公开(公告)号：US09856347B2

公开(公告)日：2018-01-02

申请号：US15113399

申请日：2015-02-16

Applicant: DAICEL CORPORATION

Inventor： Hiroki Takenaka ,  Kyohei Ishida

IPC: C08G59/22 ,  C08G59/20 ,  G02B1/04 ,  C08L63/00 ,  G02B3/00

CPC classification number: C08G59/226 ,  C08G59/20 ,  C08L63/00 ,  G02B1/041 ,  G02B3/00 ,  C08L83/04

Abstract: Provided is a curable composition that is rapidly cured to form a cured product. The cured product resists yellowing, successfully maintains excellent transparency over a long time even in a high-temperature environment, and is advantageously usable as or in a wafer-level lens. The curable composition according to the present invention includes a cycloaliphatic epoxide (A), a siloxane compound (B), and a curing agent (C). The cycloaliphatic epoxide (A) is represented by Formula (1). The siloxane compound (B) contains two or more glycidyl groups per molecule. In the formula, X is selected from a single bond and a linkage group.

公开(公告)号：US10584200B2

公开(公告)日：2020-03-10

申请号：US15750797

申请日：2016-07-14

Applicant: DAICEL CORPORATION

Inventor： Takeshi Fujikawa ,  Kyohei Ishida

IPC: C08F2/46 ,  C08F2/50 ,  C08G61/04 ,  C08G59/24 ,  C08K5/134 ,  C08K5/20

Abstract: The present invention provides a curable composition excellent in curability and capable of forming, through light irradiation, a cured product excellent in light resistance, heat resistance, and transparency. The curable composition contains the following component (A), the following component (B), and the following component (C): the component (A): an alicyclic epoxy compound represented by the following formula (a): the component (B): a light resistance imparting agent having a maximum absorption wavelength in a region between 280 and 320 nm in an ultraviolet-visible light absorption spectrum from 250 to 400 nm; and the component (C): an optical cationic polymerization initiator: wherein R1 to R18 are the same as or different from one another and represent a hydrogen atom, a halogen atom, a hydrocarbon group that may contain an oxygen atom or a halogen atom, or an alkoxy group that may have a substituent; and X represents a single bond or a linking group.

公开(公告)号：US10829586B2

公开(公告)日：2020-11-10

申请号：US16715476

申请日：2019-12-16

Applicant: DAICEL CORPORATION

Inventor： Takeshi Fujikawa ,  Kyohei Ishida

IPC: C08F2/46 ,  C08F2/50 ,  C08G61/04 ,  C08G59/24 ,  C08K5/1515 ,  C08K5/375 ,  C08K5/3475 ,  C08K5/134 ,  C08K5/20

Abstract: The present invention provides a curable composition excellent in curability and capable of forming, through light irradiation, a cured product excellent in light resistance, heat resistance, and transparency. The curable composition contains the following component (A), the following component (B), and the following component (C): the component (A): an alicyclic epoxy compound represented by the following formula (a); the component (B): a light resistance imparting agent having a maximum absorption wavelength in a region between 280 and 320 nm in an ultraviolet-visible light absorption spectrum from 250 to 400 nm; and the component (C): an optical cationic polymerization initiator:

公开(公告)号：US10550219B2

公开(公告)日：2020-02-04

申请号：US15750797

申请日：2016-07-14

Applicant: DAICEL CORPORATION

Inventor： Takeshi Fujikawa ,  Kyohei Ishida

IPC: C08F2/46 ,  C08F2/50 ,  C08G61/04 ,  C08G59/24 ,  C08K5/134 ,  C08K5/20

Abstract: The present invention provides a curable composition excellent in curability and capable of forming, through light irradiation, a cured product excellent in light resistance, heat resistance, and transparency. The curable composition contains the following component (A), the following component (B), and the following component (C): the component (A): an alicyclic epoxy compound represented by the following formula (a): the component (B): a light resistance imparting agent having a maximum absorption wavelength in a region between 280 and 320 nm in an ultraviolet-visible light absorption spectrum from 250 to 400 nm; and the component (C): an optical cationic polymerization initiator: wherein R1 to R18 are the same as or different from one another and represent a hydrogen atom, a halogen atom, a hydrocarbon group that may contain an oxygen atom or a halogen atom, or an alkoxy group that may have a substituent; and X represents a single bond or a linking group.

公开(公告)号：US11718587B2

公开(公告)日：2023-08-08

申请号：US16648585

申请日：2018-09-26

Applicant: TOKYO OHKA KOGYO CO., LTD. ,  Daicel Corporation

Inventor： Kunihiro Noda ,  Hiroki Chisaka ,  Issei Suzuki ,  Jiro Hikida ,  Dai Shiota ,  Kieko Hanano ,  Kyohei Ishida ,  Tsutomu Watanabe ,  Kazuhiro Uehara

IPC: C07D233/60 ,  C07D233/58

CPC classification number: C07D233/60 ,  C07D233/58

Abstract: A novel compound suitable as an epoxy curing catalyst; an epoxy curing catalyst using the compound; and a method for producing the compound. A compound represented by formula (1) in which Xm+ represents an m valent counter cation, R1 represents an aromatic group which may have a substituent; R2 represents an alkylene group which may have a substituent; R3 represents a halogen atom, a hydroxyl group, a mercapto group, a sulfide group, a silyl group, a silanol group, a nitro group, a nitroso group, a sulfonic acid ester group, a phosphino group, a phosphinyl group, a phosphonic acid ester group or an organic group; m represents an integer of 1 or more; n represents an integer of 0-3; and R2 may bond with R1 to form a cyclic structure.