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。

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：US20200291269A1

公开(公告)日：2020-09-17

申请号：US16650931

申请日：2018-09-18

Applicant: NITTO DENKO CORPORATION

Inventor： Takeshi NAKANO ,  Keiji HAYASHI ,  Souya JO ,  Shogo SASAKI ,  Kenichi KATAOKA

IPC: C09J7/38 ,  C09J133/08 ,  B32B27/36 ,  B32B7/12

Abstract: A reinforcing film comprises a pressure sensitive adhesive layer laminated and fixed on a principal surface of a film substrate. The pressure sensitive adhesive layer is formed of a photocurable composition containing a photocurable agent and a base polymer having a crosslinked structure. A frictional force of the pressure sensitive adhesive layer measured with a frictional force microscope at a frequency of 5 Hz is preferably 2 to 5 times a frictional force at a frequency of 0.1 Hz. After photocuring of the pressure sensitive adhesive layer, a frictional force of a photocured pressure sensitive adhesive layer measured with the frictional force microscope at a frequency of 5 Hz is preferably not less than 5 times a frictional force measured at a frequency of 0.1 Hz.

公开(公告)号：US20200231846A1

公开(公告)日：2020-07-23

申请号：US16650764

申请日：2018-09-18

Applicant: NITTO DENKO CORPORATION

Inventor： Takeshi NAKANO ,  Keiji HAYASHI ,  Souya JO ,  Shogo SASAKI ,  Kenichi KATAOKA

IPC: C09J7/38 ,  C09J133/08

Abstract: A reinforcing film comprises a pressure sensitive adhesive layer laminated and fixed on a principal surface of a film substrate. The pressure sensitive adhesive layer is formed of a photocurable composition containing a photocurable agent and a base polymer having a crosslinked structure. The gel fraction of the photocurable composition is preferably 60% or more. The shear storage elastic modulus at 25° C. of the pressure sensitive adhesive layer is preferably 1×104 to 1.2×105 Pa. The shear storage elastic modulus at 25° C. of the pressure sensitive adhesive layer after photocuring is preferably 1.5×105 to 2×106 Pa.

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。