公开(公告)号：US20160272848A1

公开(公告)日：2016-09-22

申请号：US15034041

申请日：2014-10-22

Applicant: NITTO DENKO CORPORATION

Inventor： Toshihide SUZUKI ,  Naoki NAKAYAMA

IPC: C09J7/00 ,  C09J133/08 ,  C09J5/00

CPC classification number: C09J7/00 ,  C09J4/06 ,  C09J5/00 ,  C09J7/10 ,  C09J133/08 ,  C09J2201/622 ,  C09J2203/326 ,  C09J2205/31 ,  C09J2433/00

Abstract: Provided is a double-sided pressure-sensitive adhesive sheet for securing portable electronic device members. This double-sided pressure-sensitive adhesive sheet, when used for securing a constitutional member in a portable electronic device, surely offers high adhesive strength even when used in a small area. In addition, the double-sided pressure-sensitive adhesive sheet restrains separation of the constitutional member even when the portable electronic device is subjected to drop impact. Also provided is a method for producing a portable electronic device using the double-sided pressure-sensitive adhesive sheet for securing portable electronic device members. A double-sided pressure-sensitive adhesive sheet according to the present invention for securing portable electronic device members includes an acrylic pressure-sensitive adhesive layer capable of curing by radiation irradiation. The acrylic pressure-sensitive adhesive layer has a glass transition temperature after curing of −30° C. or lower and has a storage modulus after curing of 6.0×104 Pa or more at 70° C.

Abstract translation: 提供一种用于固定便携式电子设备构件的双面压敏粘合片。 这种双面压敏粘合片当用于将构成部件固定在便携式电子装置中时，即使在小面积使用时也确实提供高的粘合强度。 此外，即使在便携式电子装置遭受落下冲击时，双面压敏粘合片也限制了构成构件的分离。 还提供了一种使用双面压敏粘合片制造便携式电子装置的方法，用于确保便携式电子装置部件。 根据本发明的用于固定便携式电子设备部件的双面压敏粘合片包括能够通过辐射照射固化的丙烯酸类压敏粘合剂层。 丙烯酸类压敏粘合剂层的固化后的玻璃化转变温度为-30℃以下，在70℃下的固化后的储能模量为6.0×10 4 Pa以上。

公开(公告)号：US20130183521A1

公开(公告)日：2013-07-18

申请号：US13743870

申请日：2013-01-17

Applicant: NITTO DENKO CORPORATION

Inventor： Noboru YOSHIDA ,  Takahisa MIZUTORI ,  Toshihide SUZUKI ,  Masaaki SATOU

IPC: C09J7/02 ,  B32B27/08

CPC classification number: B32B27/08 ,  C09D133/02 ,  C09J7/29 ,  C09J2201/622 ,  C09J2433/00 ,  C09J2467/006 ,  Y10T428/2848

Abstract: A translucent light-shielding tape has a base material layer, a light-shielding layer and an adhesive agent layer. The base material layer is formed with a plastic material such as polyethylene terephthalate and the like. The light-shielding layer is laminated on one of the main surfaces of the base material layer. The light-shielding layer is, for example, a black print layer formed with printing of black ink. The adhesive agent layer is laminated on the other of the main surfaces of the base material layer. As the adhesive agent layer, an acrylic-based polymer is suitably used. The translucent light-shielding tape has 0.010 to 10% of the permeability with regards to light of 550 nm.

Abstract translation: 半透明遮光带具有基材层，遮光层和粘合剂层。 基材层由聚对苯二甲酸乙二醇酯等塑料材料形成。 遮光层层压在基材层的主表面之一上。 遮光层例如是由黑色墨水的印刷形成的黑色印刷层。 粘合剂层层压在基材层的另一个主表面上。 作为粘合剂层，适合使用丙烯酸类聚合物。 半透明遮光带相对于550nm的光的透过率为0.010〜10％。

公开(公告)号：US20130216778A1

公开(公告)日：2013-08-22

申请号：US13768690

申请日：2013-02-15

Applicant: NITTO DENKO CORPORATION

Inventor： Noboru YOSHIDA ,  Takahisa MIZUTORI ,  Toshihide SUZUKI ,  Masaaki SATOU

IPC: C09J7/02

CPC classification number: C09J7/38 ,  C09J7/29 ,  C09J133/08 ,  C09J2201/606 ,  C09J2433/00 ,  C09J2467/006 ,  Y10T428/24355

Abstract: A fingerprint-resistant pressure-sensitive adhesive tape includes has a core layer including a substrate layer and a colored layer, a pressure-sensitive adhesive layer, and a fingerprint-resistant treated layer. The substrate layer is formed of a plastic material, such as polyethylene terephthalate. The colored layer is laminated on one major surface of the substrate layer. The colored layer is a black printed layer formed, for example, by printing black ink. The pressure-sensitive adhesive layer is laminated on a major surface of the colored layer, the major surface being opposite to the substrate layer. An acrylic polymer is preferably used for the pressure-sensitive adhesive layer. The fingerprint-resistant treated layer is formed on a major surface of the substrate layer, the major surface being opposite to the colored layer. Wa of the outer surface of the fingerprint-resistant treated layer is 150 angstroms or more and Ra thereof is 2000 angstroms or more.

