公开(公告)号：US20160209566A1

公开(公告)日：2016-07-21

申请号：US15000322

申请日：2016-01-19

Applicant: NITTO DENKO CORPORATION

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

IPC: G02B5/30 ,  G02F1/1335

CPC classification number: G02B5/3033 ,  G02F1/133528 ,  G02F2202/28

Abstract: A double-sided pressure-sensitive-adhesive-layer-attached polarizing film which is good in yield ratio, and satisfies step-absorbing capability provided that the film is a double-sided pressure-sensitive-adhesive-layer-attached polarizing film having a pressure-sensitive adhesive layer on each of the two surfaces of 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, and having the structure and properties as described.

Abstract translation: 具有良好的屈服比，并且满足阶段吸收能力的双面压敏粘合剂层附着偏光膜，只要该膜是双面粘合剂粘合剂层的偏振膜，其具有 在装置中使用的至少一个偏振膜中，最靠近图像显示装置的观察者侧的偏振膜的两个表面的每个表面上具有压敏粘合剂层，并且具有如上所述的结构和性质。

公开(公告)号：US20160102229A1

公开(公告)日：2016-04-14

申请号：US14876948

申请日：2015-10-07

Applicant: NITTO DENKO CORPORATION

Inventor： Shou TAKARADA ,  Masaki MIZUTANI ,  Atsushi YASUI

IPC: C09J7/02 ,  B32B37/12 ,  B32B37/14 ,  C09J133/08

CPC classification number: C09J133/08 ,  B32B37/003 ,  B32B37/182 ,  B32B2037/1253 ,  B32B2307/412 ,  B32B2307/42 ,  B32B2457/20 ,  C09J7/22 ,  C09J7/38 ,  C09J133/066 ,  C09J2201/134 ,  C09J2201/622 ,  C09J2203/318 ,  C09J2433/00

Abstract: The optical film with a pressure sensitive adhesive comprises an optical film including a polarizing plate, a first pressure sensitive adhesive layer provided on first main surface of the optical film, and a second pressure sensitive adhesive layer provided on second main surface of the optical film. The first pressure sensitive adhesive layer has a thickness of 30 μm or more. In the first pressure sensitive adhesive layer, a fluidity of a pressure sensitive adhesive at an end surface is lower than a fluidity of the pressure sensitive adhesive at an in-plane central part.

Abstract translation: 具有压敏粘合剂的光学膜包括光学膜，该光学膜包括偏光板，设置在光学膜的第一主表面上的第一压敏粘合剂层和设置在光学膜的第二主表面上的第二压敏粘合剂层。 第一压敏粘合剂层的厚度为30μm以上。 在第一压敏粘合剂层中，端面处的压敏粘合剂的流动性低于平面中心部分处的压敏粘合剂的流动性。

公开(公告)号：US20230244020A1

公开(公告)日：2023-08-03

申请号：US17766453

申请日：2020-10-05

Applicant: NITTO DENKO CORPORATION

Inventor： Takanobu YANO ,  Shou TAKARADA ,  Takeshi NAKANO ,  Koji SHITARA ,  Yoshitaka SUGITA ,  Kazutaka MINOURA

IPC: G02B5/30 ,  H10K59/40 ,  G02B1/14 ,  H10K59/80

CPC classification number: G02B5/305 ,  H10K59/40 ,  G02B1/14 ,  G02B5/3083 ,  H10K59/8793 ,  H10K59/873

Abstract: The multilayer structure used to be deformed by bending with a first member outside, includes the first member, a first adhesive layer, a second member having one surface joined to one surface of the first member at least via the first adhesive layer, a second adhesive layer, and a first structure having one surface joined to the other surface of the second member at least via the second adhesive layer. The first structure includes a third member on a surface in contact with the second adhesive layer, including, on a surface in contact with the second adhesive layer, a layer that is likely to be broken when deformed. Hardness of each of the first and second adhesive layer is determined such that when the multilayer structure is deformed, the extension of the layer likely to be broken is reduced to a value lower than the tensile breaking extension thereof.

公开(公告)号：US20170101553A1

公开(公告)日：2017-04-13

申请号：US15287921

申请日：2016-10-07

Applicant: NITTO DENKO CORPORATION

Inventor： Shou TAKARADA ,  Eiko SUEFUSA ,  Atsushi YASUI ,  Ryohei SAWAZAKI

IPC: C09J7/02 ,  H01L27/32 ,  G02F1/1335 ,  C09J133/06

CPC classification number: C09J133/062 ,  B29D11/00644 ,  B29D11/0073 ,  B32B2457/20 ,  B32B2457/202 ,  C08F220/18 ,  C09J4/06 ,  C09J7/22 ,  C09J7/38 ,  C09J133/08 ,  C09J133/10 ,  C09J133/12 ,  C09J133/14 ,  C09J2201/622 ,  C09J2203/318 ,  C09J2205/114 ,  C09J2429/006 ,  C09J2433/00 ,  G02B5/3033 ,  G02F1/133528 ,  G02F2001/133311 ,  G02F2001/133331 ,  G02F2201/50 ,  G02F2202/28 ,  H01L27/3232 ,  Y10T428/1036 ,  Y10T428/1041 ,  Y10T428/105 ,  Y10T428/1059 ,  Y10T428/1077 ,  Y10T428/1082 ,  C08F2220/1858 ,  C08F2220/1891 ,  C08F220/20 ,  C08F226/10 ,  C08F220/06 ,  C08F2220/1825 ,  C08K5/5435

Abstract: The pressure sensitive adhesive sheet has a thickness of D, a water-vapor permeability of X, and a moisture content of Y. XD2 is 2.7×10−6 g/24 h or more and Y/D is 47 m−1 or less. A base polymer of a pressure sensitive adhesive composition that forms the pressure sensitive adhesive sheet is substantially free from an organic acid monomer component as monomer units. The pressure sensitive adhesive sheet is suitably used for bonding a polarizing plate to a transparent member disposed on a viewing-side of an image display device.

