公开(公告)号：US20240368435A1

公开(公告)日：2024-11-07

申请号：US18773082

申请日：2024-07-15

Applicant: NITTO DENKO CORPORATION

Inventor： Naofumi KOSAKA ,  Yosuke SHIMIZU ,  Satoshi HONDA ,  Taiki SHIMOKURI ,  Shou TAKARADA ,  Masayuki SATAKE ,  Kenichi OKADA ,  Atsushi TAKASHIMA ,  Ginji MIZUHARA ,  Masayuki OKAMOTO ,  Ryoko ASAI

IPC: C09J7/38 ,  B32B7/06 ,  B32B27/18 ,  B32B27/30 ,  B32B37/12 ,  B32B37/18 ,  B32B38/10 ,  C09J11/06 ,  C09J11/08 ,  C09J133/08

Abstract: Provided is a PSA sheet having a PSA layer. The PSA layer includes a layer A forming at least one surface thereof. The PSA sheet has an adhesive strength N0 of 2.0 N/10 mm or greater, after one day at room temperature following application of the layer A side to a surface of an alkaline float glass plate as an adherend having a contact angle of 5°-10° with distilled water; has an N1 to N0 reduction rate of 30% or lower, wherein N1 is a water-resistant adhesive strength measured after stored at room temperature for one day, immersed in water for 30 minutes, taken out from the water and then residual water is wiped off, and has an N2 to N0 reduction rate of 40% or higher, wherein N2 is a water-peel strength measured after stored at room temperature for one day, 20 μL distilled water is dropped onto the adherend and is allowed to enter a PSA layer/adherend interfacial edge. N2 is measured at a tensile speed of 300 mm/min at a peel angle of 180°.

公开(公告)号：US20190292425A1

公开(公告)日：2019-09-26

申请号：US16465475

申请日：2017-11-29

Applicant: NITTO DENKO CORPORATION

Inventor： Yoshiko KIRA ,  Kensuke TANI ,  Ryoko ASAI ,  Kayo SHIMOKAWA ,  Kenichi OKADA

IPC: C09J153/02 ,  C09J7/32

Abstract: The present invention relates to an adhesive composition containing a base polymer and a moisture-curable component, wherein the base polymer contains a polymer having no functional group which reacts with the moisture-curable component, and a water content of the base polymer after storage at 25° C. and 50% RH for 24 hours is 0.1% by weight or less, and wherein the moisture-curable component is contained in an unreacted state, an adhesive layer made from the adhesive composition, and an adhesive sheet including the adhesive layer.

公开(公告)号：US20220186093A1

公开(公告)日：2022-06-16

申请号：US17684126

申请日：2022-03-01

Applicant: NITTO DENKO CORPORATION

Inventor： Ryoko ASAI ,  Kayo SHIMOKAWA ,  Kensuke TANI ,  Yoshiko KIRA ,  Kenichi OKADA

IPC: C09J153/02 ,  C09J7/32 ,  C09J11/06 ,  C09J7/20 ,  C09J7/00 ,  C09J11/08 ,  C09J201/00 ,  C09J133/00 ,  C09J121/00 ,  C08G18/76 ,  C09J123/22 ,  C09J133/10 ,  C09J135/00

Abstract: The present invention relates to an adhesive composition containing a base polymer, a water-absorbing material, and a moisture-curable component, wherein the moisture-curable component is contained in an unreacted state, an adhesive layer made from the adhesive composition, and an adhesive sheet including the adhesive layer.

公开(公告)号：US20210214587A1

公开(公告)日：2021-07-15

申请号：US16967504

申请日：2019-01-28

Applicant: Nitto Denko Corporation

Inventor： Naofumi KOSAKA ,  Yosuke SHIMIZU ,  Satoshi HONDA ,  Taiki SHIMOKURI ,  Shou TAKARADA ,  Masayuki SATAKE ,  Kenichi OKADA ,  Atsushi TAKASHIMA ,  Ginji MIZUHARA ,  Masayuki OKAMOTO ,  Ryoko ASAI

IPC: C09J7/38 ,  C09J11/08 ,  C09J11/06 ,  C09J133/08 ,  B32B27/30 ,  B32B27/18 ,  B32B7/06 ,  B32B37/12 ,  B32B37/18 ,  B32B38/10

Abstract: Provided is a PSA sheet having a PSA layer. The PSA layer includes a layer A forming at least one surface thereof. The PSA sheet has an adhesive strength N0 of 2.0 N/10 mm or greater, after one day at room temperature following application of the layer A side to a surface of an alkaline float glass plate as an adherend having a contact angle of 5°-10° with distilled water; has an N1 to N0 reduction rate of 30% or lower, wherein N1 is a water-resistant adhesive strength measured after stored at room temperature for one day, immersed in water for 30 minutes, taken out from the water and then residual water is wiped off; and has an N2 to N0 reduction rate of 40% or higher, wherein N2 is a water-peel strength measured after stored at room temperature for one day, 20 μL distilled water is dropped onto the adherend and is allowed to enter a PSA layer/adherend interfacial edge. N2 is measured at a tensile speed of 300 mm/min at a peel angle of 180°.

公开(公告)号：US20220275254A1

公开(公告)日：2022-09-01

申请号：US17632192

申请日：2020-07-28

Applicant: NITTO DENKO CORPORATION

Inventor： Ryoko ASAI ,  Naofumi KOSAKA ,  Yosuke SHIMIZU

IPC: C09J7/38 ,  C09J4/06 ,  C09J11/06

Abstract: Provided is a PSA sheet having a PSA layer. The PSA layer has a multilayer structure comprising a layer A forming one face of the PSA layer and a layer B placed on the backside of the layer A. The layer B is a photo-crosslinkable PSA layer comprising a photo-crosslinkable polymer.

