公开(公告)号：US11319462B2

公开(公告)日：2022-05-03

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 ,  C09J7/10 ,  C09J7/20 ,  C09J133/16 ,  C09J133/10 ,  C09J133/08 ,  C09J175/16 ,  C09J175/06 ,  C09J175/04 ,  C09J175/08 ,  C09J175/14 ,  C09J7/40 ,  C09J133/06

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：US20130123450A1

公开(公告)日：2013-05-16

申请号：US13673078

申请日：2012-11-09

Applicant: NITTO DENKO CORPORATION

Inventor： Shou Takarada ,  Takahiro Nonaka

IPC: C09J139/06

CPC classification number: C09J139/06

Abstract: A pressure-sensitive adhesive sheet excellent in the level difference absorbability, in particular, in the level difference absorbability for a high level difference, and also excellent in workability is provided. The pressure-sensitive adhesive sheet of the present invention is a pressure-sensitive adhesive sheet including a pressure-sensitive adhesive layer, wherein the pressure-sensitive adhesive layer includes an acrylic polymer obtained by polymerizing monomer components; the monomer components includes alkyl (meth)acrylate having a linear or branched alkyl group having 10 to 16 carbon atoms; the content of the alkyl (meth)acrylate is 70% by weight or more in relation to the total amount (100% by weight) of the monomers; and the gel fraction of the pressure-sensitive adhesive layer is 50% by weight or more.

Abstract translation: 提供了水平差吸收性，特别是高水平差的水平差吸收性和加工性优异的粘合片。 本发明的压敏粘合片是包含压敏粘合剂层的压敏粘合片，其中压敏粘合剂层包括通过聚合单体组分而获得的丙烯酸类聚合物; 单体组分包括具有10至16个碳原子的直链或支链烷基的（甲基）丙烯酸烷基酯; （甲基）丙烯酸烷基酯的含量相对于单体的总量（100重量％）为70重量％以上。 并且压敏粘合剂层的凝胶分数为50重量％以上。

公开(公告)号：US20180157125A1

公开(公告)日：2018-06-07

申请号：US15579645

申请日：2016-06-14

Applicant: NITTO DENKO CORPORATION

Inventor： Atsushi Yasui ,  Shou Takarada ,  Shinya Yamamoto ,  Ryohei Sawazaki

IPC: G02F1/1337 ,  B32B27/30 ,  C09J133/06 ,  G02B5/30 ,  G02F1/1333 ,  G02F1/1335

CPC classification number: G02F1/133711 ,  B32B27/00 ,  B32B27/30 ,  C09J7/22 ,  C09J7/385 ,  C09J133/06 ,  C09J133/08 ,  C09J2201/128 ,  C09J2203/318 ,  C09J2433/00 ,  G02B1/16 ,  G02B5/3016 ,  G02B5/3033 ,  G02F1/1333 ,  G02F1/13338 ,  G02F1/1335 ,  G02F1/133528 ,  H01L51/5281 ,  C08F2220/1858 ,  C08F2220/1891 ,  C08F226/10

Abstract: A double-sided pressure-sensitive adhesive-layer-attached polarizing film has a polarizing film nearest to a viewer-side of an image display device among at least one polarizing film, a pressure-sensitive adhesive layer A located on the viewer-side, and a pressure-sensitive adhesive layer B on a side of the polarizing film that is opposite to the pressure-sensitive adhesive layer A. The pressure-sensitive adhesive layers A and B are equipped with separators SA and SB, respectively. The polarizing film is a single-side protected polarizing film having a polarizer of 15 μm or less thickness and having a transparent protective film on only a single side of the polarizer. The pressure-sensitive adhesive layer B is located on the polarizer side of the single-side protected polarizing film. The pressure-sensitive adhesive layer A has a thickness of 25 μm or more; and the pressure-sensitive adhesive layer B has a thickness of 25 μm or less.

