公开(公告)号：US10800943B2

公开(公告)日：2020-10-13

申请号：US15671583

申请日：2017-08-08

Applicant: NITTO DENKO CORPORATION

Inventor： Hiroki Kigami ,  Yasushi Buzojima ,  Kenta Jozuka ,  Midori Segawa

IPC: C09J7/10 ,  C09J7/38 ,  C09J9/00 ,  C09J11/06 ,  C23F15/00 ,  C08K5/3475 ,  C09J133/08 ,  C09J7/00 ,  B32B7/06 ,  B32B7/12 ,  C09J133/06

Abstract: Provided is a pressure-sensitive adhesive (PSA) sheet having a low relative dielectric constant, satisfactory metal corrosion preventing property, and excellent member holding performance. The present invention provides a PSA sheet having a PSA layer including a base polymer and a rust inhibitor. The base polymer is an acrylic polymer, and monomeric components constituting the acrylic polymer comprise a (meth)acrylate having an alkyl group having 5 or more carbon atoms at an ester end at 50% by weight or more of the monomeric components. The PSA layer has a relative dielectric constant of 3 or less at 300 kHz.

公开(公告)号：US10800944B2

公开(公告)日：2020-10-13

申请号：US15671633

申请日：2017-08-08

Applicant: NITTO DENKO CORPORATION

Inventor： Hiroki Kigami ,  Yasushi Buzojima ,  Kenta Jozuka ,  Midori Segawa ,  Masataka Nishiwaki ,  Ryo Morioka

IPC: C09J7/38 ,  C09J7/10 ,  C09J11/06 ,  C08K5/3475 ,  C09J133/08 ,  C09J7/00 ,  B32B7/06 ,  B32B7/12 ,  C09J9/00 ,  C23F15/00 ,  C09J133/06

Abstract: Provided is a pressure-sensitive adhesive (PSA) sheet including a PSA layer formed from a PSA composition including a base polymer, crosslinking agents of two or more species having mutually different types of crosslinkable functional groups, and an azole-based rust inhibitor. Here, one of the crosslinking agents of two or more species is an isocyanate-based crosslinking agent. Monomeric components constituting the base polymer include a carboxy group-containing monomer. The amount of the azole-based rust inhibitor in the PSA layer is less than 8 parts by weight with respect to 100 parts by weight of the base polymer.

公开(公告)号：US20200148919A1

公开(公告)日：2020-05-14

申请号：US16682005

申请日：2019-11-13

Applicant: Nitto Denko Corporation

Inventor： Toshiki Ikami ,  Yasushi Buzojima ,  Kenta Jozuka ,  Naoaki Higuchi ,  Midori Segawa ,  Naohiro Kato

IPC: C09J7/38 ,  C09J133/08 ,  B32B27/06

Abstract: Provided is a PSA sheet capable of providing reliable adhesion even upon exposure to cosmetics, chemicals and the like containing polar compounds. The PSA sheet provided by this invention has a PSA layer comprising a polyester-based polymer. The PSA sheet has a 180° peel strength of 1 N/5 mm or greater after ethanol immersion.