公开(公告)号：US20210277286A1

公开(公告)日：2021-09-09

申请号：US17272958

申请日：2019-08-30

Applicant: NITTO DENKO CORPORATION

Inventor： Kaori MIZOBATA ,  Kaori AKAMATSU ,  Mika TAKASHIMA ,  Masayuki OKAMOTO

IPC: C09J7/30 ,  C09J7/29 ,  C09J11/06 ,  C09J9/00 ,  C09J133/08

Abstract: The present invention relates to an adhesive composition containing at least a polymer and an ionic liquid, in which when an adhesive layer is formed of a composition composed of components other than the ionic liquid among components contained in the adhesive composition, the adhesive layer has a relative permittivity of 5 or more at a frequency of 100 Hz, after being left to stand in an environment of 22° C. and 20% RH for 3 days.

公开(公告)号：US20210214587A1

公开(公告)日：2021-07-15

申请号：US16967504

申请日：2019-01-28

Applicant: Nitto Denko Corporation

Inventor： Naofumi KOSAKA ,  Yosuke SHIMIZU ,  Satoshi HONDA ,  Taiki SHIMOKURI ,  Shou TAKARADA ,  Masayuki SATAKE ,  Kenichi OKADA ,  Atsushi TAKASHIMA ,  Ginji MIZUHARA ,  Masayuki OKAMOTO ,  Ryoko ASAI

IPC: C09J7/38 ,  C09J11/08 ,  C09J11/06 ,  C09J133/08 ,  B32B27/30 ,  B32B27/18 ,  B32B7/06 ,  B32B37/12 ,  B32B37/18 ,  B32B38/10

Abstract: Provided is a PSA sheet having a PSA layer. The PSA layer includes a layer A forming at least one surface thereof. The PSA sheet has an adhesive strength N0 of 2.0 N/10 mm or greater, after one day at room temperature following application of the layer A side to a surface of an alkaline float glass plate as an adherend having a contact angle of 5°-10° with distilled water; has an N1 to N0 reduction rate of 30% or lower, wherein N1 is a water-resistant adhesive strength measured after stored at room temperature for one day, immersed in water for 30 minutes, taken out from the water and then residual water is wiped off; and has an N2 to N0 reduction rate of 40% or higher, wherein N2 is a water-peel strength measured after stored at room temperature for one day, 20 μL distilled water is dropped onto the adherend and is allowed to enter a PSA layer/adherend interfacial edge. N2 is measured at a tensile speed of 300 mm/min at a peel angle of 180°.

公开(公告)号：US20140147668A1

公开(公告)日：2014-05-29

申请号：US14171199

申请日：2014-02-03

Applicant: NITTO DENKO CORPORATION

Inventor： Masato YAMAGATA ,  Masayuki OKAMOTO ,  Kiyoe SHIGETOMI ,  Ryo KANNO

IPC: C09J7/02

CPC classification number: C08L33/12 ,  C08F220/14 ,  C08F220/18 ,  C08G77/46 ,  C08L33/10 ,  C08L2205/05 ,  C09D171/02 ,  C09J7/22 ,  C09J7/38 ,  C09J7/385 ,  C09J133/06 ,  C09J183/12 ,  C09J2201/622 ,  C09J2203/318 ,  C09J2433/00 ,  Y10T428/2848 ,  Y10T428/2891 ,  C08F2220/1858 ,  C08F220/20 ,  C08F2220/1875 ,  C08F2220/1841 ,  C08F2220/1825 ,  C08F226/10 ,  C08L33/06

Abstract: A pressure-sensitive adhesive composition includes: 100 parts by mass of a polymer (A) having a glass transition temperature lower than 0° C.; 0.05 parts by mass to 3 parts by mass of a (meth)acrylic polymer (B) having a weight average molecular weight (MwB) of 1000≦MwB

Abstract translation: 压敏粘合剂组合物包括：100质量份的玻璃化转变温度低于0℃的聚合物（A）; 0.05质量份〜3质量份的重均分子量（MwB）为1000＆lt; 1EE的（甲基）丙烯酸系聚合物（B）; MwB <30000，作为单体单元，含有（甲基） 由以下通式（1）表示的脂环结构： 0.005质量份〜1质量份的离子性化合物（C）; 和0.01质量份〜2.5质量份具有聚氧化烯链的化合物（D）。 CH2 = C（R1）COOR2（1）[其中R1是氢原子或甲基，R2是具有脂环结构的脂环族烃基]

