DOUBLE-SIDED STICKY SHEET - NITTO DENKO CORP

Title:

DOUBLE-SIDED STICKY SHEET

Document Type and Number:

WIPO Patent Application WO/2024/057559

Kind Code:

A1

Abstract:

Provided is a double-sided sticky sheet capable of having a high sticking strength and simultaneously achieving a reduction in minute recessed and protruding deformation and processibility. The double-sided sticky sheet has a sticky agent layer containing an acrylic polymer. The acrylic polymer is a polymer of monomer components containing heptyl acrylate and carboxyl group-containing monomers. The monomer components contain 3 weight% or more of the carboxyl group-containing monomers. Moreover, the gel fraction of the sticky agent layer is higher than 40%. Furthermore, the sticky agent layer has a storage elastic modulus of 0.04 MPa or more at 23°C and a tanδ of 0.46 or more at 23°C.

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Inventors:

SUMIDA HIROMICHI (JP)
NISHIWAKI MASATAKA (JP)
SHIMOOKA KEIGO (JP)

Application Number:

PCT/JP2022/045741

Publication Date:

March 21, 2024

Filing Date:

December 12, 2022

Export Citation:

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Assignee:

NITTO DENKO CORP (JP)

International Classes:

C09J131/04; C09J7/38

Domestic Patent References:

WO2021125247A1	2021-06-24
WO2021125278A1	2021-06-24

Foreign References:

JP7128390B1	2022-08-30
JP2019070102A	2019-05-09
JP2005015524A	2005-01-20
JP2020164844A	2020-10-08

Attorney, Agent or Firm:

OI, Michiko (JP)

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