- Patent Title: Polymerizable composition for optical material, polymerizable prepolymer composition for optical material, cured product, and method of producing optical material
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Application No.: US17431360Application Date: 2021-01-27
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Publication No.: US11542357B2Publication Date: 2023-01-03
- Inventor: Kouji Suesugi , Shinsuke Ito , Shotaro Nakano , Yusuke Matsui
- Applicant: MITSUI CHEMICALS, INC.
- Applicant Address: JP Tokyo
- Assignee: MITSUI CHEMICALS, INC.
- Current Assignee: MITSUI CHEMICALS, INC.
- Current Assignee Address: JP Tokyo
- Agency: Buchanan, Ingersoll & Rooney PC
- Priority: JPJP2020-011127 20200127,JPJP2020-194660 20201124
- International Application: PCT/JP2021/002900 WO 20210127
- International Announcement: WO2021/153632 WO 20210805
- Main IPC: C08G18/10
- IPC: C08G18/10 ; C08G18/18 ; C08G18/24 ; C08G18/76 ; G02B1/04
Abstract:
A polymerizable composition for an optical material containing two or more different monomers for an optical material, and a polymerization catalyst, in which at least one of the two or more different monomers for an optical material is an isocyanate compound containing no aromatic rings, a content of the polymerization catalyst with respect to a total of 100 parts by mass of the two or more different monomers for an optical material is from more than 0.05 parts by mass to 2.0 parts by mass, and a viscosity measured by a B-type viscometer at 25° C. and 60 rpm is from 10 mPa·s to 1,000 mPa·s.
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