公开(公告)号：US11319470B2

公开(公告)日：2022-05-03

申请号：US16260563

申请日：2019-01-29

Applicant: NITTO DENKO CORPORATION

Inventor： Masahito Niwa ,  Itsuhiro Hatanaka ,  Taiki Shimokuri ,  Shou Takarada ,  Takahiro Nonaka ,  Keisuke Hirano ,  Fumika Kawatake ,  Mika Ikemura

IPC: C09J175/16 ,  C09J7/38 ,  C09J133/14 ,  C09J175/08 ,  C09J7/10 ,  C09J7/20 ,  C09J175/06 ,  C09J7/25 ,  G06F3/041 ,  C08F220/10

Abstract: A pressure sensitive adhesive includes an acryl-based base polymer. The acryl-based base polymer contains an acryl-based segment and a urethane-based segment. In the acryl-based base polymer, the content of the urethane-based segment is 3 to 20 parts by weight based on 100 parts by weight of the acryl-based segment. A pressure sensitive adhesive sheet can be obtained by applying a pressure sensitive adhesive composition on a substrate in a layer form. The pressure sensitive adhesive composition may be curable and may include a polymerization initiator. In formation of the pressure sensitive adhesive sheet, the curable pressure sensitive adhesive composition may be, as necessary.

公开(公告)号：US09841545B2

公开(公告)日：2017-12-12

申请号：US14876946

申请日：2015-10-07

Applicant: NITTO DENKO CORPORATION

Inventor： Masaki Mizutani ,  Shou Takarada ,  Atsushi Yasui

IPC: B32B7/12 ,  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.

公开(公告)号：US09650547B2

公开(公告)日：2017-05-16

申请号：US13954686

申请日：2013-07-30

Applicant: NITTO DENKO CORPORATION

Inventor： Kiyoe Shigetomi ,  Shou Takarada ,  Masahiko Ando ,  Katsuhiko Kamiya ,  Takahiro Nonaka

IPC: C09J7/02 ,  C09J133/08 ,  C09J133/14 ,  B32B7/12 ,  B32B3/10 ,  C08F20/68 ,  C08F220/68 ,  C08K5/00

CPC classification number: C09J7/0217 ,  B32B3/10 ,  B32B7/12 ,  C08F20/68 ,  C08F220/68 ,  C08K5/0025 ,  C09J7/385 ,  C09J133/08 ,  C09J133/14 ,  C09J2201/606 ,  C09J2203/318 ,  C09J2433/00 ,  Y10T428/24851 ,  Y10T428/2891 ,  Y10T428/31935

Abstract: Provided is a pressure-sensitive adhesive capable of realizing a pressure-sensitive adhesive layer having satisfactory adhesion performance and a high ink step absorbability. A radiation-curable pressure-sensitive adhesive, which contains a (meth)acryl-based polymer obtained by polymerizing a monomer component containing 30 to 90% by weight of an alkyl(meth)acrylate having an alkyl group of 10 to 22 carbon atoms at an ester end, and having a radically polymerizable functional group containing a carbon-carbon double bond.

公开(公告)号：US20160185083A1

公开(公告)日：2016-06-30

申请号：US14978903

申请日：2015-12-22

Applicant: NITTO DENKO CORPORATION

Inventor： Atsushi Yasui ,  Shou Takarada ,  Masaki Mizutani ,  Hirofumi Katami ,  Shinya Yamamoto

IPC: B32B7/12 ,  G02F1/1335 ,  G02B5/30 ,  B32B27/08 ,  B32B27/30

CPC classification number: B32B7/12 ,  B32B3/08 ,  B32B9/045 ,  B32B17/064 ,  B32B23/08 ,  B32B27/08 ,  B32B27/28 ,  B32B27/304 ,  B32B27/308 ,  B32B27/32 ,  B32B27/36 ,  B32B2255/10 ,  B32B2255/26 ,  B32B2307/21 ,  B32B2307/306 ,  B32B2307/4026 ,  B32B2307/412 ,  B32B2307/42 ,  B32B2307/514 ,  B32B2307/542 ,  B32B2307/732 ,  B32B2457/202 ,  C09J7/38 ,  C09J7/385 ,  C09J7/40 ,  C09J133/08 ,  C09J133/10 ,  C09J133/12 ,  C09J2201/606 ,  G02B5/3033 ,  G02F1/133528 ,  G02F2202/28

Abstract: A pressure-sensitive-adhesive-layer-attached polarizing film, comprising: a polarizing film which is provided nearest to a viewer-side of an image display device among at least one polarizing film used in the device, a pressure-sensitive adhesive layer A arranged at a viewer-side of the polarizing film, and a pressure-sensitive adhesive layer B arranged at a side of the polarizing film that is opposite to the viewer-side of the polarizing film; wherein the pressure-sensitive adhesive layer A is a multiple pressure-sensitive adhesive layer having at least a first pressure-sensitive adhesive layer (a) and a second pressure-sensitive adhesive layer (b) in an order of the recited layers from the outermost surface side of the pressure-sensitive adhesive layer A.

