公开(公告)号：US20160109631A1

公开(公告)日：2016-04-21

申请号：US14876946

申请日：2015-10-07

Applicant: NITTO DENKO CORPORATION

Inventor： Masaki MIZUTANI ,  Shou TAKARADA ,  Atsushi YASUI

IPC: G02B5/30 ,  C09J7/02

CPC classification number: G02B5/3033 ,  C09J7/38 ,  C09J7/405 ,  C09J2201/134 ,  C09J2201/622 ,  C09J2203/318 ,  C09J2467/006

Abstract: The optical film with a pressure sensitive adhesive on both sides includes a first pressure sensitive adhesive layer having a thickness of 3 μm to 30 μm on first main surface of an optical film, and a second pressure sensitive adhesive layer having a thickness of 50 μm or more on second main surface of the optical film. A first protective sheet and a second protective sheet are releasably attached on the first pressure sensitive adhesive layer and the second pressure sensitive adhesive layer, respectively. The residual stress of the second pressure sensitive adhesive layer S2 (N/cm2), the thickness of the first protective sheet Y (μm); and the thickness of the second protective sheet Z (μm) satisfy the following relationship: 20≦Y≦80; 45≦Z; and Y+0.17 Z+10.6 S2≧63.

Abstract translation: 具有两面的压敏粘合剂的光学膜包括在光学膜的第一主表面上具有3μm至30μm的厚度的第一压敏粘合剂层和厚度为50μm的第二压敏粘合剂层或 更多在光学膜的第二主表面上。 第一保护片和第二保护片分别可剥离地附接在第一压敏粘合剂层和第二压敏粘合剂层上。 第二压敏粘合剂层S2的残余应力（N / cm 2），第一保护片Y的厚度（μm）; 并且第二保护片Z（μm）的厚度满足以下关系：20＆nlE; Y＆nlE; 80; 45＆nlE; Z; Y + 0.17Z +10.6S2≥63。

公开(公告)号：US20160002505A1

公开(公告)日：2016-01-07

申请号：US14771524

申请日：2014-03-12

Applicant: NITTO DENKO CORPORATION

Inventor： Masaki MIZUTANI ,  Yuki HASEGAWA ,  Yusuke MOTEGI ,  Shou TAKARADA ,  Shinya YAMAMOTO ,  Takami HIKITA

IPC: C09J133/14 ,  G06F3/041 ,  C09J165/00

CPC classification number: C09J133/14 ,  C08F220/18 ,  C09J7/385 ,  C09J133/08 ,  C09J165/00 ,  C09J2203/318 ,  G06F3/0414 ,  C08F2220/1858 ,  C08F226/08 ,  C08F220/14 ,  C08F220/20

Abstract: The pressure sensitive adhesive of the present invention includes an acryl-based base polymer and a hydrogenated terpene phenolic resin having a softening point of 70° C. to 150° C. The hydrogenated terpene phenolic resin preferably has a terpene molar ratio of 0.1 to 0.7. The content of acryl-based base polymer is preferably 45 to 95 parts by weight based on total 100 parts by weight of the pressure sensitive adhesive composition. In addition, total content of the acryl-based base polymer and the hydrogenated terpene phenolic resin is preferably 70 parts by weight or more. The pressure sensitive adhesive of the present invention is hardly clouded even under a high-temperature and high-humidity environment, and has level difference followability, thus can be used by disposing between a front transparent plate and a touch panel, between a front transparent plate and an image display panel or between a touch panel and an image display panel.

Abstract translation: 本发明的压敏粘合剂包括丙烯酸类基础聚合物和软化点为70℃至150℃的氢化萜烯酚醛树脂。氢化萜烯酚醛树脂优选具有0.1至0.7的萜烯摩尔比 。 丙烯酸系基础聚合物的含量相对于100重量份的压敏粘合剂组合物优选为45〜95重量份。 此外，丙烯酸系基础聚合物和氢化萜烯酚醛树脂的总含量优选为70重量份以上。 即使在高温高湿环境下，本发明的压敏粘合剂几乎不会变得混浊，并且具有水平差的追随性，因此可以通过在前透明板和触摸面板之间设置在前透明板 以及图像显示面板或触摸面板与图像显示面板之间。

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：US20210230455A1

公开(公告)日：2021-07-29

申请号：US16967517

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

IPC: C09J7/38 ,  C09J133/08 ,  C09J5/02 ,  B32B7/06 ,  B32B7/12 ,  B32B43/00

Abstract: Provided is a method for peeling a PSA sheet adhered on a polarizing plate. The PSA sheet has a PSA layer. The PSA layer includes a layer A forming at least one surface of the PSA layer. Of the polarizing plate, the surface to which the PSA sheet is adhered is corona-treated or plasma-treated. The peeling method includes a water-peel step in which the PSA sheet is peeled from the polarizing plate, in a state where an aqueous liquid exits at the interface between the polarizing plate and the PSA sheet at the front line of peeling the PSA sheet from the polarizing plate, with the aqueous liquid allowed to further enter the interface following the movement of the peel front line.

