MULTILAYER BODY FOR CONSTITUTING IMAGE DISPLAY DEVICE, AND IMAGE DISPLAY DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/188926
Kind Code:
A1
Abstract:
The present invention provides a double-sided adhesive sheet which has a multilayer configuration that has an intermediate layer (α layer) and a surface layer (β layer), wherein: the intermediate layer (α layer) is formed of a resin composition that contains a (meth)acrylic polymer, a crosslinking agent and a photopolymerization initiator; the surface layer (β layer) is formed of an adhesive composition that contains a (meth)acrylic polymer, a crosslinking agent, a photopolymerization initiator which can be activated by light having a wavelength of 405 nm or more, and an ultraviolet absorbent; and the stress relaxation rate is 30% or more. This double-sided adhesive sheet has curability and can be prevented from ultraviolet deterioration of the adhesive sheet, while having excellent discoloration resistance and excellent level difference absorbing properties.　

Inventors:
WAKAYAMA JOJI (JP)
NOZAWA DAIKI (JP)
Application Number:
PCT/JP2023/005155
Publication Date:
October 05, 2023
Filing Date:
February 15, 2023
Export Citation:
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Assignee:
MITSUBISHI CHEM CORP (JP)
International Classes:
C09J7/38; C09J11/06; C09J133/04; G09F9/00
Domestic Patent References:
WO2019031426A12019-02-14
Foreign References:
JP2017155213A2017-09-07
JPH10110140A1998-04-28
JP2013181088A2013-09-12
JP2022027805A2022-02-14
JP2021091117A2021-06-17
JP2021011516A2021-02-04
JP2019044152A2019-03-22
JP2021177244A2021-11-11
JP2022056940A2022-04-11
Attorney, Agent or Firm:
ICHIZAWA, KAWADA & ASSOCIATES (JP)
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