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：US20210292641A1

公开(公告)日：2021-09-23

申请号：US17258375

申请日：2019-07-18

Applicant: TOKUYAMA CORPORATION

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

IPC: C09K9/02 ,  C08G65/333

Abstract: The present invention relates to a photochromic compound including a polyvalent residue on which at least one group having a photochromic moiety is substituted, and at least one long-chain group not containing a photochromic moiety and having a molecular weight of 300 or more is further substituted; and a curable composition containing the same. In accordance with the present invention, it is possible to provide a photochromic compound which has high solubility in a polymerizable compound serving as a matrix while retaining high photochromic characteristics and is hardly affected by the matrix; and a curable composition containing the same.

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：US20240100810A1

公开(公告)日：2024-03-28

申请号：US18271925

申请日：2022-01-12

Applicant: TOKUYAMA CORPORATION

Inventor： Takao NOGUCHI ,  Katsuhiro MORI ,  Junji MOMODA

IPC: B32B27/06 ,  B32B27/40 ,  C08L75/08

CPC classification number: B32B27/06 ,  B32B27/40 ,  C08L75/08 ,  B32B2250/02 ,  B32B2307/42 ,  B32B2375/00 ,  B32B2551/00

Abstract: The present invention aims to provide a resin composition having excellent photochromic properties and mechanical properties.
The present invention relates to a resin composition containing (i) a urethane-based resin having a propylene glycol chain in a molecular chain thereof and (ii) a photochromic compound, wherein the intensity ratio of PMIpst to PMIcp (PMIpst/PMIcp) is 8.0 or more and 40.0 or less when PMIpst indicates the total spectral intensity of 16 ppm or more and 20 ppm or less including the spectral intensity of a carbon atom of a methyl group in the propylene glycol chain as measured by 13C-PST/MAS NMR and PMIcp indicates the total spectral intensity of 16 ppm or more and 20 ppm or less including the spectral intensity of the carbon atom of the methyl group in the propylene glycol chain as measured by 13C-CP/MAS NMR.

公开(公告)号：US20220162486A1

公开(公告)日：2022-05-26

申请号：US17599830

申请日：2020-04-03

Applicant: TOKUYAMA CORPORATION

Inventor： Katsuhiro MORI ,  Takao NOGUCHI ,  Junji MOMODA

IPC: C09J175/04 ,  C09K9/02 ,  C09J11/06 ,  C08G18/75 ,  C08G18/38 ,  G02C7/10

Abstract: The present invention relates to a photochromic optical article including a pair of optical article plates bonded together through an adhesive layer containing a photochromic compound and at least one resin selected from a urethane resin, an epoxy resin, and an acrylic resin, wherein a deviation of the thickness of the adhesive layer on a concentric circle from the central point of the pair of optical article plates is within ±10%.
In accordance with the present invention, in the photochromic optical article formed of a pair of optical article plates bonded together through an adhesive layer, a photochromic optical article in which the thickness of the photochromic adhesive layer is prescribed, and which is free from problems, such as a lowering of the appearance quality, can be provided.