公开(公告)号：US20230167336A1

公开(公告)日：2023-06-01

申请号：US17920228

申请日：2021-03-22

Applicant: NITTO DENKO CORPORATION

Inventor： Mizuho NAGATA ,  Yu TACHIKAWA ,  Tomokazu TAKAHASHI ,  Satoshi HONDA

IPC: C09J7/38

CPC classification number: C09J7/38 ,  C09J2301/312 ,  C09J2301/408

Abstract: Provided is a pressure-sensitive adhesive sheet that can temporarily fix an adherend in a peelable manner, the pressure-sensitive adhesive sheet being free from requiring high-output laser light irradiation at the time of the peeling of the adherend. The pressure-sensitive adhesive sheet of the present invention includes a pressure-sensitive adhesive layer containing a UV absorber, wherein the pressure-sensitive adhesive layer has a first surface and a second surface opposed to the first surface, and wherein a maximum value S1 of a detection intensity of the UV absorber by time-of-flight secondary ion mass spectrometry (TOF-SIMS) in a range of from the first surface to a depth of 1 μm in a thickness direction and a detection intensity C of the UV absorber by the TOF-SIMS at a center point in the thickness direction of the pressure-sensitive adhesive layer satisfy a relationship: S1/C≥1.1.

公开(公告)号：US20220325143A1

公开(公告)日：2022-10-13

申请号：US17625464

申请日：2020-03-19

Applicant: NITTO DENKO CORPORATION

Inventor： Mizuho NAGATA ,  Yu TACHIKAWA ,  Keisuke HIRANO ,  Kiichiro MATSUSHITA

IPC: C09J7/38 ,  C09J133/08 ,  C09J7/20

Abstract: A method for releasing an adherend of the present invention includes a first step and a second step. In the first step, a bonded product (100) including a pressure-sensitive adhesive layer (10), and an adherend (20) bonded thereto is prepared. The pressure-sensitive adhesive layer (10) includes a pressure-sensitive adhesive component and a heat-expandable agent. In the second step, an energy ray (R) is irradiated from the pressure-sensitive adhesive layer (10)-side of the bonded product (100) toward the adherend (20). A transmittance of the energy ray (R) in the pressure-sensitive adhesive layer (10) is 60% or more. The pressure-sensitive adhesive composition of the present invention is a composition used for forming the pressure-sensitive adhesive layer (10) in the method.

公开(公告)号：US20190247534A1

公开(公告)日：2019-08-15

申请号：US16333432

申请日：2017-08-10

Applicant: NITTO DENKO CORPORATION

Inventor： Eiji TOYODA ,  Ryoma YOSHIOKA ,  Naoya SUGIMOTO ,  Yu TACHIKAWA

IPC: A61L15/20 ,  A61K47/14 ,  A61K47/32 ,  A61L15/24 ,  A61K9/70 ,  A61L15/26 ,  C09J11/06 ,  C09J7/20

CPC classification number: A61L15/20 ,  A61K9/70 ,  A61K47/14 ,  A61K47/32 ,  A61L15/24 ,  A61L15/26 ,  C09J7/20 ,  C09J11/06 ,  C09J201/00

Abstract: A laminate patchable a living body includes a pressure-sensitive adhesive layer for patching to the living body and a substrate layer disposed on a one-side surface in a thickness direction of the pressure-sensitive adhesive layer and supporting the pressure-sensitive adhesive layer. The pressure-sensitive adhesive layer contains a first carboxylic acid ester and the substrate layer contains a second carboxylic acid ester.

公开(公告)号：US20230019125A1

公开(公告)日：2023-01-19

申请号：US17785141

申请日：2020-12-10

Applicant: NITTO DENKO CORPORATION

Inventor： Mizuho NAGATA ,  Yu TACHIKAWA ,  Tomokazu TAKAHASHI ,  Satoshi HONDA

IPC: C09J7/38 ,  C09J11/06 ,  C09J11/04 ,  C09J7/10

Abstract: Provided is a pressure-sensitive adhesive sheet that can temporarily fix an adherend in a peelable manner, the pressure-sensitive adhesive sheet being free from requiring the application of high-output laser light at the time of the peeling of the adherend and being capable of eliminating the need for a step of washing the adherend after the peeling. The pressure-sensitive adhesive sheet of the present invention includes a pressure-sensitive adhesive layer containing a UV absorber and an active energy ray-curable pressure-sensitive adhesive, wherein the pressure-sensitive adhesive sheet has a transmittance of 50% or less for light having a wavelength of 355 nm. In one embodiment, the pressure-sensitive adhesive layer has a thickness of 20 μm or less. In one embodiment, the pressure-sensitive adhesive sheet has a visible light transmittance of 50% or more.