公开(公告)号：US20210348036A1

公开(公告)日：2021-11-11

申请号：US17262584

申请日：2019-07-29

Applicant: NITTO DENKO CORPORATION

Inventor： Masayuki OKAMOTO ,  Naofumi KOSAKA ,  Satoshi HONDA ,  Yosuke SHIMIZU ,  Ryoko ASAI

IPC: C09J7/38 ,  C09J7/10

Abstract: Provided is an optical PSA composition that can be easily peeled using an aqueous liquid such as water and has sufficient adhesive strength. An optical PSA composition comprising an acrylic polymer is provided. The PSA composition comprises at least one species of compound A selected among surfactants and compounds having polyoxyalkylene backbones. The monomers forming the acrylic polymer comprises less than 20 wt % alkoxyalkyl (meth)acrylate and less than 20 wt % alkoxypolyalkylene glycol (meth)acrylate. Alternatively, the compound A content is less than 1 part by weight to 100 parts by weight of the acrylic polymer.

公开(公告)号：US20180079934A1

公开(公告)日：2018-03-22

申请号：US15564107

申请日：2016-04-05

Applicant: NITTO DENKO CORPORATION

Inventor： Satoru SUZUKI ,  Tomonari NAITO ,  Tsuyoshi HIRAMATSU ,  Ryoko ASAI ,  Naoki KURATA

IPC: C09J7/02 ,  C09J133/08

CPC classification number: C09J133/08 ,  B32B27/00 ,  B32B27/08 ,  B32B27/30 ,  B32B27/308 ,  B32B2250/02 ,  B32B2255/10 ,  B32B2255/26 ,  B32B2307/51 ,  B32B2307/748 ,  B32B2307/754 ,  B32B2405/00 ,  B32B2605/12 ,  B63B59/04 ,  C09J7/0275 ,  C09J7/29 ,  C09J201/00 ,  C09J2201/162 ,  C09J2201/606 ,  C09J2423/046 ,  C09J2433/00 ,  C09J2483/006

Abstract: The present invention provides a pressure-sensitive adhesive tape for preventing adhesion of aquatic organisms, which includes an antifouling layer, a base material layer and a pressure-sensitive adhesive layer in this order, which has the base material layer composed of an inexpensive material, and which has high adhesion between the antifouling layer and the base material layer without performing the easy adhesion treatment, for example, a primer treatment or a corona treatment. A pressure-sensitive adhesive tape for preventing adhesion of aquatic organisms of the present invention comprises an antifouling layer, a base material layer and a pressure-sensitive adhesive layer in this order, wherein the base material layer contains an ionomer resin.

公开(公告)号：US20230144464A1

公开(公告)日：2023-05-11

申请号：US17802756

申请日：2021-02-24

Applicant: NITTO DENKO CORPORATION

Inventor： Yosuke SHIMIZU ,  Naofumi KOSAKA ,  Ryoko ASAI ,  Kenta KUMAKURA

IPC: C09J133/08 ,  C09J11/06 ,  C08F220/18 ,  C08F220/20 ,  C08F226/10 ,  C08F2/48

CPC classification number: C09J133/08 ,  C08F2/48 ,  C08F220/20 ,  C08F220/1804 ,  C08F220/1806 ,  C08F226/10 ,  C09J11/06 ,  C09J2301/124 ,  C09J2301/302 ,  C09J2301/416 ,  C09J2301/502 ,  C09J2433/001

Abstract: Provided is a PSA sheet that can combine bonding reliability and peeling removability, and further can be peeled off without causing deformation or damage to the adherend in various peeling modes. The PSA sheet provided by this invention has a PSA layer. The PSA sheet has a water-peel strength of 2 N/10 mm or less. The PSA sheet further has a stress at 100 % elongation of less than 30 MPa as well as a multiplication product (σf-εf) of fracture stress σf (MPa) and fracture strain εf (%) of 250 or greater.

公开(公告)号：US20220275250A1

公开(公告)日：2022-09-01

申请号：US17632261

申请日：2020-07-28

Applicant: NITTO DENKO CORPORATION

Inventor： Ryoko ASAI ,  Naofumi KOSAKA ,  Yosuke SHIMIZU

IPC: C09J7/38 ,  C09J201/06 ,  C09J11/06

Abstract: Provided is a photo-crosslinkable PSA comprising a polymer having side-chain benzophenone structures. The photo-crosslinkable PSA is a cured product of a PSA composition comprising an ethylenically unsaturated compound and a benzophenone structure-containing component. The photo-crosslinkable PSA has VOC emissions of 500 μg/g or less. Also provided is a PSA sheet having a PSA layer formed from the photo-crosslinkable PSA.

公开(公告)号：US20200063004A1

公开(公告)日：2020-02-27

申请号：US16465492

申请日：2017-11-29

Applicant: NITTO DENKO CORPORATION

Inventor： Ryoko ASAI ,  Kayo SHIMOKAWA ,  Kensuke TANI ,  Yoshiko KIRA ,  Kenichi OKADA

IPC: C09J133/10 ,  C09J121/00 ,  C09J135/00 ,  C09J123/22 ,  C09J7/20 ,  C08G18/76

Abstract: The present invention relates to an adhesive composition containing a base polymer, a water-absorbing material, and a moisture-curable component, wherein the moisture-curable component is contained in an unreacted state, an adhesive layer made from the adhesive composition, and an adhesive sheet including the adhesive layer.