公开(公告)号：US20140296401A1

公开(公告)日：2014-10-02

申请号：US14227700

申请日：2014-03-27

申请人： NITTO DENKO CORPORATION

发明人： Natsuko WATANABE ,  Kazuma MITSUI ,  Tatsumi AMANO ,  Kenjiro NIIMI

IPC分类号： C09J11/06

CPC分类号： C09J11/06 ,  C09J7/385

摘要： A pressure-sensitive adhesive layer contains a base polymer and has properties of (1) and (2) below: in a case where a pressure-sensitive adhesive sheet A is laminated to an adherend X surface, they are left to stand at a temperature of 23° C. and a humidity of 30% for 12 hours, and the pressure-sensitive adhesive sheet A is then separated, (1) a water contact angle A on the adherend X surface from which the pressure-sensitive adhesive sheet A has been separated is 70° or less, and (2) a pressure-sensitive adhesive strength of a pressure-sensitive adhesive tape B with respect to the adherend X surface from which the pressure-sensitive adhesive sheet A has been separated is higher than that of the pressure-sensitive adhesive tape B with respect to the adherend X surface not subjected to any treatment.

摘要翻译： 压敏粘合剂层含有基础聚合物，具有以下（1）和（2）的性质：在将粘合片A层压到被粘物X表面的情况下，将其保持在温度 23℃，湿度30％12小时，然后分离压敏粘合片A，（1）粘合片A所具有的粘附体X表面上的水接触角A 被分离的情况为70°以下，（2）压敏粘合带B相对于粘合片A分离后的被粘物X表面的压敏粘合强度高于 粘合带B相对于未被处理的被粘物X表面。

公开(公告)号：US20170335144A1

公开(公告)日：2017-11-23

申请号：US15448815

申请日：2017-08-10

申请人： NITTO DENKO CORPORATION

发明人： Kazuma MITSUI ,  Masato FUJITA ,  Takahiro NONAKA ,  Masahiro EHARA

IPC分类号： C09J7/02 ,  G02F1/1333 ,  G02F1/1335 ,  G02B5/30 ,  C09J133/06

CPC分类号： G02F1/13338 ,  C09J7/22 ,  C09J7/385 ,  C09J133/066 ,  C09J139/06 ,  C09J2201/128 ,  C09J2201/134 ,  C09J2201/606 ,  C09J2201/622 ,  C09J2203/318 ,  C09J2433/00 ,  C09J2467/006 ,  C09J2469/006 ,  G02B5/3025 ,  G02B5/305 ,  G02F1/133528 ,  G02F2202/28

摘要： An optical adhesive sheet having a lamination structure includes a first adhesive layer, a second adhesive layer, and a substrate located between the first and the second adhesive layers. The first adhesive layer has a thickness of 30 μm or more and a storage modulus of 1.0×104 Pa or more at 95° C. The second adhesive layer has a loss tangent of 0.08 or more at 95° C. A polarizing film having a lamination structure including a polarizing film and the optical adhesive sheet. A liquid crystal display device having a multilayer structure including a resin-made covering member, a liquid crystal panel, and the optical adhesive sheet. In the liquid crystal display device, the optical adhesive sheet is attached to the resin-made covering member on the side of the first adhesive layer and attached to the polarizing film of the liquid crystal panel on the side of the second adhesive layer.

公开(公告)号：US20140030519A1

公开(公告)日：2014-01-30

申请号：US13952307

申请日：2013-07-26

申请人： NITTO DENKO CORPORATION

发明人： Yu MORIMOTO ,  Kousuke YONEZAKI ,  Tatsumi AMANO ,  Kazuma MITSUI

IPC分类号： C09J7/02

CPC分类号： C09J7/385 ,  C09J2203/306 ,  Y10T428/2857 ,  Y10T428/2891

摘要： An aim of the present invention is to provide a pressure-sensitive adhesive sheet excellent in antistatic property, re-peelable property, and adherability (tackiness). A pressure-sensitive adhesive sheet according to the present invention includes a substrate and a pressure-sensitive adhesive layer on at least one surface of the substrate, wherein the pressure-sensitive adhesive layer is formed of a water dispersion type acryl-based pressure-sensitive adhesive composition containing an acrylic emulsion-based polymer containing at least 70 to 99.5% by weight of a (meth)acrylic acid alkyl ester (A) and 0.5 to 10% by weight of a carboxyl-containing unsaturated monomer (B) as raw material monomers and an ionic compound; a peeling power ratio ((B)/(A)) of a peeling power (B) for an adherend surface with a surface roughness Ra of 250 to 450 μm and low polarity to a peeling power (A) for an adherend surface with a surface roughness Ra of 5 to 50 μm and high polarity measured at a peeling speed of 30 m/minute and a peeling angle of 180° is 0.7 to 1.5; the adhesion to the low polarity adherend surface is 99.0% or higher; and an initial peeling electrification voltage (absolute value) is 1.0 kV or lower.

