公开(公告)号：US20140037948A1

公开(公告)日：2014-02-06

申请号：US13954623

申请日：2013-07-30

Applicant: NITTO DENKO CORPORATION

Inventor： Souya JO ,  Shogo SASAKI ,  Toru ISEKI ,  Masahiko ANDO

IPC: C09J7/02

CPC classification number: C09J7/38 ,  C08G18/222 ,  C08G18/4812 ,  C08G18/4816 ,  C08G18/4825 ,  C08G18/4829 ,  C08G18/792 ,  C08G18/8029 ,  C09J175/08 ,  C09J2201/122 ,  C09J2201/622 ,  C09J2203/318 ,  C09J2203/326 ,  C09J2475/00 ,  Y10T428/2848 ,  Y10T428/2896

Abstract: A surface protective film, including: a backing layer; and a pressure-sensitive adhesive layer, in which: the pressure-sensitive adhesive layer includes a polyurethane-based resin; and the surface protective film has a pressure-sensitive adhesive strength for an acrylic plate of 0.5 N/25 mm or less after being attached to the acrylic plate and stored at 70° C. for 1 day. Another surface protective film including: a backing layer; and a pressure-sensitive adhesive layer, in which: the pressure-sensitive adhesive layer includes a polyurethane-based resin; the polyurethane-based resin includes a polyurethane-based resin obtained by curing a composition including a polyol (A) having at least two OH groups and a polyfunctional isocyanate compound (B); and the polyfunctional isocyanate compound (B) includes a polyfunctional aromatic isocyanate compound.

Abstract translation: 表面保护膜，包括：背衬层; 和粘合剂层，其中：所述压敏粘合剂层包含聚氨酯类树脂; 并且表面保护膜在连接到丙烯酸板之后具有0.5N / 25mm或更小的丙烯酸板的压敏粘合强度，并在70℃下储存1天。 另一表面保护膜包括：背衬层; 和粘合剂层，其中：所述压敏粘合剂层包含聚氨酯类树脂; 聚氨酯类树脂包括通过固化包含具有至少两个OH基的多元醇（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; 并且多官能异氰酸酯化合物（B）包括多官能芳族异氰酸酯化合物。

公开(公告)号：US20190077999A1

公开(公告)日：2019-03-14

申请号：US15771636

申请日：2017-11-20

Applicant: NITTO DENKO CORPORATION

Inventor： Hiroki IEDA ,  Tatsuya SUZUKI ,  Kenji FURUTA ,  Minami WATANABE ,  Takeshi NAKANO ,  Shogo SASAKI

IPC: C09J7/38 ,  C09J183/04 ,  C09J201/02

Abstract: The present invention provides a pressure-sensitive adhesive (PSA) sheet that achieves both low initial adhesiveness and strong adhesiveness upon use and has excellent transparency of the PSA layer. The PSA sheet provided herein includes a PSA layer having a haze value of 1.0% or less. The PSA sheet is configured so that a pressure-sensitive adhesive strength N1, after the PSA layer is attached to a stainless steel plate and left at 23° C. for 30 minutes, is 1.5 N/20 mm or less, and a pressure-sensitive adhesive strength N2, after the PSA layer is attached to a stainless steel plate and heated at 80° C. for 5 minutes, is 10.0 N/20 mm or more.

公开(公告)号：US20140037954A1

公开(公告)日：2014-02-06

申请号：US13954679

申请日：2013-07-30

Applicant: NITTO DENKO CORPORATION

Inventor： Toru ISEKI ,  Shogo SASAKI ,  Souya JO ,  Masahiko ANDO

IPC: C09J7/02

CPC classification number: C09J7/38 ,  C08G18/222 ,  C08G18/4816 ,  C08G18/4825 ,  C08G18/4829 ,  C08G18/792 ,  C08G18/794 ,  C08G18/8029 ,  C08K5/0091 ,  C08K5/07 ,  C09J175/08 ,  C09J2475/00 ,  Y10T428/2896

