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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
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.
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公开(公告)号：US20200002581A1
公开(公告)日：2020-01-02
申请号：US16490806
申请日：2018-03-01
Applicant: NITTO DENKO CORPORATION
Inventor： Kaori AKAMATSU , Kaori MIZOBATA , Ryo AWANE , Koji AKAZAWA , Junji YOKOYAMA , Akira HIRAO , Yosuke SHIMIZU , Akiko TANAKA
IPC: C09J9/00 , C09J133/08 , C09J11/06 , C08K5/521 , C09J133/10
Abstract: An object of the present invention is to provide an electrically debondable composition for forming an electrically debondable adhesive layer suitable for suppressing corrosion of a metal adherend surface. The present invention further provides an adhesive sheet having the electrically debondable adhesive layer, and an adhered body including the adhesive sheet. An electrically debondable composition of the present invention includes a polymer, an ionic liquid, and at least one additive selected from the group consisting of a carbodiimide compound, an adsorptive inhibitor and a chelate-forming metal deactivator.
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公开(公告)号：US20250145870A1
公开(公告)日：2025-05-08
申请号：US19008195
申请日：2025-01-02
Applicant: NITTO DENKO CORPORATION
Inventor： Kaori AKAMATSU , Kaori MIZOBATA , Ryo AWANE , Koji AKAZAWA , Junji YOKOYAMA , Akira HIRAO , Yosuke SHIMIZU , Akiko TANAKA
IPC: C09J9/00 , C08K5/00 , C08K5/07 , C08K5/17 , C08K5/29 , C08K5/3472 , C08K5/435 , C08K5/521 , C09J11/06 , C09J133/08 , C09J133/10
Abstract: An object of the present invention is to provide an electrically debondable composition for forming an electrically debondable adhesive layer suitable for suppressing corrosion of a metal adherend surface. The present invention further provides an adhesive sheet having the electrically debondable adhesive layer, and an adhered body including the adhesive sheet. An electrically debondable composition of the present invention includes a polymer, an ionic liquid, and at least one additive selected from the group consisting of a carbodiimide compound, an adsorptive inhibitor and a chelate-forming metal deactiator.
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公开(公告)号：US20230392044A1
公开(公告)日：2023-12-07
申请号：US18032446
申请日：2021-10-13
Applicant: NITTO DENKO CORPORATION
Inventor： Yosuke SHIMIZU
CPC classification number: C09J5/00 , C09J7/385 , C09J11/06 , B32B43/006 , C09J2301/302 , C09J2301/416 , C09J2301/502 , C09J2301/408 , C09J2400/146 , C09J2433/00 , C09J2301/414 , B32B2310/0825
Abstract: The present invention is a method for peeling an adherend from a pressure-sensitive adhesive layer by irradiating a laminate in which the pressure-sensitive adhesive layer and the adherend are laminated with light, the peeling method includes a step of irradiating the pressure-sensitive adhesive layer with the light having a pulse width of 1 second or less and a light irradiation amount of 1,000 mJ/cm2 or more, and the pressure-sensitive adhesive layer satisfies predetermined conditions in terms of a minimum transmittance in a near-infrared region of a wavelength of 800 nm to 2,500 nm and a maximum transmittance in a visible light region of a wavelength of 380 nm to 780 nm.
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