公开(公告)号：US20220314587A1

公开(公告)日：2022-10-06

申请号：US17597263

申请日：2020-01-30

Applicant: NITTO DENKO CORPORATION

Inventor： Fumika KAWATAKE ,  Asuka GOMI ,  Kenichi OKADA ,  Akinori TAMURA

IPC: B32B27/08 ,  B32B27/30 ,  B32B27/28 ,  B32B7/12 ,  B32B7/06 ,  C08F220/18 ,  C08F220/36 ,  C08J5/18

Abstract: A surface modification sheet (X) of the present invention includes a release sheet (10) and a surface modification layer (20) thereon. The surface modification layer (20) contains a polymer having a side chain containing an ethylenic double bond. The side chain of the polymer preferably includes a unit derived from an isocyanate compound containing the ethylenic double bond.

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。

公开(公告)号：US20240093060A1

公开(公告)日：2024-03-21

申请号：US18275053

申请日：2022-01-26

Applicant: NITTO DENKO CORPORATION

Inventor： Akinori TAMURA ,  Itsuhiro HATANAKA ,  Nobukazu NEGISHI

IPC: C09J7/10 ,  C09J7/35 ,  C09J7/38

CPC classification number: C09J7/10 ,  C09J7/35 ,  C09J7/385 ,  C09J2400/20

Abstract: Provided is a hot-melt PSA composition having a low viscosity when melted with heat and capable of suitably forming a PSA layer. A hot-melt PSA composition comprising a base polymer is provided. The base polymer comprises acrylic polymers A and B. The acrylic polymer A is a polymer of monomers comprising, as the primary component, a (meth)acrylic monomer A having an alkyl group with 4 to 8 carbon atoms. The acrylic polymer B is a polymer of monomers comprising, as a primary component, a (meth)acrylic monomer B having an alkyl group with 9 to 12 carbon atoms. In the base polymer, with the total amount of the acrylic polymers A and B being 100% by weight, the acrylic polymer B content is 10% by weight or more and 90% by weight or less.