Abstract: A resin composition includes: a polyol (A) having at least two OH groups; a polyfunctional isocyanate compound (B); a catalyst (C); and a compound (D) that undergoes keto-enol tautomerization, in which: a content ratio of the polyfunctional isocyanate compound (B) with respect to 100 parts by weight of the polyol (A) is 1 part by weight to 100 parts by weight; and the catalyst (C) includes an iron-based compound containing iron as an active center thereof. The resin composition can serve as a pressure-sensitive adhesive composition for forming a pressure-sensitive adhesive layer containing a polyurethane-based resin. Also provided are a pressure-sensitive adhesive sheet and a surface protective film each including such pressure-sensitive adhesive layer.

Abstract translation: 树脂组合物包括：具有至少两个OH基团的多元醇（A） 多官能异氰酸酯化合物（B）; 催化剂（C）; 和进行酮 - 烯醇互变异构化的化合物（D），其中：多官能异氰酸酯化合物（B）相对于100重量份多元醇（A）的含量比为1重量份〜100重量份 ; 并且催化剂（C）包括含铁作为其活性中心的铁基化合物。 树脂组合物可以用作形成含有聚氨酯类树脂的压敏粘合剂层的压敏粘合剂组合物。 还提供了各自包括这种压敏粘合剂层的压敏粘合片和表面保护膜。

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：US20130225740A1

公开(公告)日：2013-08-29

申请号：US13772763

申请日：2013-02-21

Applicant: Nitto Denko Corporation

Inventor： Toru ISEKI ,  Shogo SASAKI ,  Souya JO ,  Masahiko ANDO

IPC: C09J133/08

CPC classification number: C09J133/08 ,  C09J133/14

Abstract: The present invention provides a pressure-sensitive adhesive composition comprising: an acrylic polymer (A) having a polyoxyalkylene chain in a side chain and a polyoxyalkylene oligomer (B), wherein a content of the polyoxyalkylene oligomer (B) is 5 to 150 parts by weight with respect to 100 parts by weight of the acrylic polymer (A), a pressure-sensitive adhesive layer comprising the pressure-sensitive adhesive composition, and a pressure-sensitive adhesive sheet comprising a backing and the pressure-sensitive adhesive layer.

Abstract translation: 本发明提供一种压敏粘合剂组合物，其包含：侧链具有聚氧化烯链的丙烯酸聚合物（A）和聚氧化烯低聚物（B），其中聚氧化烯低聚物（B）的含量为5〜150重量份 相对于100重量份丙烯酸类聚合物（A）的重量，包含压敏粘合剂组合物的压敏粘合剂层和包含背衬和压敏粘合剂层的压敏粘合剂片。

公开(公告)号：US20190071589A1

公开(公告)日：2019-03-07

申请号：US15766896

申请日：2017-11-20

Applicant: NITTO DENKO CORPORATION

Inventor： Hiroki IEDA ,  Tatsuya SUZUKI ,  Kenji FURUTA ,  Minami WATANABE ,  Takeshi NAKANO ,  Shogo SASAKI

IPC: C09J7/38 ,  B32B27/30 ,  B32B27/16 ,  C09J7/20 ,  C09J201/02 ,  C09J11/08 ,  C09J133/08

Abstract: The present invention provides a pressure-sensitive adhesive (PSA) sheet that achieves, in the form having a support substrate, both low initial adhesiveness and strong adhesiveness during use. The PSA sheet provided in this application includes a support substrate and a PSA layer laminated on at least one side of the support substrate. The PSA layer has a thickness of 3 μm or more but less than 100 μm. The support substrate has a thickness of 30 μm or more. The PSA sheet is configured so that a relationship between an elastic modulus Et′ [MPa] of the PSA sheet and a thickness Ts [mm] of the support substrate fulfils the following formula: 0.1 [N·mm]

