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公开(公告)号：US11168236B2
公开(公告)日：2021-11-09
申请号：US16152776
申请日：2018-10-05
Applicant: NITTO DENKO CORPORATION
Inventor： Kenta Jozuka , Naoaki Higuchi , Kenji Furuta , Naohiro Kato , Yasushi Buzojima
IPC: C09J133/08 , C09J7/38 , C08F220/18 , C09J133/10 , C09J133/12 , C09J11/08 , C09J133/00
Abstract: The present invention provides an acrylic PSA composition. The acrylic PSA composition comprises an acrylic polymer as its base polymer and at least one species selected among tackifier resins and (meth)acrylic oligomers. The acrylic polymer has a weight average molecular weight higher than 70×104. The acrylic polymer has a dispersity (Mw/Mn) below 15.
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公开(公告)号：US11149171B2
公开(公告)日：2021-10-19
申请号：US14892243
申请日：2014-05-29
Applicant: NITTO DENKO CORPORATION
Inventor： Kenji Furuta , Yoshio Terada
Abstract: A thermally-conductive pressure-sensitive adhesive sheet including a pressure-sensitive adhesive layer containing thermally-conductive particles. One side of the sheet is an adhesive face, and the other side is a non-adhesive face. The thermally-conductive pressure-sensitive adhesive sheet may include a non-adhesive layer on or over only one side of the pressure-sensitive adhesive layer. In this case, the ratio of the thickness of the non-adhesive layer to the thickness of the pressure-sensitive adhesive layer is preferably 0.04 to 0.6. The thermally-conductive pressure sensitive adhesive sheet preferably has a thermal resistance of 6 K·cm2/W or less. The thermally-conductive pressure sensitive adhesive sheet preferably has a total thickness of 50 to 500 μm.
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公开(公告)号：US10525668B2
公开(公告)日：2020-01-07
申请号：US15445061
申请日：2017-02-28
Applicant: NITTO DENKO CORPORATION
Inventor： Kenji Furuta , Yoshio Terada , Tadashi Takahashi , Mitsuhiro Kanada
IPC: B32B7/12 , B32B27/36 , B32B37/12 , C09J133/06 , C09J7/38 , C09J7/22 , C09J7/29 , C09J7/28 , B32B15/082 , B32B15/085 , B32B15/088 , B32B15/09 , B32B15/12 , B32B15/18 , B32B15/20 , B32B27/08 , B32B27/10 , B32B27/28 , B32B27/30 , B32B27/32
Abstract: A pressure-sensitive adhesive sheet includes a pressure-sensitive adhesive layer and a substrate layer configured to support the pressure-sensitive adhesive agent layer. The pressure-sensitive adhesive layer has a storage modulus of 250 kPa or less at 23° C. The substrate layer has an elastic modulus of 1680 N/cm to 3000 N/cm both inclusive. The pressure-sensitive adhesive sheet shows a deviation amount less than 1.0 mm. The amount is the deviation amount of the pressure-sensitive adhesive sheet per 250 gf/cm2 of the sheet in a holding ability test at 80° C. after one hour from a time when the test is started.
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公开(公告)号：US09025279B2
公开(公告)日：2015-05-05
申请号：US14185369
申请日：2014-02-20
Applicant: Nitto Denko Corporation
Inventor： Kenji Furuta , Rie Nakahira , Yoshihisa Furuta , Koichi Ikeda
CPC classification number: G11B33/1446 , B32B7/12 , B32B15/00 , B32B27/08 , B32B27/308 , B32B2255/10 , B32B2255/205 , B32B2307/734 , B32B2457/00 , B32B2581/00 , G11B33/1466 , Y10T428/24975
Abstract: A pressure-sensitive adhesive sheet according to the present invention includes a base including a metal layer, a first plastic film layer A, and a second plastic film layer B and a pressure-sensitive adhesive layer on a surface of the second plastic film B. The metal layer is positioned between the first plastic film layer A and the second plastic film layer B. The metal layer has a thickness of 2 μm to 15 μm. A total of a thickness Ta of the first plastic film layer A and a thickness Tb of the second plastic film layer B is within a range of 25 μm to 70 μm.
Abstract translation: 根据本发明的压敏粘合片包括在第二塑料膜B的表面上包括金属层，第一塑料膜层A和第二塑料膜层B的基底和压敏粘合剂层。 金属层位于第一塑料膜层A和第二塑料膜层B之间。金属层的厚度为2μm〜15μm。 第一塑料膜层A的厚度Ta和第二塑料膜层B的厚度Tb的总和在25μm至70μm的范围内。
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公开(公告)号：US10815396B2
公开(公告)日：2020-10-27
申请号：US16174624
申请日：2018-10-30
Applicant: NITTO DENKO CORPORATION
Inventor： Tatsuya Suzuki , Hiroki Ieda , Akira Hirao , Kenji Furuta
IPC: C09J7/38 , C08K3/22 , C09J11/04 , C09J133/06 , C09J133/26 , C09J9/00 , C09J7/10 , C08K3/01
Abstract: Provided is a thermally conductive PSA sheet that comprises a PSA layer comprising a thermally conductive filler. The PSA sheet has a thermal resistance less than 6.0 cm2·K/W, and also has an adhesive strength N1 at 30 minutes of standing at 23° C. after applied to a stainless steel plate and an adhesive strength N2 at 23° C. after subjected to 5 minutes of heating at 80° C. after applied to a stainless steel plate, satisfying N2/N1≥2.
