公开(公告)号：US20210002545A1

公开(公告)日：2021-01-07

申请号：US16982735

申请日：2019-03-22

Applicant: TOKUYAMA CORPORATION

Inventor： Ayako OHARA ,  Junji TAKENAKA ,  Junji MOMODA

IPC: C09K9/02 ,  C08F222/10 ,  C08K5/357 ,  C08K5/378 ,  C08K5/46 ,  G02B1/14 ,  G02B5/23

Abstract: A photochromic curable composition comprising a radically polymerizable monomer having at least one oxetanyl group in one molecule, a photochromic compound and radically polymerizable monomers other than the above polymerizable monomer, and a photochromic cured body obtained by polymerizing the photochromic curable composition.

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：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.