摘要翻译： 本发明的目的是提供抗静电性，再剥离性和粘合性（粘合性）优异的粘合片。 根据本发明的压敏粘合片包括在基材的至少一个表面上的基材和压敏粘合剂层，其中压敏粘合剂层由水分散型丙烯酸类压敏粘合剂形成 含有至少70-99.5重量％的（甲基）丙烯酸烷基酯（A）和0.5-10重量％的含羧基的不饱和单体（B）作为原料的丙烯酸乳液基聚合物的粘合剂组合物 单体和离子化合物; 表面粗糙度Ra为250〜450μm的被粘物表面的剥离力（B）/剥离强度（B）/（A）），对于被粘物表面的剥离强度（A）为低 表面粗糙度Ra为5〜50μm，剥离速度为30m /分，剥离角为180°时测定的极性为0.7〜1.5， 对低极性被粘物表面的粘附性为99.0％以上; 初始剥离带电电压（绝对值）为1.0kV以下。

公开(公告)号：US20130280527A1

公开(公告)日：2013-10-24

申请号：US13867353

申请日：2013-04-22

申请人： NITTO DENKO CORPORATION

发明人： Kenjiro NIIMI ,  Natsuki UKEI ,  Hiromoto HARUTA ,  Kenichi KATAOKA ,  Kazuma MITSUI ,  Yu MORIMOTO ,  Tatsumi AMANO

IPC分类号： C09J7/02

CPC分类号： G02B1/16 ,  C09J7/29 ,  C09J7/385 ,  C09J2433/00 ,  G02B1/105 ,  G02B1/14 ,  Y10T428/2848

摘要： The invention provides a surface protection film including a top coat layer on a first face of a substrate, and a pressure-sensitive adhesive layer on a second face. The top coat layer includes a wax as a slip agent, and a polyester resin as a binder. Here, the wax is an ester of a higher fatty acid and a higher alcohol.

摘要翻译： 本发明提供一种表面保护膜，其包括在基板的第一面上的顶涂层和在第二面上的压敏粘合剂层。 顶涂层包括作为增滑剂的蜡和作为粘合剂的聚酯树脂。 这里，蜡是高级脂肪酸和高级醇的酯。

公开(公告)号：US20230099594A1

公开(公告)日：2023-03-30

申请号：US17951378

申请日：2022-09-23

申请人： NITTO DENKO CORPORATION

发明人： Masamichi MATSUMOTO ,  Hirofumi KATAMI ,  Sho TAKARADA ,  Ryohei SAWAZAKI ,  Kazuma MITSUI

IPC分类号： C09J133/08 ,  C09J7/28 ,  C09J7/38 ,  B32B7/12

摘要： An object of the present invention is to provide a pressure-sensitive adhesive composition that enables a pressure-sensitive adhesive layer to be formed, the pressure-sensitive adhesive layer allowing the appearance of a display device and an input device to be unlikely to deteriorate even under low pressure conditions, a pressure-sensitive adhesive layer, a pressure-sensitive adhesive sheet, an optical member, and a touch panel. The pressure-sensitive adhesive composition of the present invention contains an acrylic polymer (A) and a hydrogenated polyolefinic resin (B). The acrylic polymer (A) contains a (meth)acrylic alkyl ester having an alkyl group having 8 or more carbon atoms as a constituent monomer component. The hydrogenated polyolefinic resin (B) contains a hydrogenated polyolefin.

公开(公告)号：US20140030515A1

公开(公告)日：2014-01-30

申请号：US13951968

申请日：2013-07-26

申请人： NITTO DENKO CORPORATION

发明人： Yu MORIMOTO ,  Kazuma MITSUI ,  Tatsumi AMANO ,  Kousuke YONEZAKI

IPC分类号： C09J11/06 ,  C09J7/02

CPC分类号： C09J11/06 ,  C08K5/1515 ,  C08K5/3445 ,  C08L2201/54 ,  C09J7/385 ,  C09J133/08 ,  C09J2203/318 ,  C09J2205/102 ,  Y10T428/2848 ,  Y10T428/2861 ,  C08K5/0025 ,  C08F2220/1858 ,  C08F220/14 ,  C08F220/06

摘要： An aim of the prevention invention is to provide a re-peelable water dispersion type acryl-based pressure-sensitive adhesive composition, which can prevent electrification at the time of peeling off under low humidity environments (an antistatic property for peeling off in low humidity) independently of an adherend and which can form a pressure-sensitive adhesive layer excellent in adherability and re-peelable properties. The re-peelable water dispersion type acryl-based pressure-sensitive adhesive composition of the present invention contains an acrylic emulsion-based polymer composed of a (meth)acrylic acid alkyl ester in an amount of 70 to 99.5% by weight and a carboxyl-containing unsaturated monomer in an amount of 0.5 to 10% by weight as raw material monomers, a crosslinking agent, and an ionic compound, wherein the acrylic emulsion-based polymer has an average particle diameter of 130 to 550 nm.

摘要翻译： 本发明的目的在于提供一种可剥离水分散型丙烯酸系粘合剂组合物，其可以防止在低湿度环境下剥离时的起电（在低湿度下剥离的抗静电性） 独立于被粘物，并且可以形成粘合性和再剥离性优异的压敏粘合剂层。 本发明的可再剥离型水性分散型丙烯酸系粘合剂组合物含有由（甲基）丙烯酸烷基酯组成的丙烯酸系乳液系聚合物，其含量为70〜99.5重量％ 含有0.5〜10重量％的不饱和单体作为原料单体，交联剂和离子性化合物，其中丙烯酸乳液类聚合物的平均粒径为130〜550nm。