公开(公告)号：US20180321588A1

公开(公告)日：2018-11-08

申请号：US15772641

申请日：2016-11-10

Applicant: TOKUYAMA CORPORATION

Inventor： Masayuki MIYAZAKI ,  Junji MOMODA ,  Junji TAKENAKA ,  Takashi TAMUKAI

IPC: G03F7/033 ,  C08F226/02 ,  C08F2/48 ,  C08L33/12

CPC classification number: G03F7/033 ,  B32B27/30 ,  C08F2/48 ,  C08F220/28 ,  C08F226/02 ,  C08K5/3435 ,  C08L33/12

Abstract: To provide a photocurable resin composition comprising an N-vinyl amide compound, a polyfunctional (meth)acrylate monomer and a photopolymerization initiator and having excellent adhesion to an optical substrate and free from an appearance defect such as a crack or shrinkage and a laminate having a coat layer obtained by curing the photocurable resin composition.

公开(公告)号：US20250122163A1

公开(公告)日：2025-04-17

申请号：US18729281

申请日：2023-01-06

Applicant: TOKUYAMA CORPORATION

Inventor： Masayuki MIYAZAKI ,  Srinivas VENU ,  Katsuhiro MORI

IPC: C07D311/94 ,  C07D513/04 ,  G02C7/10

Abstract: The purpose of the present invention is to provide: a photochromic compound that has excellent temperature dependence, decoloration speed, and durability; a naphthol derivative that can be an intermediate of the photochromic compound; a naphthol derivative that can be an intermediate of the photochromic compound; a curable composition that contains the photochromic compound; an optical article; a lens; and eyeglasses. An embodiment of the present invention provides a photochromic compound having a skeleton represented by formula (1). In formula (1), M is C, Si, or Ge. R1 is a group represented by formula (2). R2 is an alkyl group that may contain a halogen atom in a substituent, or a group represented by formula (2).

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：US20230242808A1

公开(公告)日：2023-08-03

申请号：US17768762

申请日：2020-10-14

Applicant: TOKUYAMA CORPORATION

Inventor： Masayuki MIYAZAKI ,  Junji TAKENAKA ,  Srinivas VENU ,  Junji MOMODA ,  Katsuhiro MORI

IPC: C09K9/02 ,  C09D4/06 ,  C09D7/63 ,  C07D497/10 ,  C07D311/96 ,  C07F7/08 ,  G02B1/04 ,  G02B1/10 ,  G02B5/23

CPC classification number: C09K9/02 ,  C09D4/06 ,  C09D7/63 ,  C07D497/10 ,  C07D311/96 ,  C07F7/0812 ,  G02B1/041 ,  G02B1/10 ,  G02B5/23 ,  C09K2211/1018 ,  C08K5/46

Abstract: A photochromic compound of the present invention comprises at least two monovalent photochromic basic structure groups PC including a T-type photochromic moiety, the photochromic basic structure groups being bonded to an organic group having a non-SO aromatic ring containing neither a sulfur atom nor an oxygen atom.