Abstract translation: 耐指纹胶粘带包括具有基材层和着色层的芯层，压敏粘合剂层和耐指纹处理层。 基材层由诸如聚对苯二甲酸乙二醇酯之类的塑料材料形成。 着色层层叠在基材层的一个主表面上。 着色层是例如通过印刷黑色墨水形成的黑色印刷层。 该压敏粘合剂层层叠在着色层的主表面上，该主表面与基底层相对。 丙烯酸聚合物优选用于压敏粘合剂层。 耐指纹处理层形成在基底层的主表面上，主表面与着色层相对。 耐指纹处理层的外表面的Wa为150埃以上，Ra为2000埃以上。

公开(公告)号：US20220025222A1

公开(公告)日：2022-01-27

申请号：US17298320

申请日：2019-11-12

Applicant: NITTO DENKO CORPORATION

Inventor： Hiroyuki HAMADA ,  Toshihide SUZUKI ,  Hyunhee SHIM

IPC: C09J7/38 ,  C09J7/21

Abstract: Provided is a water-dispersed PSA composition capable of bringing about greater water resistance. The water-dispersed PSA composition provided by this invention comprises an acrylic polymer as base polymer, a water-dispersed tackifier resin, and a polyacrylic acid. The polyacrylic acid has a number average molecular weight of 2000 to 550×104. The polyacrylic acid content is 0.3 part by weight or higher and 7 parts by weight or lower to 100 parts by weight of the base polymer.

公开(公告)号：US20170218231A1

公开(公告)日：2017-08-03

申请号：US15515191

申请日：2015-09-28

Applicant: NITTO DENKO CORPORATION

Inventor： Toshihide SUZUKI

IPC: C09J7/00 ,  C09J133/00

CPC classification number: C09J7/00 ,  C08L33/14 ,  C08L2312/06 ,  C09J7/10 ,  C09J133/00 ,  C09J133/02 ,  C09J2201/622 ,  C09J2203/326 ,  C09J2205/31 ,  C09J2433/00 ,  Y10T428/1059 ,  Y10T428/1082

Abstract: A pressure-sensitive adhesive sheet according to the present invention includes an irradiation-curable acrylic pressure-sensitive adhesive layer. The acrylic pressure-sensitive adhesive layer includes an acrylic polymer and a multifunctional acrylic oligomer. The acrylic pressure-sensitive adhesive layer, after curing, has a Young's modulus of 500 kPa to 10000 kPa at 23° C. The acrylic pressure-sensitive adhesive layer, after curing, has an adhesive strength of 3.0 N/20 mm or more. The acrylic pressure-sensitive adhesive layer before curing may have an adhesive strength of typically 3.0 N/20 mm or more. The acrylic pressure-sensitive adhesive layer before curing may have a Young's modulus of typically 30 kPa to 200 kPa at 23° C.

公开(公告)号：US20130209798A1

公开(公告)日：2013-08-15

申请号：US13763892

申请日：2013-02-11

Applicant: Nitto Denko Corporation

Inventor： Masaaki SATOU ,  Toshihide SUZUKI ,  Naoki NAKAYAMA ,  Akinori TAMURA ,  Noboru YOSHIDA ,  Takahisa MIZUTORI

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

CPC classification number: C09J133/02 ,  C08F4/06 ,  C09J7/22 ,  C09J7/38 ,  C09J133/10 ,  C09J2201/128 ,  C09J2201/622 ,  C09J2203/326 ,  C09J2433/00 ,  Y10T428/2848

Abstract: A double-sided pressure-sensitive adhesive tape includes: a substrate; a first pressure-sensitive adhesive layer provided on one surface of the substrate; and a second pressure-sensitive adhesive layer provided on the other surface of the substrate. At least one of the first pressure-sensitive adhesive layer and the second pressure-sensitive adhesive layer contains both an acrylic polymer and an acrylic oligomer whose weight average molecular weight is 20000 or less and whose monomer is different from that of the acrylic polymer. The content of a tackifier for providing tackiness is less than 5% by mass. By containing the acrylic oligomer whose monomer is different from that of the acrylic polymer in at least one of the first pressure-sensitive adhesive layer and the second pressure-sensitive adhesive layer, the drop impact resistance in a low-temperature atmosphere is improved.

Abstract translation: 双面压敏粘合带包括：基材; 设置在所述基板的一个表面上的第一压敏粘合剂层; 以及设置在基板的另一个表面上的第二压敏粘合剂层。 第一压敏粘合剂层和第二压敏粘合剂层中的至少一个含有丙烯酸类聚合物和重均分子量为20000以下并且其单体与丙烯酸类聚合物的单体不同的丙烯酸低聚物。 用于提供粘性的增粘剂的含量小于5质量％。 通过在第一压敏粘合剂层和第二压敏粘合剂层中的至少一个中含有单体与丙烯酸类聚合物的单体不同的丙烯酸低聚物，提高了低温气氛中的耐滴落冲击性。