公开(公告)号：US20140037949A1

公开(公告)日：2014-02-06

申请号：US13954640

申请日：2013-07-30

Applicant: NITTO DENKO CORPORATION

Inventor： Souya JO ,  Shogo SASAKI ,  Toru ISEKI ,  Masahiko ANDO

IPC: C09J7/02

CPC classification number: C09J7/38 ,  C08G18/4812 ,  C08G18/4816 ,  C08G18/4825 ,  C08G18/4829 ,  C08G18/8029 ,  C09J175/08 ,  C09J2201/122 ,  C09J2203/318 ,  C09J2203/326 ,  C09J2475/00 ,  Y10T428/2848 ,  Y10T428/2896

Abstract: Provided is a surface protective film that uses a polyurethane-based resin in a pressure-sensitive adhesive layer, the surface protective film being able to achieve both of low contamination property and adhesive residue reduction, and having excellent reworkability, wettability, and transparency as well. Also provided are an optical member and an electronic member each having attached thereto such surface protective film. The surface protective film includes: a backing layer; and a pressure-sensitive adhesive layer, in which: the pressure-sensitive adhesive layer includes a polyurethane-based resin; the polyurethane-based resin includes a polyurethane-based resin obtained by curing a composition including a polyol (A) having at least two OH groups and a polyfunctional isocyanate compound (B); and (1) the polyol (A) includes 50 wt % or more of a polyol having two OH groups and a number-average molecular weight Mn of 3,000 to 6,000, or (2) the polyfunctional isocyanate compound (B) includes a polyfunctional aromatic isocyanate compound.

Abstract translation: 提供了一种在压敏粘合剂层中使用聚氨酯类树脂的表面保护膜，该表面保护膜能够实现低污染性和粘合剂残留降低，并且还具有优异的再加工性，润湿性和透明性 。 还提供了一种光学构件和各自附着有这种表面保护膜的电子构件。 表面保护膜包括：背衬层; 和粘合剂层，其中：所述压敏粘合剂层包含聚氨酯类树脂; 聚氨酯类树脂包括通过固化包含具有至少两个OH基的多元醇（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; 和（1）多元醇（A）包含50重量％以上的具有两个OH基的多元醇和数均分子量Mn为3,000〜6,000的多元醇，或者，（2）多官能异氰酸酯化合物（B） 异氰酸酯化合物。

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：US20140127504A1

公开(公告)日：2014-05-08

申请号：US14065536

申请日：2013-10-29

Applicant: NITTO DENKO CORPORATION

Inventor： Shogo SASAKI ,  Toru ISEKI ,  Shou UCHIDA ,  Masahiko ANDO

IPC: C09J11/06 ,  C09J7/02

CPC classification number: C09J7/381 ,  C08G18/4829 ,  C08G2170/40 ,  C08K5/005 ,  C08K5/13 ,  C09J2205/102 ,  C09J2475/00 ,  Y10T428/2896 ,  Y10T428/31551

Abstract: Provided is a urethane-based pressure-sensitive adhesive that is extremely excellent in adhesive residue-preventing property. Also provided is a surface protective film using such urethane-based pressure-sensitive adhesive in its pressure-sensitive adhesive layer, the surface protective film being extremely excellent in adhesive residue-preventing property. Also provided is an optical member or electronic member to which such surface protective film is attached. The urethane-based pressure-sensitive adhesive is 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 polyurethane-based resin contains a deterioration-preventing agent.

Abstract translation: 提供了一种非常优异的防粘附性的聚氨酯类压敏粘合剂。 还提供了在其压敏粘合剂层中使用这种氨基甲酸酯类压敏粘合剂的表面保护膜，该表面保护膜具有非常优异的防粘附性能。 还提供了附着有这种表面保护膜的光学构件或电子构件。 氨基甲酸酯类压敏粘合剂是包含聚氨酯类树脂的氨基甲酸酯系粘合剂，其中，所述聚氨酯系树脂包含通过使包含多元醇（A）的组合物和 多官能异氰酸酯化合物（B）; 聚氨酯系树脂含有防止劣化剂。