公开(公告)号：US20230378487A1

公开(公告)日：2023-11-23

申请号：US18248275

申请日：2021-09-08

Applicant: THREEBOND CO., LTD.

Inventor： Nao SUZUKI ,  Kazuyuki UENO ,  Yoshihide ARAI ,  Masayuki TANAKA

IPC: H01M8/0284 ,  H01M8/1004

CPC classification number: H01M8/0284 ,  H01M8/1004 ,  H01M2008/1095

Abstract: One embodiment of the present invention aims to provide a photocurable sheet-shaped sealing agent having adherence to an electrolyte membrane and a hydrogen gas barrier. A photocurable sheet-shaped sealing agent for fuel cell, comprising a component (A): urethane (meth)acrylate, a component (B): a phenoxy resin, and a component (C): a photopolymerization initiator.

公开(公告)号：US20240282983A1

公开(公告)日：2024-08-22

申请号：US18560838

申请日：2022-05-09

Applicant: ThreeBond Co., Ltd.

Inventor： Yoshihide ARAI ,  Masayuki TANAKA ,  Nao SUZUKI ,  Hajime KIBE ,  Keisuke MINODA ,  Takuma KADO

IPC: H01M8/0286 ,  F16J15/10 ,  H01M8/0284

CPC classification number: H01M8/0286 ,  F16J15/108 ,  H01M8/0284

Abstract: According to one embodiment, a gasket molding method for molding a gasket on a workpiece includes, in the order recited: an application step for applying an active energy ray curable liquid into a cavity of a molding die; a bonding step for bonding the molding die coated with the active energy ray curable liquid and the workpiece; a curing step for curing the applied active energy ray curable liquid by irradiation with an active energy ray; and a mold release step for pulling off the cured active energy ray curable liquid from the molding die together with the workpiece.

公开(公告)号：US20210355251A1

公开(公告)日：2021-11-18

申请号：US17241738

申请日：2021-04-27

Applicant: THREEBOND CO., LTD.

Inventor： Kazuyuki UENO ,  Yoshihide ARAI ,  Takashi NEMOTO

IPC: C08F2/50 ,  C08J5/18 ,  C08F290/06

Abstract: The present invention makes it possible to maintain a high 180-degree peel strength of a photocurable composition having a film shape at 25° C. in the state of not being cured against untreated PET as an adherend when bonding is performed by lamination at normal temperature.
A photocurable composition having a film shape at 25° C. in a state of not being cured, which contains the following components (A) to (C) and in which the photocurable composition contains 1 to 45 parts by mass of the component (B) with respect to 100 parts by mass of the component (A), a temperature of tan δ=1 is 30° C. to 60° C. before curing, a storage elastic modulus at 25° C. is 10.0×105 Pa or less after curing.
Component (A): urethane-modified (meth)acrylate oligomer
Component (B): film forming agent
Component (C): photoinitiator

公开(公告)号：US20210206959A1

公开(公告)日：2021-07-08

申请号：US17057099

申请日：2019-05-22

Applicant: THREEBOND CO., LTD.

Inventor： Kazuyuki UENO ,  Yoshihide ARAI ,  Takashi NEMOTO

IPC: C08L33/10

Abstract: The present invention provides a photocurable composition containing an ultraviolet absorber, which yields a cured material thereof having a high cutting capability against ultraviolet rays from the outside, a low yellow index, and colorlessness and transparency, both immediately after preparing the same and after a lapse of time of being left in a severe environment such as a high-temperature and high-humidity environment, an environment exposed to water or light, and the like. The present invention relates to a sheet-shaped photocurable composition including the following components (A) to (E): a component (A): a (meth)acrylate compound; a component (B): a film forming resin; a component (C): a photoinitiator; a component (D): a compound having a specific skeleton structure; a component (E): a compound having a specific group in the molecule.

公开(公告)号：US20210206888A1

公开(公告)日：2021-07-08

申请号：US17059020

申请日：2019-05-22

Applicant: THREEBOND CO., LTD.

Inventor： Kazuyuki UENO ,  Yoshihide ARAI ,  Takashi NEMOTO

IPC: C08F2/50 ,  C08G59/06 ,  C08F283/00 ,  C08K5/3475 ,  C08K5/5397 ,  C08F220/18

Abstract: The present invention provides a photocurable composition containing an ultraviolet absorber, which has high photocurability and yields a cured material having a high cutting capacity against ultraviolet rays from the outside, a low yellow index, and colorlessness and transparency. The present invention relates to a sheet-shaped photocurable composition which includes the following components (A) to (D), and when a cured material obtained after photocuring the photocurable composition has a thickness of 150 μm, a yellow index of the cured material is 4.0 or less and a light transmittance of the cured material at a wavelength of 385 nm is 5.0% or less: a component (A): a (meth)acrylate compound, a component (B): a film forming resin, a component (C): a photoinitiator, and a component (D): an ultraviolet absorber.

公开(公告)号：US20210070894A1

公开(公告)日：2021-03-11

申请号：US16642530

申请日：2018-08-31

Applicant: THREEBOND CO., LTD.

Inventor： Kazuyuki UENO ,  Yoshihide ARAI ,  Yoshiaki KOGA

IPC: C08F2/48 ,  C08K5/5397 ,  C08L57/10 ,  C08L67/07 ,  C08G64/04 ,  H01L51/00

Abstract: Conventionally, a photocurable composition to which an ultraviolet absorber is added is difficult to form a colorless and transparent cured resin because the ultraviolet absorber itself is colored, and thus the photocurable composition is hardly to be used in a display apparatus required for colorlessness and transparency. Provided is a photocurable composition including a specific compound, wherein a light transmittance of 385 nm is 50% or less and a yellowness index is 3.0 or less in a state in which a cured resin having a thickness of 200 μm or less is interposed between alkali free glass plates each having a thickness of 0.7 mm.