公开(公告)号：US20220106501A1

公开(公告)日：2022-04-07

申请号：US17492843

申请日：2021-10-04

Applicant: NITTO DENKO CORPORATION

Inventor： Shinya Yamamoto ,  Sho Takarada ,  Takahiro Nonaka

IPC: C09J7/38 ,  C08F220/18 ,  C08F220/20

Abstract: Pressure sensitive adhesive sheet has a shear storage elastic modulus of 3×104 Pa or more at 80° C. In the pressure sensitive adhesive sheet, an absolute value of a difference ΔG′ between a shear storage elastic modulus at 25° C. after a weather resistance test and a shear storage elastic modulus at 25° C. before the weather resistance test is 5×104 Pa or less, wherein the weather resistance test is conducted by applying light from a xenon lamp with an irradiation intensity of 0.63 W/cm2 at a wavelength of 340 nm for 500 hours. An increment in the amount of transmitted light b* before and after the weather resistance test is preferably 0.5 or less.

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：US20200307155A1

公开(公告)日：2020-10-01

申请号：US16308873

申请日：2016-06-14

Applicant: NITTO DENKO CORPORATION

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

IPC: B32B7/12 ,  B32B27/36 ,  B32B27/16 ,  B32B17/06 ,  C09J7/38 ,  C09J7/10 ,  G02B5/30

Abstract: A double-sided pressure-.sensitive-adhesive-layer-attached polarizing film is disclosed having a polarizing film nearest to a viewer-side of an nnage display device, a pressure-sensitive adhesive layer A located on the viewer-side of the polarizing film, 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 pm or less thickness and having a transparent protective film on only a single side of the polarizer. The pressure-sensitive adesive layer B is located on the transparent protective film side of the single-side protected polarizing film. The pressure-sensitive adhesive layer A has a thickiess 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：US10310333B2

公开(公告)日：2019-06-04

申请号：US15579645

申请日：2016-06-14

Applicant: NITTO DENKO CORPORATION

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

IPC: G06F3/041 ,  G02F1/1337 ,  B32B27/00 ,  B32B27/30 ,  C09J133/06 ,  G02F1/1333 ,  G02F1/1335 ,  G02B5/30 ,  H01L51/52 ,  C09J133/08 ,  C09J7/38 ,  C09J7/22 ,  G02B1/16

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：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.