公开(公告)号：US20220017789A1

公开(公告)日：2022-01-20

申请号：US17299374

申请日：2019-11-12

Applicant: NITTO DENKO CORPORATION

Inventor： Mizuho NAGATA ,  Yu TACHIKAWA ,  Keisuke HIRANO ,  Kiichiro MATSUSHITA

IPC: C09J7/38 ,  C09J11/06 ,  C08K5/23

Abstract: A pressure-sensitive adhesive composition includes a pressure-sensitive adhesive component and a gas generating particle dispersed in the pressure-sensitive adhesive component. A tensile elastic modulus at 25° C. of the pressure-sensitive adhesive composition is 5 MPa or less. A gas generation amount at which the gas generating particle is generated in the pressure-sensitive adhesive composition is 5 mL/g or more in terms of decane at 0° C. and 1013 hPa in a solid content of the pressure-sensitive adhesive composition.

公开(公告)号：US20230167337A1

公开(公告)日：2023-06-01

申请号：US17920205

申请日：2021-03-22

Applicant: NITTO DENKO CORPORATION

Inventor： Mizuho NAGATA ,  Yu TACHIKAWA ,  Tomokazu TAKAHASHI ,  Satoshi HONDA

IPC: C09J7/38 ,  C09J7/10 ,  C09J11/06 ,  C09J7/40

CPC classification number: C09J7/385 ,  C09J7/10 ,  C09J7/40 ,  C09J11/06

Abstract: Provided is a pressure-sensitive adhesive sheet that can temporarily fix an adherend in a peelable manner, the pressure-sensitive adhesive sheet being free from requiring high-output laser light irradiation at the time of the peeling of the adherend and being capable of eliminating the need for a step of washing the adherend after the peeling. The pressure-sensitive adhesive sheet of the present invention includes a pressure-sensitive adhesive layer containing a UV absorber and/or a photopolymerization initiator, wherein the pressure-sensitive adhesive sheet has a transmittance of 60% or less for light having a wavelength of 355 nm, and wherein the pressure-sensitive adhesive layer is a layer having an indentation elastic modulus at 23° C. of 25 MPa after irradiation with UV light having an integrated light quantity of 300 mJ/cm2.

公开(公告)号：US20220025223A1

公开(公告)日：2022-01-27

申请号：US17299836

申请日：2019-12-09

Applicant: NITTO DENKO CORPORATION

Inventor： Mizuho NAGATA ,  Yu TACHIKAWA ,  Keisuke HIRANO ,  Kiichiro MATSUSHITA

IPC: C09J7/38 ,  C09J11/06 ,  C08K5/23

Abstract: A pressure-sensitive adhesive composition contains an adhesive component and gas-generative particles dispersed in the adhesive component. When the gas-generative particles are subjected to particle size distribution measurement, in the particle size distribution of the gas-generative particles, a cumulative particle size (D90) where a cumulative value from the smallest particle size is 90% based on volume is 10.0 μm or less.

公开(公告)号：US20160367494A1

公开(公告)日：2016-12-22

申请号：US15185657

申请日：2016-06-17

Applicant: NITTO DENKO CORPORATION

Inventor： Yu TACHIKAWA ,  Satoshi AMEYAMA ,  Eriko ABE ,  Tetsuya NAKAMURA ,  Naoko URUSHIHARA ,  Jun ISHIKURA ,  Kazuhiro AOYAGI ,  Yoshitaka INOUE ,  Akira YOKOUCHI ,  Tomoya TANAKA

IPC: A61K9/70 ,  A61K31/27 ,  A61K31/428 ,  A61K31/137 ,  A61K47/14

CPC classification number: A61K9/7061 ,  A61K31/137 ,  A61K31/27 ,  A61K31/428 ,  A61K47/14 ,  A61L15/44 ,  A61L15/58 ,  C08L33/06

Abstract: A patch preparation includes a support and a pressure-sensitive adhesive layer formed on one surface of the support. The pressure-sensitive adhesive layer includes: (A) a polymer prepared by copolymerizing monomer components including a hydroxyl group-containing monomer and an alkyl (meth)acrylate monomer; (B) a polymer prepared by copolymerizing monomer components including a methyl methacrylate monomer and a butyl methacrylate monomer; and (C) a basic drug, provided that bisoprolol and a salt thereof are excluded.

Abstract translation: 贴片制剂包括支撑体和形成在支撑体的一个表面上的压敏粘合剂层。 压敏粘合剂层包括：（A）通过使包含含羟基的单体和（甲基）丙烯酸烷基酯单体的单体成分共聚而制备的聚合物; （B）通过使包含甲基丙烯酸甲酯单体和甲基丙烯酸丁酯单体的单体组分共聚制备的聚合物; 和（C）碱性药物，条件是排除比索洛尔及其盐。