公开(公告)号：US20210032503A1

公开(公告)日：2021-02-04

申请号：US16921326

申请日：2020-07-06

Applicant: NITTO DENKO CORPORATION

Inventor： Takuya FUJITA ,  Naohiro KATO ,  Masahito NIWA ,  Yasushi BUZOJIMA

IPC: C09J7/38 ,  C09J11/08 ,  C09J133/10

Abstract: Provided is a double-sided pressure-sensitive adhesive tape that can express excellent impact resistance. The double-sided pressure-sensitive adhesive tape is a double-sided pressure-sensitive adhesive tape for use in fixing a member to be included in a mobile device, the double-sided pressure-sensitive adhesive tape including a pressure-sensitive adhesive layer, wherein the pressure-sensitive adhesive layer is formed from a pressure-sensitive adhesive composition, and wherein the pressure-sensitive adhesive composition contains an organic hollow filler.

公开(公告)号：US20200208026A1

公开(公告)日：2020-07-02

申请号：US16722176

申请日：2019-12-20

Applicant: NITTO DENKO CORPORATION

Inventor： Masahito NIWA ,  Shigeki WATANABE ,  Masataka NISHIWAKI ,  Kazuki MINOURA

IPC: C09J133/14 ,  C09J7/38 ,  C08J3/24

Abstract: Provided is a PSA composition with greatly reduced dependence on fossil-resource-based materials while comprising an acrylic PSA. The PSA composition provided includes a PSA. The PSA is an acrylic PSA including an acrylic polymer. The acrylic polymer is formed from monomers including more than 50% (by weight) acrylic monomer. At least 50% of all carbons in the PSA are biomass-based carbons.

公开(公告)号：US20190233683A1

公开(公告)日：2019-08-01

申请号：US16260459

申请日：2019-01-29

Applicant: NITTO DENKO CORPORATION

Inventor： Itsuhiro HATANAKA ,  Masahito NIWA ,  Taiki SHIMOKURI ,  Shou TAKARADA ,  Takahiro NONAKA ,  Keisuke HIRANO ,  Fumika KAWATAKE ,  Mika IKEMURA

IPC: C09J7/38 ,  C09J7/40 ,  C09J133/06 ,  C09J133/10

CPC classification number: C09J7/385 ,  C08L75/06 ,  C08L75/08 ,  C09J7/401 ,  C09J133/066 ,  C09J133/10 ,  C09J2205/114

Abstract: The pressure sensitive adhesive sheet is a sheet shaped pressure sensitive adhesive including an acryl-based base polymer. The acryl-based base polymer contains an acryl-based segment and a urethane-based segment, and a content of the urethane-based segment is 3 to 30 parts by weight based on 100 parts by weight of the acryl-based segment. The urethane-based segment includes at least one urethane chain selected from the group consisting of a polyether urethane and a polyester urethane. The content of the urethane-based segment other than the polyether urethane-based segment is 15 parts by weight or less based on 100 parts by weight of the acryl-based segment.

公开(公告)号：US20170218232A1

公开(公告)日：2017-08-03

申请号：US15417349

申请日：2017-01-27

Applicant: NITTO DENKO CORPORATION

Inventor： Masahito NIWA ,  Masataka NISHIWAKI ,  Noboru YOSHIDA ,  Naoaki HIGUCHI ,  Yutaka TOSAKI ,  Huairui ZHU ,  Junyi DING

