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：US20130344327A1

公开(公告)日：2013-12-26

申请号：US14013226

申请日：2013-08-29

Applicant: Nitto Denko Corporation

Inventor： Mariko YOSHIDA ,  Jiro YAMATO ,  Ryohei SAWAZAKI ,  Keiji HAYASHI

IPC: B32B7/06

CPC classification number: B32B7/06 ,  C09J7/385 ,  C09J2201/622 ,  H01L31/02168 ,  H01L31/0481 ,  Y02E10/50 ,  Y10T156/10 ,  Y10T428/28 ,  Y10T428/2848 ,  Y10T428/2852 ,  Y10T428/2891 ,  Y10T428/31511

Abstract: Provided is a surface protective sheet which satisfactorily adheres even to a coated surface having a rough surface, and not only does not cause an adhesive residue that can be observed with eyes but also does not impair the self-cleaning property of the surface of a coated plate. The surface protective sheet includes: a base material layer; and a pressure-sensitive adhesive layer, in which: a main component in a pressure-sensitive adhesive for constructing the pressure-sensitive adhesive layer includes a polymer P obtained by cross-linking a polymer A; in pulse NMR measurement of the polymer P at 30° C., the maximum spin-spin relaxation time T2MAX in all spin-spin relaxation times T2 of protons to be measured falls within the range of 300 to 800 μs; and the content of a polymer component corresponding to the maximum spin-spin relaxation time T2MAX in the polymer P is 60% or more.

Abstract translation: 提供了一种令人满意地粘附到具有粗糙表面的涂布表面的表面保护片，不仅不会引起可以用眼睛观察到的粘合剂残留物，而且也不会损害涂布的表面的自清洁性 盘子。 表面保护片包括：基材层; 以及压敏粘合剂层，其中：用于构成压敏粘合剂层的压敏粘合剂中的主要成分包括通过交联聚合物A获得的聚合物P; 在30℃下聚合物P的脉冲NMR测量中，待测量的质子的所有自旋 - 自旋松弛时间T2中的最大自旋 - 自旋弛豫时间T2MAX落在300至800微米的范围内; 并且聚合物P中对应于最大自旋 - 自旋弛豫时间T2MAX的聚合物成分的含量为60％以上。

公开(公告)号：US20230099594A1

公开(公告)日：2023-03-30

申请号：US17951378

申请日：2022-09-23

Applicant: NITTO DENKO CORPORATION

Inventor： Masamichi MATSUMOTO ,  Hirofumi KATAMI ,  Sho TAKARADA ,  Ryohei SAWAZAKI ,  Kazuma MITSUI

IPC: C09J133/08 ,  C09J7/28 ,  C09J7/38 ,  B32B7/12

Abstract: An object of the present invention is to provide a pressure-sensitive adhesive composition that enables a pressure-sensitive adhesive layer to be formed, the pressure-sensitive adhesive layer allowing the appearance of a display device and an input device to be unlikely to deteriorate even under low pressure conditions, a pressure-sensitive adhesive layer, a pressure-sensitive adhesive sheet, an optical member, and a touch panel. The pressure-sensitive adhesive composition of the present invention contains an acrylic polymer (A) and a hydrogenated polyolefinic resin (B). The acrylic polymer (A) contains a (meth)acrylic alkyl ester having an alkyl group having 8 or more carbon atoms as a constituent monomer component. The hydrogenated polyolefinic resin (B) contains a hydrogenated polyolefin.

公开(公告)号：US20130344328A1

公开(公告)日：2013-12-26

申请号：US14013177

申请日：2013-08-29

Applicant: NITTO DENKO CORPORATION

Inventor： Ryohei SAWAZAKI ,  Keiji HAYASHI ,  Jiro YAMATO ,  Mariko YOSHIDA ,  Mitsushi YAMAMOTO ,  Kenta YAMASHITA

IPC: C09J7/02

CPC classification number: C09J7/385 ,  C09J2201/622 ,  C09J2203/322 ,  H01L31/02168 ,  H01L31/0481 ,  Y02E10/50 ,  Y10T428/28 ,  Y10T428/2891

Abstract: Provided is a surface protective sheet, which satisfactorily adheres to an adherend and which can be easily re-released and suppresses contamination due to a pressure-sensitive adhesive remaining on the surface of the adherend after the release of the sheet. The surface protective sheet includes: a base material layer; and a pressure-sensitive adhesive layer, in which a difference ΔT (%) between the visible light transmittance T1 (%) of a transparent substrate having an antireflection film and the visible light transmittance T2 (%) of the transparent substrate resulting when the surface protective sheet is attached to one side of the transparent substrate and left to stand at 160° C. for 1 hour, and then the surface protective sheet is released under a temperature environment of 23° C. (ΔT=T1−T2) satisfies a relationship of ΔT≦1.8.