公开(公告)号：US20130177758A1

公开(公告)日：2013-07-11

申请号：US13778880

申请日：2013-02-27

Applicant: Nitto Denko Corporation

Inventor： Kiyoe SHIGETOMI ,  Masayuki OKAMOTO ,  Masato YAMAGATA ,  Jun AKIYAMA

IPC: C09J177/00 ,  C09J7/02 ,  C09J133/10

CPC classification number: C09J177/00 ,  C08K7/00 ,  C08L57/02 ,  C09J7/10 ,  C09J7/22 ,  C09J7/385 ,  C09J133/06 ,  C09J133/10 ,  C09J2201/36 ,  C09J2201/606 ,  C09J2205/106 ,  C09J2205/11 ,  C09J2400/00 ,  C09J2400/24 ,  C09J2433/00 ,  Y10T428/249986 ,  Y10T428/2848 ,  Y10T428/2891

Abstract: An acrylic pressure-sensitive adhesive composition contains 100 parts by mass of an acrylic polymer (A), 1 to 70 parts by mass of a (meth)acrylic polymer (B) having a weight average molecular weight (Mw) of 1000≦Mw

Abstract translation: 丙烯酸类压敏粘合剂组合物含有100质量份丙烯酸类聚合物（A），1〜70质量份重均分子量（Mw）为1000〜（Mw）的（甲基）丙烯酸系聚合物（B） 30000和1〜50质量份氢化增粘树脂（C）。 （甲基）丙烯酸系聚合物（B）是作为粘合剂组合物的重均分子量小于丙烯酸类聚合物（A）的聚合物，与氢化增粘树脂（C ）。

公开(公告)号：US20240368435A1

公开(公告)日：2024-11-07

申请号：US18773082

申请日：2024-07-15

Applicant: NITTO DENKO CORPORATION

Inventor： Naofumi KOSAKA ,  Yosuke SHIMIZU ,  Satoshi HONDA ,  Taiki SHIMOKURI ,  Shou TAKARADA ,  Masayuki SATAKE ,  Kenichi OKADA ,  Atsushi TAKASHIMA ,  Ginji MIZUHARA ,  Masayuki OKAMOTO ,  Ryoko ASAI

IPC: C09J7/38 ,  B32B7/06 ,  B32B27/18 ,  B32B27/30 ,  B32B37/12 ,  B32B37/18 ,  B32B38/10 ,  C09J11/06 ,  C09J11/08 ,  C09J133/08

Abstract: Provided is a PSA sheet having a PSA layer. The PSA layer includes a layer A forming at least one surface thereof. The PSA sheet has an adhesive strength N0 of 2.0 N/10 mm or greater, after one day at room temperature following application of the layer A side to a surface of an alkaline float glass plate as an adherend having a contact angle of 5°-10° with distilled water; has an N1 to N0 reduction rate of 30% or lower, wherein N1 is a water-resistant adhesive strength measured after stored at room temperature for one day, immersed in water for 30 minutes, taken out from the water and then residual water is wiped off, and has an N2 to N0 reduction rate of 40% or higher, wherein N2 is a water-peel strength measured after stored at room temperature for one day, 20 μL distilled water is dropped onto the adherend and is allowed to enter a PSA layer/adherend interfacial edge. N2 is measured at a tensile speed of 300 mm/min at a peel angle of 180°.

公开(公告)号：US20210018666A1

公开(公告)日：2021-01-21

申请号：US16975451

申请日：2019-02-19

Applicant: NITTO DENKO CORPORATION

Inventor： Ryo KANNO ,  Masayuki OKAMOTO ,  Noritsugu DAIGAKU ,  Tatsuya YAMASAKI

IPC: G02B5/30 ,  G02F1/1335 ,  G02B1/18 ,  G02B1/12 ,  G02B1/14

Abstract: A polarizing film has a transparent protective film provided on at least one side of a polarizer through an adhesive layer. The transparent protective film is a cellulose-based resin film. The adhesive layer is formed by a cured layer obtained by irradiating an active energy ray-curable adhesive composition with active energy rays. The composition contains 0.0% by weight to 4.0% by weight of an active energy ray-curable compound (A) having an SP value of 29.0 (MJ/m3)1/2 to 32.0 (MJ/m3)1/2, 5.0% by weight to 98.0% by weight of an active energy ray-curable compound (B) having the SP value of 18.0 (MJ/m3)1/2 to 21.0 (MJ/m3)1/2 (exclusive of 21.0 (MJ/m3)1/2), and 5.0% by weight to 98.0% by weight of an active energy ray-curable compound (C) having the SP value of 21.0 (MJ/m3)1/2 to 26.0 (MJ/m3)1/2 on a basis of 100% by weight of a total amount of the composition.