Abstract translation: 1.一种带有压敏粘合剂层的偏光膜，其特征在于，包括：在所述装置中使用的至少一种偏光膜中最靠近图像显示装置的观察者侧设置的偏振膜，压敏粘合剂层A 布置在偏振膜的观察者侧，以及布置在偏振膜的与偏振膜的观察者侧相对的一侧的压敏粘合剂层B; 其中，所述粘合剂层A为具有至少第一粘合剂层（a）和第二粘合剂层（b）的多层压敏粘合剂层，所述第二粘合剂层从所述最外层 压敏粘合剂层A的表面侧。

公开(公告)号：US20140039128A1

公开(公告)日：2014-02-06

申请号：US13954329

申请日：2013-07-30

Applicant: NITTO DENKO CORPORATION

Inventor： Kiyoe Shigetomi ,  Shou Takarada ,  Masahiko Ando ,  Katsuhiko Kamiya ,  Takahiro Nonaka ,  Shinya Yamamoto

IPC: C09J7/02 ,  C09J133/14

CPC classification number: C09J133/14 ,  C09J7/22 ,  C09J7/38 ,  C09J133/08 ,  C09J2203/318 ,  C09J2205/31 ,  C09J2433/00

Abstract: An object of the present invention is to provide a radiation-curable pressure-sensitive adhesive layer that satisfies both reworkability and adhesion reliance. Further, another object of the present invention is to provide a pressure-sensitive adhesive sheet containing the radiation-curable pressure-sensitive adhesive layer. The invention relates to a radiation-curable pressure-sensitive adhesive layer, which has an adhesive strength of 1.0 N/20 mm or less before radiation curing and an adhesive strength of 3.0 N/20 mm or more after radiation curing, and a peeling adhesive strength of 40.0 N/(20 mm×20 mm) or less before radiation curing, to an acrylic plate.

Abstract translation: 本发明的目的是提供一种满足再加工性和粘合依赖性的可辐射固化型压敏粘合剂层。 此外，本发明的另一个目的是提供一种含有可辐射固化压敏粘合剂层的压敏粘合片。 本发明涉及一种辐射固化型粘合剂层，其辐射固化前的粘合强度为1.0N / 20mm以下，辐射固化后的粘合强度为3.0N / 20mm以上，剥离粘合剂 强度为辐射固化前的40.0N /（20mm×20mm）以下的丙烯酸板。

公开(公告)号：US12071573B2

公开(公告)日：2024-08-27

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 ,  B32B7/06 ,  B32B27/18 ,  B32B27/30 ,  B32B37/12 ,  B32B37/18 ,  B32B38/10 ,  C09J11/06 ,  C09J11/08 ,  C09J133/08

CPC classification number: C09J7/385 ,  B32B7/06 ,  B32B27/18 ,  B32B27/308 ,  B32B37/12 ,  B32B37/182 ,  B32B38/10 ,  C09J11/06 ,  C09J11/08 ,  C09J133/08 ,  B32B2037/1276 ,  B32B2307/728 ,  B32B2333/12 ,  B32B2405/00 ,  C09J2301/408 ,  C09J2301/502 ,  C09J2433/00 ,  C09J2467/006

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 NO 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：US11970644B2

公开(公告)日：2024-04-30

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

CPC classification number: C09J7/385 ,  B32B7/06 ,  B32B7/12 ,  B32B43/006 ,  C09J5/02 ,  C09J133/08 ,  B32B2307/42 ,  C09J2301/312 ,  C09J2301/416 ,  C09J2301/502 ,  Y10T156/1111 ,  Y10T156/1126 ,  Y10T156/1928

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.