IPC: C09J7/02 ,  B32B7/12 ,  B32B27/06 ,  B32B27/08 ,  B32B27/36 ,  B32B27/32 ,  C09J7/00 ,  B32B7/06

CPC classification number: B32B7/06 ,  B32B3/266 ,  B32B5/022 ,  B32B5/024 ,  B32B5/18 ,  B32B7/12 ,  B32B15/085 ,  B32B15/20 ,  B32B27/065 ,  B32B27/08 ,  B32B27/10 ,  B32B27/12 ,  B32B27/304 ,  B32B27/32 ,  B32B27/322 ,  B32B27/36 ,  B32B29/002 ,  B32B2250/02 ,  B32B2255/102 ,  B32B2255/26 ,  B32B2262/0276 ,  B32B2262/04 ,  B32B2262/062 ,  B32B2262/065 ,  B32B2262/14 ,  B32B2266/0207 ,  B32B2266/0228 ,  B32B2266/0235 ,  B32B2266/025 ,  B32B2266/0257 ,  B32B2266/0264 ,  B32B2266/0278 ,  B32B2307/50 ,  B32B2307/558 ,  B32B2307/56 ,  B32B2307/7265 ,  B32B2405/00 ,  B32B2457/00 ,  C09J7/00 ,  C09J7/10 ,  C09J7/22 ,  C09J7/38 ,  C09J133/066 ,  C09J2201/606 ,  C09J2203/326 ,  C09J2400/243 ,  C09J2423/046 ,  C09J2433/00

Abstract: Provided is a double-faced PSA sheet having excellent detergent resistance. The PSA sheet according to this invention comprises a PSA layer and is adhesive on both faces. The PSA sheet shows a push-peel strength of 30 N/cm2 or greater after a detergent immersion test involving immersion in a standard detergent at 40° C. for 24 hours. It also has an adhesive strength retention rate of 50% or higher, determined as the ratio of push-peel strength P2 after the detergent immersion test to push-peel strength P1 before the detergent immersion test.

公开(公告)号：US20130274419A1

公开(公告)日：2013-10-17

申请号：US13911194

申请日：2013-06-06

Applicant: NITTO DENKO CORPORATION

Inventor： Masayuki OKAMOTO ,  Masahito NIWA ,  Jun AKIYAMA ,  Kiyoe SHIGETOMI

IPC: C09J133/08

CPC classification number: C09J133/08 ,  C08F120/18 ,  C08F220/14 ,  C08F220/18 ,  C08F222/1006 ,  C08F2220/1858 ,  C09J133/06 ,  C08F226/08 ,  C08F220/06

Abstract: An acrylic pressure-sensitive adhesive composition contains: an acrylic polymer (A); and a (meth)acrylic polymer (B) that includes, as a monomer unit, a (meth)acrylic monomer having a tricyclic or higher alicyclic structure and that has a weight average molecular weight of 1000 or more and less than 30000.

Abstract translation: 丙烯酸类压敏粘合剂组合物包含：丙烯酸类聚合物（A）; 和作为单体单元的（甲基）丙烯酸系聚合物（B），其具有三环或更高脂环结构的重均分子量为1000以上且小于30000的（甲基）丙烯酸单体。

公开(公告)号：US20190264067A1

公开(公告)日：2019-08-29

申请号：US16247947

申请日：2019-01-15

Applicant: NITTO DENKO CORPORATION

Inventor： Masahito NIWA ,  Hiroki KIGAMI

IPC: C09J7/38 ,  B32B27/30

Abstract: Provided is a novel double-sided pressure-sensitive adhesive tape that has excellent impact resistance and preferably further has excellent oil resistance. The double-sided pressure-sensitive adhesive tape has a local maximum value of a loss tangent tan δ of 1.5 or more, and a temperature at which the local maximum value is obtained, of from −30° C. to 0° C.

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.

公开(公告)号：US20140256877A1

公开(公告)日：2014-09-11

申请号：US14200834

申请日：2014-03-07

Applicant: NITTO DENKO CORPORATION

Inventor： Kaori MIKI ,  Masahito NIWA ,  Masato FUJITA ,  Takahiro NONAKA

IPC: C09J7/02

CPC classification number: C09J7/385 ,  C09J133/066 ,  C09J139/06 ,  C09J2201/622

Abstract: A pressure-sensitive adhesive sheet containing a pressure-sensitive adhesive layer. The pressure-sensitive adhesive layer has a melting point of −60° C. to 0° C. The melting point can be measured by using the pressure-sensitive adhesive layer as a measurement sample according to differential scanning calorimetry (DSC) in conformity with JIS K 7121.