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Patent Agency Ranking
公开(公告)号：US09683138B2
公开(公告)日：2017-06-20
申请号：US15186032
申请日：2016-06-17
Applicant: NITTO DENKO CORPORATION
Inventor： Kenji Furuta , Yoshio Terada , Kota Nakao , Akira Hirao , Ryo Morioka
IPC: C09J7/02 , C09J201/00 , B32B15/08 , G11B33/14 , C09J133/06 , C09J133/08
CPC classification number: C09J7/0296 , B32B15/08 , C09J7/22 , C09J7/29 , C09J7/38 , C09J133/06 , C09J133/08 , C09J2201/606 , C09J2201/622 , C09J2203/326 , C09J2400/163 , C09J2423/106 , C09J2433/00 , C09J2467/006 , G11B25/043 , G11B33/1446
Abstract: A pressure-sensitive adhesive sheet includes a pressure-sensitive adhesive layer and a base including a metal layer and a resin layer, and a product of an initial elastic modulus of the base and a total thickness of the base is 3000 N/mm or less, and a separation distance is 2 mm or less, the separation distance is measured with a peel test with a constant load as follows: a test piece of the pressure-sensitive adhesive sheet having a 10 mm width and a 100 mm length is attached to a surface of a stainless steel test plate and then, the test plate is left standing at a temperature of 23° C. for twenty four hours and then, a load of 100 gf is applied to one end of a length dimension of the test piece vertical to the surface of the test plate and a separation distance of the test piece is measured after one hour.
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公开(公告)号：US10647891B2
公开(公告)日：2020-05-12
申请号：US16355921
申请日：2019-03-18
Applicant: NITTO DENKO CORPORATION
Inventor： Kenji Furuta , Akira Hirao , Tatsuya Suzuki
Abstract: Provided is a PSA sheet that has a high level of moisture resistance while maintaining good holding power with reduced gas emission. The PSA sheet provided by this invention comprises a moisture-impermeable layer and a PSA layer provided to one face of the moisture-impermeable layer. The PSA layer comprises a polymer A having a weight average molecular weight of 5×104 or higher as a base polymer and a polymer B having a number average molecular weight of 1000 or higher and a weight average molecular weight lower than 5×104.
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公开(公告)号：US11434341B2
公开(公告)日：2022-09-06
申请号：US16638340
申请日：2018-08-07
Applicant: NITTO DENKO CORPORATION
Inventor： Yusuke Yamanari , Makoto Saito , Akira Hirao , Kenji Furuta
Abstract: A resin sheet with a pressure-sensitive adhesive layer including the resin sheet. The resin sheet including a main surface A and a main surface B opposite to each other across a thickness “d”, where the resin sheet has a 50% compression load of 20 N/cm2 or less at 23±5° C. in a direction of the thickness “d”, which is measured in conformity with a method of measuring a compression hardness described in JIS K 6767:1999; where the resin sheet has a Poisson's ratio at 23° C. of 0.10 or less; and the resin sheet has a thickness recovery ratio of 40% or more when compressed by 20% in the direction of the thickness “d” at 23° C.
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公开(公告)号：US20190206427A1
公开(公告)日：2019-07-04
申请号：US16223800
申请日：2018-12-18
Applicant: Nitto Denko Corporation
Inventor： Kenji Furuta , Akira Hirao , Tatsuya Suzuki , Hiroki Ieda , Akira Chinen , Minami Watanabe
CPC classification number: G11B5/012 , C09J7/387 , C09J2203/326 , C09J2205/114 , C09J2425/00 , C09J2453/00 , G11B5/127 , G11B19/2009
Abstract: Provided is a PSA sheet that achieves both bonding reliability at a high temperature and reduction of outgassing. The PSA sheet provided by this invention comprises a substrate layer and a PSA layer provided to one face of the substrate layer. The PSA sheet exhibits a 180° peel strength of 1 N/20 mm or greater to stainless steel at 60° C. It has an amount of thermally released gas of 10 μg/cm2 or less, determined at 130° C. for 30 minutes by GC-MS.
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公开(公告)号：US10593353B2
公开(公告)日：2020-03-17
申请号：US16223800
申请日：2018-12-18
Applicant: Nitto Denko Corporation
Inventor： Kenji Furuta , Akira Hirao , Tatsuya Suzuki , Hiroki Ieda , Akira Chinen , Minami Watanabe
Abstract: Provided is a PSA sheet that achieves both bonding reliability at a high temperature and reduction of outgassing. The PSA sheet provided by this invention comprises a substrate layer and a PSA layer provided to one face of the substrate layer. The PSA sheet exhibits a 180° peel strength of 1 N/20 mm or greater to stainless steel at 60° C. It has an amount of thermally released gas of 10 μg/cm2 or less, determined at 130° C. for 30 minutes by GC-MS.
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