公开(公告)号：US20140302314A1

公开(公告)日：2014-10-09

申请号：US14247704

申请日：2014-04-08

Applicant: NITTO DENKO CORPORATION

Inventor： Kyoko Takashima ,  Yu Morimoto ,  Kazuma Mitsui ,  Kousuke Yonezaki ,  Tsunaki Kitahara

IPC: C09J133/08 ,  C09J7/02

CPC classification number: C09J133/08 ,  C08F220/18 ,  C08L2201/54 ,  C08L2312/00 ,  C09J7/385 ,  Y10T428/2891 ,  C08F2220/1858 ,  C08F220/06 ,  C08F220/14

Abstract: Provided is a water-dispersible acrylic pressure-sensitive adhesive composition which can form a pressure-sensitive adhesive layer excellent in antistatic property, repeeling property (light peeling property), and appearance property. The repeelable water-dispersible acrylic pressure-sensitive adhesive composition of the present invention contains an acrylic emulsion-based polymer composed of 70 to 99.5% by weight of a (meth)acrylic acid alkyl ester and 0.5 to 10% by weight of a carboxyl group-containing unsaturated monomer as monomer components, a crosslinking agent, an ionic compound, and a nonionic surfactant with an HLB value of 6 or more.

Abstract translation: 本发明提供一种能够形成抗静电性，重复性（光剥离性）和外观性优异的压敏粘合剂层的水分散性丙烯酸类粘合剂组合物。 本发明的可重复使用的水分散性丙烯酸类粘合剂组合物含有由70〜99.5重量％的（甲基）丙烯酸烷基酯和0.5〜10重量％的羧基组成的丙烯酸系乳液系聚合物 作为单体成分的不饱和单体，HLB值为6以上的交联剂，离子性化合物和非离子表面活性剂。

公开(公告)号：US10105929B2

公开(公告)日：2018-10-23

申请号：US14914359

申请日：2014-08-21

Applicant: NITTO DENKO CORPORATION

Inventor： Kohei Doi ,  Kunio Nagasaki ,  Tetsuya Otsuka ,  Mika Okada ,  Kazumichi Kato ,  Hideyuki Tokuyama ,  Tsunaki Kitahara ,  Tadao Takahashi ,  Kiichiro Matsushita

IPC: B32B7/12 ,  B32B5/18 ,  H04M1/18 ,  H05K5/00 ,  C08J9/30 ,  C09J7/02 ,  B32B7/06 ,  B32B27/06 ,  B32B27/30 ,  B32B27/36 ,  H04M1/02

Abstract: A foamed sheet according to the present invention has a thickness of 30 to 500 μm and includes a foam. The foam has a density of 0.2 to 0.7 g/cm3, an average cell diameter of 10 to 150 μm, and a peak top of loss tangent (tan δ) occurring in a temperature range of from −30° C. to 30° C., where the loss tangent is defined as the ratio of a loss modulus to a storage modulus determined at an angular frequency of 1 rad/s in dynamic viscoelastic measurement of the foam. The foam preferably has a maximum of the loss tangent (tan δ) in the temperature range of from −30° C. to 30° C. of 0.2 or more.