Abstract translation: 提供了令人满意地粘附在被粘物上的表面保护片，其能够容易地再释放，并且抑制了在剥离片材之后残留在被粘物表面上的压敏粘合剂引起的污染。 表面保护片包括：基材层; 以及粘合剂层，其中具有防反射膜的透明基板的可见光透射率T1（％）与透明基板的可见光透射率T2（％）之间的差ΔT（％）与表面 将保护片附着在透明基板的一侧，并在160℃静置1小时，然后在23℃的温度环境下释放表面保护片（DeltaT = T1-T2）满足 DeltaT@1.8的关系。

公开(公告)号：US20130344288A1

公开(公告)日：2013-12-26

申请号：US14013217

申请日：2013-08-29

Applicant: Nitto Denko Corporation

Inventor： Keiji HAYASHI ,  Jiro YAMATO ,  Ryohei SAWAZAKI ,  Mariko YOSHIDA

IPC: C09J7/02 ,  H01L31/048

CPC classification number: C09J7/385 ,  C09J2201/622 ,  C09J2203/322 ,  H01L31/02168 ,  H01L31/0481 ,  Y02E10/50 ,  Y10T428/24355 ,  Y10T428/2852 ,  Y10T428/2891

Abstract: Provided is a surface protective sheet which satisfactorily adheres even to a coated surface having a rough surface, and not only does not cause an adhesive residue that can be observed with eyes but also does not impair the self-cleaning property of the surface of a coated plate. The surface protective sheet includes: a base material layer; and a pressure-sensitive adhesive layer, in which: the pressure-sensitive adhesive layer has an adhesion for a coated steel plate having a ten-point average surface roughness Rz of 8.0 μm of 0.05 N/20 mm or more; a main component in a pressure-sensitive adhesive for constructing the pressure-sensitive adhesive layer includes a polymer P obtained by cross-linking a polymer A; the polymer A has a weight-average molecular weight Mw of 500,000 or more; the polymer A has a distribution degree Mw/Mn of 8.0 or less; and an insoluble content of the polymer P in ethyl acetate is 90 wt % or more.

Abstract translation: 提供了一种令人满意地粘附到具有粗糙表面的涂布表面的表面保护片，不仅不会引起可以用眼睛观察到的粘合剂残留物，而且也不会损害涂布的表面的自清洁性 盘子。 表面保护片包括：基材层; 和粘合剂层，其中：所述粘合剂层具有平均表面粗糙度Rz为8.0μm的0.05N / 20mm以上的涂布钢板的粘合性; 用于构成压敏粘合剂层的压敏粘合剂中的主要成分包括通过交联聚合物A获得的聚合物P; 聚合物A的重均分子量Mw为50万以上; 聚合物A的分布度Mw / Mn为8.0以下; 聚合物P在乙酸乙酯中的不溶成分为90重量％以上。

公开(公告)号：US20170276851A1

公开(公告)日：2017-09-28

申请号：US15512328

申请日：2015-09-18

Applicant: NITTO DENKO CORPORATION

Inventor： Akinori IZAKI ,  Ryohei SAWAZAKI ,  Atsushi YASUI ,  Yuki KIDA ,  Takeharu KITAGAWA ,  Takuya MORI

IPC: G02B5/30

CPC classification number: G02B5/3041 ,  C08G2170/40

Abstract: Provided is a polarizing plate including an optical functional film and a polarizing film (polarizer), the polarizing plate being thin and excellent in durability of the polarizing film. The polarizing plate of the present invention includes an optical functional film, a pressure-sensitive adhesive layer, a polarizing film, and a protective film in the stated order, in which: the polarizing film has a thickness of 15 μm or less; the pressure-sensitive adhesive layer has a thickness of 15 μm or less; the optical functional film has a moisture permeability of 200 g/m2/24 h or less; and the protective film has a moisture permeability of 1,000 g/m2/24 h or less.

公开(公告)号：US20140243472A1

公开(公告)日：2014-08-28

申请号：US14177623

申请日：2014-02-11

Applicant: NITTO DENKO CORPORATION

Inventor： Souya JO ,  Koji SHITARA ,  Noritsugu DAIGAKU ,  Tadatoshi NAKANISHI ,  Shou UCHIDA ,  Shogo SASAKI ,  Ryohei SAWAZAKI

IPC: C09J175/04 ,  C09J133/00

CPC classification number: C09J175/04 ,  C08G18/6696 ,  C08G18/8029 ,  C08G2170/40 ,  C09J133/00 ,  C09J133/14

Abstract: Provided is a surface protective film including, as an outermost layer, a pressure-sensitive adhesive layer containing a urethane-based pressure-sensitive adhesive as a main component, the surface protective film allowing the contamination of an adherend to be extremely suppressed, and being preferably excellent in wettability and reworkability. The surface protective film of the present invention includes, as an outermost layer, a pressure-sensitive adhesive layer containing, as a main component, a urethane-based pressure-sensitive adhesive containing a polyurethane-based resin; and when a pressure-sensitive adhesive layer side of the surface protective film is attached to a glass plate at 50° C. for 10 days and then the surface protective film is peeled from the glass plate, a residual adhesive strength on the peeled surface side of the glass plate is 3.0 N/19 mm or more.