公开(公告)号：US20190233683A1

公开(公告)日：2019-08-01

申请号：US16260459

申请日：2019-01-29

Applicant: NITTO DENKO CORPORATION

Inventor： Itsuhiro HATANAKA ,  Masahito NIWA ,  Taiki SHIMOKURI ,  Shou TAKARADA ,  Takahiro NONAKA ,  Keisuke HIRANO ,  Fumika KAWATAKE ,  Mika IKEMURA

IPC: C09J7/38 ,  C09J7/40 ,  C09J133/06 ,  C09J133/10

CPC classification number: C09J7/385 ,  C08L75/06 ,  C08L75/08 ,  C09J7/401 ,  C09J133/066 ,  C09J133/10 ,  C09J2205/114

Abstract: The pressure sensitive adhesive sheet is a sheet shaped pressure sensitive adhesive including an acryl-based base polymer. The acryl-based base polymer contains an acryl-based segment and a urethane-based segment, and a content of the urethane-based segment is 3 to 30 parts by weight based on 100 parts by weight of the acryl-based segment. The urethane-based segment includes at least one urethane chain selected from the group consisting of a polyether urethane and a polyester urethane. The content of the urethane-based segment other than the polyether urethane-based segment is 15 parts by weight or less based on 100 parts by weight of the acryl-based segment.

公开(公告)号：US20160237319A1

公开(公告)日：2016-08-18

申请号：US15042690

申请日：2016-02-12

Applicant: NITTO DENKO CORPORATION

Inventor： Shou TAKARADA ,  Masaki MIZUTANI ,  Atsushi YASUI ,  Shinya YAMAMOTO

IPC: C09J7/02 ,  B32B27/26 ,  B32B27/30 ,  G02B5/30 ,  B32B27/08

CPC classification number: B32B27/08 ,  B32B7/02 ,  B32B7/06 ,  B32B7/12 ,  B32B27/308 ,  B32B27/32 ,  B32B27/36 ,  B32B2250/24 ,  B32B2255/10 ,  B32B2255/26 ,  B32B2270/00 ,  B32B2307/4026 ,  B32B2307/42 ,  B32B2307/51 ,  B32B2307/514 ,  B32B2307/7145 ,  B32B2307/732 ,  B32B2307/748 ,  B32B2457/00 ,  B32B2457/208 ,  B32B2551/00 ,  C09D123/06 ,  C09J7/385 ,  C09J133/08 ,  C09J2201/36 ,  C09J2203/318 ,  G02B5/3025

Abstract: The optical film with pressure sensitive adhesive comprises an optical film and a front-side pressure sensitive adhesive sheet. The front-side pressure sensitive adhesive sheet is a laminated pressure sensitive adhesive sheet and includes a first pressure sensitive adhesive layer disposed in contact with the optical film, and a second pressure sensitive adhesive layer disposed at the furthest from the optical film. The first pressure sensitive adhesive layer has a storage elastic modulus of 9×103 Pa or less at 150° C., and a ratio G′20/G′150 of 20 or more, where G′20 is a storage elastic modulus at 20° C. and G′150 is a storage elastic modulus at 150° C. The second pressure sensitive adhesive layer has a storage elastic modulus of 4×105 Pa or less at 20° C., and a storage elastic modulus of 1×104 Pa or more at 150° C.

Abstract translation: 具有压敏粘合剂的光学膜包括光学膜和前侧压敏粘合片。 前侧压敏粘合片是层叠压敏粘合片，并且包括与光学膜接触设置的第一压敏粘合剂层和设置在距离光学膜最远的第二压敏粘合剂层。 第一压敏粘合剂层在150℃下的储能弹性模量为9×10 3 Pa以下，G'20 / G'150为20以上，G'20为20时的储能弹性模量 ℃，G'150是150℃下的储能弹性模量。第二压敏粘合剂层在20℃下的储能弹性模量为4×10 5 Pa以下，储存弹性模量为1×10 4 Pa以上150℃

公开(公告)号：US20130158221A1

公开(公告)日：2013-06-20

申请号：US13717986

申请日：2012-12-18

Applicant: NITTO DENKO CORPORATION

Inventor： Tomohide BANBA ,  Hiroaki KISHIOKA ,  Takahiro NONAKA ,  Masatomo NATSUI ,  Hiroaki FUMOTO ,  Shou TAKARADA ,  Takashi SUZUKI

IPC: C09J139/06 ,  C09J133/12 ,  C09J133/14

CPC classification number: C09J139/06 ,  C09J133/06 ,  C09J133/12 ,  C09J133/14 ,  C09J133/26

Abstract: The present invention provides an optical pressure-sensitive adhesive sheet which can control the change in capacitance, which cause malfunction, when the optical pressure-sensitive adhesive sheet is applied to an optical member. The present invention provides an optical pressure-sensitive adhesive sheet including a pressure-sensitive adhesive layer, wherein a relative dielectric constant at a frequency of 1 MHz is 2 to 8, and a dielectric tangent at a frequency of 1 MHz is more than 0 and 0.2 or less.

Abstract translation: 本发明提供一种光学压敏粘合片，当将光学粘合片施加到光学构件上时，可以控制电容的变化，这导致故障。 本发明提供一种含有粘合剂层的光学粘合片，其中1MHz的频率下的相对介电常数为2〜8，频率为1MHz的介质正切大于0， 0.2以下。