公开(公告)号：US20140037952A1

公开(公告)日：2014-02-06

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 ,  B32B3/10 ,  B32B7/12

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.

Abstract translation: 提供一种能够实现具有令人满意的粘合性能和高油墨阶段吸收性的压敏粘合剂层的压敏粘合剂。 含有（甲基）丙烯酸类聚合物的辐射固化型压敏粘合剂，其通过使含有30〜90重量％的具有碳原子数为10〜22的烷基的（甲基）丙烯酸烷基酯的单体成分聚合而得到 酯端，并且具有含有碳 - 碳双键的自由基聚合性官能团。

公开(公告)号：US20210246338A1

公开(公告)日：2021-08-12

申请号：US17053875

申请日：2020-01-20

Applicant: NITTO DENKO CORPORATION

Inventor： Shou TAKARADA ,  Taiki SHIMOKURI ,  Minako NODA

IPC: C09J7/38 ,  G02B5/30 ,  C09J7/40 ,  C09J133/06 ,  C09J133/08

Abstract: A pressure sensitive adhesive sheet (11) according to the present invention contains an acryl-based base polymer having a crosslinked structure, and an acryl-based oligomer having a glass transition temperature of 60° C. or higher. The pressure sensitive adhesive sheet has a storage elastic modulus G′25 of 5 to 75 kPa at 25° C. and 1 Hz, a loss tangent tan δ25 of 0.2 to 0.45 at 25° C. and 1 Hz, a loss tangent tan δ100 of 0.2 to 0.45 at 100° C. and 1 Hz, a difference between the tan 625 and the tan δ100 of −0.09 to 0.09, and a glass transition temperature of −15° C. or lower.

公开(公告)号：US20190243041A1

公开(公告)日：2019-08-08

申请号：US16269952

申请日：2019-02-07

Applicant: NITTO DENKO CORPORATION

Inventor： Shou TAKARADA ,  Yasutaka ISHIHARA ,  Minako NODA

IPC: G02B5/30 ,  C09J7/38 ,  C09J133/10

CPC classification number: G02B5/305 ,  C09J7/385 ,  C09J133/10

Abstract: Disclosed is a pressure sensitive adhesive-equipped polarizing plate (100) including a first pressure sensitive adhesive sheet arranged on one principal surface of a polarizing plate containing a polyvinyl alcohol-based polarizer. The polarizing plate includes a transparent protective film bonded to the second principal surface of the polarizer, and a urethane layer having a thickness of 0.1 to 10 μm disposed in contact with the first principal surface of the polarizer. The value XD2 of the first pressure sensitive adhesive sheet disposed on the urethane layer is 1×10−7 g/24 h or more, where X is a water-vapor permeability of the pressure sensitive adhesive sheet, and D is a thickness of the pressure sensitive adhesive sheet.

公开(公告)号：US20160355704A1

公开(公告)日：2016-12-08

申请号：US15172462

申请日：2016-06-03

Applicant: NITTO DENKO CORPORATION

Inventor： Shou TAKARADA ,  Atsushi YASUI

IPC: C09J7/02 ,  B32B37/12 ,  B32B38/10 ,  C09J5/06 ,  G02B5/30

CPC classification number: B32B37/12 ,  B32B37/0007 ,  B32B37/0015 ,  B32B38/10 ,  B32B2038/0076 ,  B32B2307/412 ,  B32B2307/42 ,  B32B2309/105 ,  B32B2457/208 ,  C09J7/38 ,  C09J7/40 ,  C09J2201/622 ,  C09J2203/318 ,  C09J2205/31 ,  C09J2433/00 ,  G02B5/3033

Abstract: A pressure sensitive adhesive sheet and an optical film with a pressure sensitive adhesive are disclosed. The pressure sensitive adhesive sheet comprises a first pressure sensitive adhesive layer and a first protective sheet releasably attached to one surface of the first pressure sensitive adhesive layer. The first pressure sensitive adhesive layer contains an ultraviolet curable pressure sensitive adhesive. The first protective sheet has a transmittance of 1% or less to an ultraviolet ray with a wavelength of 360 nm.

Abstract translation: 公开了一种压敏粘合片和具有压敏粘合剂的光学膜。 压敏粘合片包括第一压敏粘合剂层和可释放地附着到第一压敏粘合剂层的一个表面上的第一保护片。 第一压敏粘合剂层含有紫外线固化压敏粘合剂。 第一保护片对于波长为360nm的紫外线具有1％以下的透射率。

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：US20190233681A1

公开(公告)日：2019-08-01

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: C09J7/38 ,  C09J7/25 ,  C09J175/08 ,  C09J133/14 ,  C08F220/10 ,  G06F3/041

CPC classification number: C09J7/38 ,  C08F220/10 ,  C09J7/255 ,  C09J133/14 ,  C09J175/08 ,  G06F3/041

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.