公开(公告)号：US20240158647A1

公开(公告)日：2024-05-16

申请号：US18279710

申请日：2022-03-08

Applicant: TOKUYAMA CORPORATION

Inventor： Taichi HANASAKI ,  Masayuki MIYAZAKI ,  Toshimitsu HIRAREN ,  Katsuhiro MORI ,  Junji MOMODA

IPC: C09D5/29 ,  C08F289/00 ,  C08K5/3435 ,  C09D5/00 ,  C09D7/20 ,  C09D7/47 ,  C09D7/63 ,  C09D151/08 ,  C09D175/04

CPC classification number: C09D5/29 ,  C08F289/00 ,  C08K5/3435 ,  C09D5/002 ,  C09D7/20 ,  C09D7/47 ,  C09D7/63 ,  C09D151/08 ,  C09D175/04 ,  G02C7/102

Abstract: The present invention provides: a photochromic curable composition for providing a cured product having excellent durability and appearance; and a cured product (photochromic laminate) having a particularly favorable appearance. A photochromic curable composition according to an embodiment includes: (A1) a first hindered amine compound having at least one reactive group selected from the group consisting of a radically polymerizable group and a group reactive with a radically polymerizable group; (B) a radically polymerizable monomer comprising a polyrotaxane component (B1) having a radically polymerizable group while not having a piperidyl group; and (C) a photochromic compound.

公开(公告)号：US20220056187A1

公开(公告)日：2022-02-24

申请号：US17413667

申请日：2019-12-17

Applicant: TOKUYAMA CORPORATION

Inventor： Taichi HANASAKI ,  Ayako OHARA ,  Junji TAKENAKA ,  Junji MOMODA

IPC: C08F290/14

Abstract: The present invention relates to a curable composition for an optical material, containing (A) 100 parts by mass of a radical polymerizable monomer, (B) 0.1 to 5 parts by mass of an ultraviolet absorber composed of a benzotriazole compound having a specific structure, which has a maximum absorption wavelength of 360 nm or more and less than 380 nm and an absolute value of the difference in solubility parameter (SP value) from the radical polymerizable monomer (A) of 5.5 (cal/cm3)1/2 or less, (C) 1 to 5 parts by mass of an ultraviolet absorber which is at least one selected from a benzotriazole compound, a benzophenone compound and a triazine compound and has a maximum absorption wavelength of less than 360 nm, and (D) 0.05 to 0.5 parts by mass of a radical polymerization initiator. According to the present invention, it is possible to provide a curable composition for an optical material which has an ability to cut ultraviolet rays and blue light and can be suitably used as a coating material having good storage stability and weather resistance.

公开(公告)号：US20240182749A1

公开(公告)日：2024-06-06

申请号：US18278324

申请日：2022-03-08

Applicant: TOKUYAMA CORPORATION

Inventor： Taichi HANASAKI ,  Masayuki MIYAZAKI ,  Toshimitsu HIRAREN ,  Katsuhiro MORI ,  Junji MOMODA

IPC: C09D183/10 ,  C08F290/14 ,  C09D7/63 ,  C09K9/02 ,  G02B1/04 ,  G02B5/23

CPC classification number: C09D183/10 ,  C08F290/148 ,  C09D7/63 ,  C09K9/02 ,  G02B1/04 ,  G02B5/23

Abstract: The present invention provides a photochromic curable composition capable of providing a cured product excellent in appearance, a photochromic optical article including the cured product, and a method for producing the same. According to an embodiment, there is provided a photochromic curable composition including (A) a siloxane having an acyclic polysiloxane bond and at least one of a radically polymerizable group and a group reactive with a radically polymerizable group, (B) a radically polymerizable monomer component, and (C) a photochromic compound.

公开(公告)号：US20220056170A1

公开(公告)日：2022-02-24

申请号：US17413841

申请日：2019-12-17

Applicant: TOKUYAMA CORPORATION

Inventor： Ayako OHARA ,  Taichi HANASAKI ,  Junji TAKENAKA ,  Junji MOMODA

IPC: C08F20/14 ,  C08F2/50 ,  C08K5/3475 ,  C08L75/06 ,  G02B1/04

Abstract: The present invention is an optical material composition containing (A) 100 parts by mass of a polymerizable monomer, and (B) 0.001 to 0.3 parts by mass of a UV absorbent having a maximum absorption wavelength of 360 nm or more and less than 380 nm and having a specific structure, and an optical material formed of the composition. According to the present invention, there can be provided an optical material composition containing a UV absorbent and having good long-term storage stability, and an optical material formed of the composition, in particular, an optical material composition capable of forming a plastic lens having a high blue light cut rate.

公开(公告)号：US20200231840A1

公开(公告)日：2020-07-23

申请号：US16621388

申请日：2018-06-11

Applicant: Tokuyama Corporation

Inventor： Junji MOMODA ,  Shinobu IZUMI ,  Taichi HANASAKI

IPC: C09D175/04 ,  C09D7/63 ,  C09D5/32 ,  C08G18/12 ,  C08G18/48 ,  C08G18/32 ,  C08G18/66 ,  C08G18/76 ,  G02B1/04 ,  G02B1/14

Abstract: A primer composition for optical articles includes (A) a urethane prepolymer which is a reaction product of an aromatic polyisocyanate compound and a polyol compound, and which has a reactive group at an end, the reactive group being selected from among an isocyanate group and a hydroxyl group, (B) a light absorbing compound which has a maximum absorption wavelength within the range of from 320 nm to 650 nm (inclusive) and (C) an organic solvent which has a solubility parameter of 8 (cal/cm3)1/2 or more, while containing no active hydrogen.