公开(公告)号：US20200095473A1

公开(公告)日：2020-03-26

申请号：US16576948

申请日：2019-09-20

Applicant: NITTO DENKO CORPORATION

Inventor： Shigeki Watanabe ,  Masahito Niwa ,  Masataka Nishiwaki ,  Kazuki Minoura

IPC: C09J7/38 ,  C09J11/06 ,  B32B27/06

Abstract: Provided is a PSA sheet for use in electronic devices. The PSA sheet has a PSA layer formed from a natural rubber-based PSA. The base polymer of the PSA comprises a methyl methacrylate-modified natural rubber and at least 50% of all carbons in the PSA layer comes from biomass-derived carbons. The PSA sheet shows a displaced length of 1.0 mm/60 min or less in a heat-resistant holding power test carried out at 80° C.

公开(公告)号：US20200096810A1

公开(公告)日：2020-03-26

申请号：US16576898

申请日：2019-09-20

Applicant: Nitto Denko Corporation

Inventor： Masataka Nishiwaki ,  Kazuki Minoura ,  Kenta Jozuka ,  Naohiro Kato

IPC: G02F1/1333 ,  G02F1/1335 ,  C09J7/38

Abstract: Provided is a PSA sheet that can be processed with excellent precision while providing excellent light-blocking properties in an in-plane direction and in the thickness direction in an embodiment where the support substrate has a limited thickness. The PSA sheet has a support substrate having a thickness less than 75 μm and a PSA layer placed at least on one face of the support substrate. The PSA sheet has light transmittances of 0.04% or lower in XY and Z directions thereof.

公开(公告)号：US10983377B2

公开(公告)日：2021-04-20

申请号：US16576898

申请日：2019-09-20

Applicant: NITTO DENKO CORPORATION

Inventor： Masataka Nishiwaki ,  Kazuki Minoura ,  Kenta Jozuka ,  Naohiro Kato

IPC: G02F1/1333 ,  C09J7/38 ,  G02F1/1335

Abstract: Provided is a PSA sheet that can be processed with excellent precision while providing excellent light-blocking properties in an in-plane direction and in the thickness direction in an embodiment where the support substrate has a limited thickness. The PSA sheet has a support substrate having a thickness less than 75 μm and a PSA layer placed at least on one face of the support substrate. The PSA sheet has light transmittances of 0.04% or lower in XY and Z directions thereof.

公开(公告)号：US20200208022A1

公开(公告)日：2020-07-02

申请号：US16722241

申请日：2019-12-20

Applicant: NITTO DENKO CORPORATION

Inventor： Masahito Niwa ,  Shigeki Watanabe ,  Masataka Nishiwaki ,  Kazuki Minoura

IPC: C09J7/38 ,  C09J11/08

Abstract: Provided is a PSA sheet with reduced dependence on fossil-resource-based materials while having an acrylic PSA. The PSA sheet provided includes a PSA layer. The PSA layer is formed from a PSA composition including an acrylic polymer. The acrylic polymer is a polymer of monomers that include more than 50% (by weight) acrylic monomer. At least 50% of all carbons in the PSA layer are biomass-derived carbons. The PSA sheet has a peel strength of less than 3 N/20 mm to a stainless steel plate.