Abstract translation: 提供一种表面保护膜，其包含作为最外层的含有氨基甲酸酯系压敏粘合剂作为主要成分的压敏粘合剂层，能够极大地抑制被粘物的污染的表面保护膜，并且 优选润湿性和再加工性。 本发明的表面保护膜包括作为最外层的含有聚氨酯类树脂的聚氨酯系压敏粘合剂作为主要成分的压敏粘合剂层， 并且当将表面保护膜的压敏粘合剂层侧在50℃下安装在玻璃板上10天，然后将表面保护膜从玻璃板上剥离时，剥离表面侧的残留粘合强度 的玻璃板为3.0N / 19mm以上。

公开(公告)号：US20140065415A1

公开(公告)日：2014-03-06

申请号：US13975652

申请日：2013-08-26

Applicant: NITTO DENKO CORPORATION

Inventor： Shogo SASAKI ,  Toru ISEKI ,  Souya JO ,  Shou UCHIDA ,  Ryohei SAWAZAKI ,  Masahiko ANDO

IPC: C09J175/04 ,  B32B7/12 ,  C09J7/02

CPC classification number: B32B7/12 ,  C08G18/222 ,  C08G18/4816 ,  C08G18/482 ,  C08G18/4829 ,  C08G18/5021 ,  C08G18/792 ,  C08G18/794 ,  C08G2170/40 ,  C09J7/38 ,  C09J175/04 ,  Y10T428/2848 ,  Y10T428/2896

Abstract: A urethane-based pressure-sensitive adhesive including a polyurethane-based resin, in which: the polyurethane-based resin includes a polyurethane-based resin obtained by curing a composition containing a polyol (A) and a polyfunctional isocyanate compound (B); and the polyol (A) contains a polyol (A1) having 3 OH groups and a number-average molecular weight Mn of 8,000 to 20,000. The urethane-based pressure-sensitive adhesive is excellent in reworkability, initial wettability, and transparency, and is preferably excellent in adhesive residue-preventing property, that preferably has a large wetting rate, and that is preferably prevented from showing external appearance unevenness due to orange peel. Also provided is a surface protective film using such urethane-based pressure-sensitive adhesive in its pressure-sensitive adhesive layer. Further provided is an optical member or electronic member to which such surface protective film is attached.

Abstract translation: 包含聚氨酯类树脂的聚氨酯类压敏粘合剂，其中：所述聚氨酯类树脂包括通过固化含有多元醇（A）和多官能异氰酸酯化合物（B）的组合物而获得的聚氨酯类树脂; 多元醇（A）含有3个OH基，数均分子量Mn为8,000〜20,000的多元醇（A1）。 氨基甲酸酯类压敏粘合剂的再加工性，初始润湿性和透明性优异，优选具有优选具有较大润湿速度的粘合剂残留防止性优异，并且优选防止由于 橙皮 还提供了在其压敏粘合剂层中使用这种聚氨酯类压敏粘合剂的表面保护膜。 还提供了附着有这种表面保护膜的光学构件或电子构件。

公开(公告)号：US20140004343A1

公开(公告)日：2014-01-02

申请号：US14013222

申请日：2013-08-29

Applicant: Nitto Denko Corporation

Inventor： Jiro YAMATO ,  Keiji HAYASHI ,  Ryohei SAWAZAKI ,  Mariko YOSHIDA

IPC: C09J7/02 ,  H01L31/048

CPC classification number: C09J7/385 ,  C09J2201/622 ,  C09J2203/322 ,  H01L31/02168 ,  H01L31/0481 ,  Y02E10/50 ,  Y10T428/28 ,  Y10T428/2891

Abstract: Provided is a surface protective sheet, which satisfactorily adheres to an adherend and which shows little increase in adhesion with time, can easily be re-released, reduces the amount of a pressure-sensitive adhesive remaining on the surface of the adherend after the release of the sheet, and does not impair the self-cleaning property of the surface of a coated plate as the adherend. The surface protective sheet includes: a base material layer; and a pressure-sensitive adhesive layer, in which, when the surface protective sheet is attached to a silicon wafer on the pressure-sensitive adhesive layer side of the sheet and left to stand at 40° C. for 24 hours, and then the surface protective sheet is released under a temperature environment of 23° C., the surface of the resultant silicon wafer has a C/Si ratio of 0.8 or less in photoelectron spectroscopy analysis.

Abstract translation: 提供了令人满意地粘附在被粘物上并且几乎没有随时间粘附增加的表面保护片，容易被再释放，减少了剥离后被粘物表面上残留的压敏粘合剂的量 并且不会损害作为被粘物的涂布板的表面的自清洁性。 表面保护片包括：基材层; 以及压敏粘合剂层，其中当将表面保护片粘附到片材的压敏粘合剂层侧的硅晶片上并在40℃下放置24小时后，再将表面 保护片在23℃的温度环境下释放，所得硅片的表面在光电子能谱分析中的C / Si比为0.8以下。