公开(公告)号：US20150024198A1

公开(公告)日：2015-01-22

申请号：US14506225

申请日：2014-10-03

Applicant: NITTO DENKO CORPORATION

Inventor： Masato YAMAGATA ,  Masayuki OKAMOTO ,  Kiyoe SHIGETOMI ,  Ryo KANNO

IPC: C09J133/14 ,  C09J7/02

CPC classification number: C09J133/14 ,  B32B7/12 ,  B32B27/08 ,  B32B27/283 ,  B32B27/308 ,  B32B2307/21 ,  B32B2307/412 ,  B32B2551/00 ,  C08G77/46 ,  C08L33/10 ,  C09J7/20 ,  C09J7/22 ,  C09J7/38 ,  C09J7/385 ,  C09J133/04 ,  C09J133/06 ,  C09J201/00 ,  C09J2483/00 ,  G02B1/14 ,  G02B5/30 ,  Y10T428/2891 ,  Y10T428/31663

Abstract: A pressure-sensitive adhesive composition includes: 100 parts by mass of a polymer (A) (Tg:lower than 0° C.); 0.05 to 3 parts by mass of a (meth)acrylic polymer (B) (MWB:1000≦MWB

Abstract translation: 压敏粘合剂组合物包括：100质量份聚合物（A）（Tg：低于0℃）; 0.05〜3质量份（甲基）丙烯酸系聚合物（B）（MWB：1000＆amp; MW; MWB <50000，Tg：30〜300℃） 和由以下通式（C1）〜（C3）中的任一个表示的具有聚氧化烯链的有机聚硅氧烷化合物（C）。 [在（C1）〜（C3）中，R1为一价有机基团，R2〜R4各自为亚烷基，R5为氢或有机基，a和b分别为0〜1000的整数 但是，它们一次不是0）; 在（C1）中，m和n分别为0〜1000的整数（但一次不为0）; 和（C2）和（C3）中，m为1〜2000的整数。]

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：US20210348036A1

公开(公告)日：2021-11-11

申请号：US17262584

申请日：2019-07-29

Applicant: NITTO DENKO CORPORATION

Inventor： Masayuki OKAMOTO ,  Naofumi KOSAKA ,  Satoshi HONDA ,  Yosuke SHIMIZU ,  Ryoko ASAI

IPC: C09J7/38 ,  C09J7/10

Abstract: Provided is an optical PSA composition that can be easily peeled using an aqueous liquid such as water and has sufficient adhesive strength. An optical PSA composition comprising an acrylic polymer is provided. The PSA composition comprises at least one species of compound A selected among surfactants and compounds having polyoxyalkylene backbones. The monomers forming the acrylic polymer comprises less than 20 wt % alkoxyalkyl (meth)acrylate and less than 20 wt % alkoxypolyalkylene glycol (meth)acrylate. Alternatively, the compound A content is less than 1 part by weight to 100 parts by weight of the acrylic polymer.

公开(公告)号：US20140037951A1

公开(公告)日：2014-02-06

申请号：US13954192

申请日：2013-07-30

Applicant: NITTO DENKO CORPORATION

Inventor： Kiyoe SHIGETOMI ,  Ryo KANNO ,  Masayuki OKAMOTO ,  Masato YAMAGATA

IPC: C09J7/02

CPC classification number: C08L33/14 ,  C08F220/18 ,  C08F220/28 ,  C08L2205/02 ,  C09J4/06 ,  C09J7/385 ,  C09J133/08 ,  C09J2201/622 ,  C09J2203/318 ,  Y10T428/2891 ,  C08F2220/1858 ,  C08F226/10 ,  C08F2220/286 ,  C08F2220/1875 ,  C08F2220/1841 ,  C08F265/06

Abstract: A pressure-sensitive adhesive composition includes: 100 parts by mass of a polymer (A) having a glass transition temperature lower than 0° C.; and 0.05 parts by mass to 20 parts by mass of a (meth)acrylic polymer (B) having a weight average molecular weight (MwB) of 1000≦MwB

Abstract translation: 压敏粘合剂组合物包括：100质量份的玻璃化转变温度低于0℃的聚合物（A）; 和0.05质量份〜20质量份的重均分子量（MwB）为1000〜MwB <30000的（甲基）丙烯酸系聚合物（B），其含有（甲基）丙烯酸单体作为单体单元， 由以下通式（1）表示的脂环结构和具有聚氧化烯骨架的单体：CH2 = C（R1）COOR2（1）[其中R1表示氢原子或甲基，R2表示具有 脂环结构。]