公开(公告)号：US20200172681A1

公开(公告)日：2020-06-04

申请号：US16621634

申请日：2018-06-18

Applicant: TOKUYAMA CORPORATION

Inventor： Junji TAKENAKA ,  Junji MOMODA ,  Takayoshi KAWASAKI ,  Takao NOGUCHI ,  Yasutomo SHIMIZU ,  Masayuki MIYAZAKI

IPC: C08G83/00 ,  G02C7/10 ,  G02B5/23

Abstract: A photochromic polyrotaxane compound which comprises an axial molecule and a plurality of cyclic molecules clathrating the axial molecule, wherein at least one side chain containing a photochromic moiety is bonded to at least one of the cyclic molecules, and a curable composition comprising the photochromic polyrotaxane compound and a polymerizable 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.

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：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：US20180267207A1

公开(公告)日：2018-09-20

申请号：US15532887

申请日：2016-01-28

Applicant: TOKUYAMA CORPORATION

Inventor： Junji TAKENAKA ,  Junji MOMODA ,  Yoshihiro ASAHARA ,  Takashi TAMUKAI

IPC: G02B1/04 ,  B29C45/14 ,  G02C7/10 ,  G02C7/06

CPC classification number: G02B1/041 ,  B29C45/14336 ,  B29D11/00865 ,  B29K2105/0061 ,  B29L2011/0016 ,  G02C7/06 ,  G02C7/102

Abstract: A cured coating layer can be provided to plastic lenses having various shapes with high productivity without causing deformation by providing a plastic lens for light exposure having an uncured coating layer composed of a photocurable composition on one surface and hydrogel adhered to the other surface, curing the uncured coating layer by exposing the uncured coating layer to light, and removing the hydrogel.

公开(公告)号：US20160002524A1

公开(公告)日：2016-01-07

申请号：US14770181

申请日：2014-02-26

Applicant: TOKUYAMA CORPORATION

Inventor： Yasutomo SHIMIZU ,  Junji TAKENAKA ,  Junji MOMODA ,  Katsuhiro MORI

IPC: C09K9/02 ,  G02C7/10 ,  G02B5/22 ,  G02B1/10 ,  G02B5/23

CPC classification number: C09K9/02 ,  C08F2/50 ,  C08F220/28 ,  C08F290/061 ,  C09K2211/1088 ,  C09K2211/1425 ,  G02B1/10 ,  G02B5/223 ,  G02B5/23 ,  G02C7/102

Abstract: A curable composition which comprises a carbonate-based polymerizable monomer represented by the following formula, other polymerizable monomers and a photochromic compound, can be used even under high-temperature and high-humidity conditions without any problems and provides a cured product having excellent photochromic properties. wherein A and A′ are each a linear or branched alkylene group having 2 to 15 carbon atoms, “a” is an average value of 1 to 20, when there are a plurality of A's, A's may be the same or different, R1 is a hydrogen atom or methyl group, and R2 is a (meth)acryloyloxy group or hydroxyl group.

Abstract translation: 即使在高温高湿条件下也可以使用包含下式表示的碳酸酯系聚合性单体的固化性组合物，其它的可聚合单体和光致变色化合物，并且提供具有优异的光致变色特性的固化物 。 其中A和A'各自为具有2至15个碳原子的直链或支链亚烷基，“a”为1至20的平均值，当存在​​多个A时，A可以相同或不同，R 1为 氢原子或甲基，R2为（甲基）丙烯酰氧基或羟基。

公开(公告)号：US20210032532A1

公开(公告)日：2021-02-04

申请号：US17047659

申请日：2019-04-15

Applicant: TOKUYAMA CORPORATION

Inventor： Masayuki MIYAZAKI ,  Junji TAKENAKA

IPC: C09K9/02 ,  C08G65/332 ,  C08G77/14 ,  C08L83/06 ,  C08G18/72 ,  C08K5/1545

Abstract: The invention is a photochromic compound having an indenonaphthopyran skeleton, and the indenonaphthopyran skeleton has an alkenyl group having 10 to 30 carbon atoms, and an oligomer chain group A having 3 or more recurring units selected from a polyalkylene oxide oligomer chain group, a polyester oligomer chain group, a polysiloxane chain group and a polyester polyether oligomer chain group. The invention can provide a photochromic compound capable of expressing excellent photochromic characteristics in various cured products and capable of preventing cured products from becoming cloudy.

公开(公告)号：US20210003867A1

公开(公告)日：2021-01-07

申请号：US16982725

申请日：2019-03-19

Applicant: TOKUYAMA CORPORATION

Inventor： Junji TAKENAKA ,  Junji MOMODA ,  Yoshihiro ASAHARA ,  Takashi TAMUKAI

IPC: G02C7/10 ,  G02B1/04 ,  G02B1/10 ,  B05D3/06 ,  B05D5/06

Abstract: A method of producing a plastic lens having a cured coating layer, comprising the steps of: forming an uncured coating layer from a photocurable coating composition comprising at least a) a photochromic compound, b) a radically polymerizable monomer and c) a photopolymerization initiator on one surface of a plastic lens; and irradiating the plastic lens having the uncured coating layer with light from an LED having an emission peak wavelength of 350 nm or more to less than 450 nm from above the outer surface of the uncured coating layer to cure the uncured coating layer.

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：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.