Invention Grant
- Patent Title: Photochromic compound, curable composition containing said photochromic compound, and optical article
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Application No.: US17047659Application Date: 2019-04-15
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Publication No.: US11879097B2Publication Date: 2024-01-23
- Inventor: Masayuki Miyazaki , Junji Takenaka
- Applicant: TOKUYAMA CORPORATION
- Applicant Address: JP Shunan
- Assignee: TOKUYAMA CORPORATION
- Current Assignee: TOKUYAMA CORPORATION
- Current Assignee Address: JP Shunan
- Agency: Birch, Stewart, Kolasch & Birch, LLP
- Priority: JP 18079303 2018.04.17 JP 18079468 2018.04.17
- International Application: PCT/JP2019/016230 2019.04.15
- International Announcement: WO2019/203205A 2019.10.24
- Date entered country: 2020-10-14
- Main IPC: C09K9/02
- IPC: C09K9/02 ; C08G18/72 ; C08L83/06 ; C08G65/332 ; C08G77/14 ; 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.
Public/Granted literature
- US20210032532A1 PHOTOCHROMIC COMPOUND, CURABLE COMPOSITION CONTAINING SAID PHOTOCHROMIC COMPOUND, AND OPTICAL ARTICLE Public/Granted day:2021-02-04
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