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公开(公告)号：US20210155830A1
公开(公告)日：2021-05-27
申请号：US17045384
申请日：2019-04-04
Applicant: TOKUYAMA CORPORATION
Inventor： Toshimitsu HIRAREN , Katsuhiro MORI , Junji MOMODA
Abstract: The present invention includes: a photochromic adhesive composition containing (A) a photochromic compound having, as a substituent, a molecular chain having a molecular weight of 300 or more, and (B) an adhesive urethane (urea) resin, and having a softening point of 140 to 220° C., and a photochromic laminate using the adhesive composition. The invention provides the photochromic adhesive composition that functions as an adhesive layer for bonding optical sheets, and the photochromic laminate using the composition exhibits excellent photochromic characteristics, adhesiveness and workability
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公开(公告)号：US20210070790A1
公开(公告)日：2021-03-11
申请号：US16980466
申请日：2019-03-14
Applicant: TOKUYAMA CORPORATION
Inventor： Takayoshi KAWASAKI , Junji MOMODA , Tomohiro KAWAMURA , Mayumi KISHI , Michihito NAKATANI
IPC: C07F9/94 , C08F220/06 , C08F212/08
Abstract: A bismuth compound which is little toxic, insoluble in a monomer, usable for optical purpose and used as a substitute for a lead compound, in which a phosphoric acid ester having a (meth)acrylic group(s) is bonded to bismuth, and a method of producing the bismuth compound by reacting bismuth (meth)acrylate or bismuth subsalicylate with a phosphoric acid ester having a (meth)acrylic group(s) and carrying out dehydration.
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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
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.
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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
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.
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公开(公告)号：US20190263961A1
公开(公告)日：2019-08-29
申请号：US16344599
申请日：2017-11-16
Applicant: TOKUYAMA CORPORATION
Inventor： Yasutomo SHIMIZU , Takayoshi KAWASAKI , Junji MOMODA , Mitsuki TOCHI
Abstract: To provide a urethane resin for sliding members which has high abrasion resistance and is considered that crosslinking points are uniformly dispersed so that molecular motion is suitably possible. Particularly, to provide the urethane resin can be advantageously used as a polishing pad.There is provided the urethane resin for polishing is obtained by polymerizing a polymerizable composition comprising (A) a polyrotaxane having a composite molecular structure formed by an axial molecule and a plurality of cyclic molecules clathrating the axial molecule and side chains having an active hydrogen group introduced into at least some of the cyclic molecules and (B) a polyiso(thio)cyanate compound.
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Patent Agency Ranking
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.
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公开(公告)号：US20240209254A1
公开(公告)日：2024-06-27
申请号：US18286646
申请日：2022-03-30
Applicant: TOKUYAMA CORPORATION
Inventor： Yuki HATTORI , Katsuhiro MORI , Junji MOMODA
CPC classification number: C09K9/02 , G02C7/102 , G02C7/12 , C09K2211/1018
Abstract: The optical article of the invention contains a photochromic compound, and a first compound having an absorption peak in a wavelength range of 550 to 600 nm, has a laminate structure in which (A) a first functional layer containing at least a photochromic compound and (B) a lens substrate independently exist, has a luminous transmittance of 30% or more in the state with no photochromic compound coloration, has a luminous transmittance of 25% or less in the state with photochromic compound coloration, and has a minimum transmittance of 0.1 to 20% in a wavelength range of 550 to 600 nm, in a state with photochromic compound coloration. According to the invention, there is provided a novel photochromic optical article exhibiting excellent photochromic properties, visibility and anti-glare properties, and further having a high contrast (red, green and blue can be clearly differentiated and the outline and protrusions/recesses of objects are clear).
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公开(公告)号：US20230286912A1
公开(公告)日：2023-09-14
申请号：US17927852
申请日：2021-05-25
Applicant: TOKUYAMA CORPORATION
Inventor： Takao NOGUCHI , Katsuhiro MORI , Junji MOMODA
IPC: C07C323/52 , C09K9/02 , C09D175/08 , C08J7/04 , C08G18/38 , C08G65/334 , C09J175/08
CPC classification number: C07C323/52 , C08G18/3868 , C08G65/3344 , C08J7/04 , C09D175/08 , C09J175/08 , C09K9/02 , C08J2375/08 , C08J2475/08 , C09K2211/1018 , G02B5/23
Abstract: The present invention provides a novel compound for optical materials, and a curable composition, a cured body and an optical article containing the compound for optical materials. According to an embodiment, there is provided a compound for optical materials represented by Formula (Ia) below:
In Formula (Ia), X1 and X2 are each NH, S, or O. R1 is a 1- to 30-valent organic residue. R3 is a group composed of a polymer having a repeating unit selected from the group consisting of —(CH2)mO—, —(CH2CH2O)—, —(CH(CH3)CH2O)—, —(CH2CH(CH3)O)—, — (C(═O)—CH2CH2CH2CH2CH2O)—, —(C(═O)—O—CH2CH2CH2CH2CH2O)—, and —(C(═O)—O—CH2CH2CH2CH2CH2CH2O)—, a random copolymer having at least two repeating units selected from the group, or a block copolymer having at least two repeating units selected from the group.-
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.
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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
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.
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