Abstract translation: 含有压敏粘合剂层的压敏粘合片。 压敏粘合剂层的熔点为-60℃至0℃。熔点可以通过使用压敏粘合剂层作为测量样品，根据差示扫描量热法（DSC）符合 JIS K 7121。

公开(公告)号：US20130240116A1

公开(公告)日：2013-09-19

申请号：US13793577

申请日：2013-03-11

Applicant: NITTO DENKO CORPORATION

Inventor： Takahiro NONAKA ,  Masato FUJITA ,  Masahito NIWA ,  Kaori MIKI

IPC: B29D11/00

CPC classification number: C09J5/00 ,  B29D11/0073 ,  B32B2457/20 ,  B32B2457/202 ,  C09J2203/318 ,  C09J2205/302 ,  G02F2001/133331 ,  G02F2202/28 ,  G02F2203/68 ,  Y10S156/924 ,  Y10S156/937 ,  Y10T156/1189 ,  Y10T156/1972

Abstract: The present invention provides a method of producing a flat panel display having, on a display surface side, an optical laminate wherein two optical elements are adhered to each other via an adhesive sheet or a curable resin layer, which includes the following step 1-step 4, or step 1-step 5, and permits reuse of at least one of the optical elements after step 4 or step 5 as an optical element in step 1: step 1: a step of adhering two optical elements to each other via an adhesive sheet or a curable resin layer, and applying an autoclave treatment to give an optical laminate step 2: a step of checking the appearance of the optical laminate obtained in step 1 step 3: a step of assembling a flat panel display using the optical laminate that passed the check in step 2 step 4: a step of separating the two optical elements in an optical laminate that was rejected by the check in step 2 by relatively rotating them with a vertical line penetrating the opposing faces thereof as a rotation axis step 5: a step of washing the optical element resulting from step 4.

Abstract translation: 本发明提供了一种平板显示器的制造方法，其在显示面侧具有通过粘合片或固化性树脂层将两个光学元件彼此粘合的光学层叠体，其包括以下步骤1步骤 4或步骤1步骤5，并且允许在步骤4或步骤5中的至少一个光学元件作为光学元件在步骤1中重复使用：步骤1：通过粘合剂将两个光学元件彼此粘合的步骤 片材或可固化树脂层，并施加高压釜处理以得到光学层压体步骤2：检查在步骤1中获得的光学层叠材料的外观的步骤步骤3：使用光学层压体组装平板显示器的步骤 通过步骤2中的检查步骤4：通过将穿过其相对面的垂直线作为旋转轴线相对旋转的步骤2，通过步骤2中的检查来拒绝的光学层叠体中的两个光学元件分离 步骤5：洗涤由步骤4得到的光学元件的步骤。

公开(公告)号：US20130165610A1

公开(公告)日：2013-06-27

申请号：US13728129

申请日：2012-12-27

Applicant: NITTO DENKO CORPORATION

Inventor： Masahito NIWA ,  Kaori MIKI

IPC: C09J133/14

CPC classification number: C09J133/14 ,  C09J133/26 ,  C09J139/04 ,  C09J139/06

Abstract: The present invention provides a pressure-sensitive adhesive sheet large in adhesive force when used for a surface of a glass member and capable of reducing the adhesive force to a degree allowing the occurrence of the cracking or breakage of the glass member to be suppressed when the sheet is peeled from the surface of the glass member. The pressure-sensitive adhesive sheet for glass plates of the present invention includes a pressure-sensitive adhesive layer including an acrylic polymer, wherein the content of the acrylic polymer in the pressure-sensitive adhesive layer is 30% by weight or more in relation to the total amount (100% by weight) of the pressure-sensitive adhesive layer; the acrylic polymer substantially includes no acidic functional group; the solvent-insoluble fraction of the pressure-sensitive adhesive layer is 50% or more; and the adhesive force to glass as determined by a specific method is 12.0 N or less.

Abstract translation: 本发明提供一种当用于玻璃构件的表面时具有大的粘合力的粘合片，并且能够将粘合力降低至允许当玻璃构件的裂纹或破裂发生时抑制的程度 片材从玻璃构件的表面剥离。 本发明的玻璃板用粘合片包括含有丙烯酸类聚合物的压敏粘合剂层，其中，压敏粘合剂层中的丙烯酸类聚合物的含量相对于该粘合剂层为30重量％以上 总量（100重量％）的压敏粘合剂层; 丙烯酸类聚合物基本上不含酸性官能团; 粘合剂层的溶剂不溶部分为50％以上; 并且通过具体方法测定的对玻璃的粘合力为12.0N以下。