Invention Grant
- Patent Title: Polycarbonate and molded article
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Application No.: US17040369Application Date: 2019-03-08
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Publication No.: US11306180B2Publication Date: 2022-04-19
- Inventor: Munenori Shiratake , Kentaro Ishihara , Koji Hirose , Shinya Ikeda , Noriyuki Kato , Mitsuteru Kondo , Shoko Suzuki , Kensuke Oshima , Shuya Nagayama , Masahiro Kanda
- Applicant: MITSUBISHI GAS CHEMICAL COMPANY, INC.
- Applicant Address: JP Tokyo
- Assignee: MITSUBISHI GAS CHEMICAL COMPANY, INC.
- Current Assignee: MITSUBISHI GAS CHEMICAL COMPANY, INC.
- Current Assignee Address: JP Tokyo
- Agency: Greenblum & Bernstein, P.L.C
- Priority: JPJP2018-061369 20180328
- International Application: PCT/JP2019/009298 WO 20190308
- International Announcement: WO2019/188114 WO 20191003
- Main IPC: C08G64/02
- IPC: C08G64/02 ; C08G64/16 ; C08G64/30 ; G02B1/04

Abstract:
Provided are a polycarbonate having an appropriate refractive index and an appropriate Abbe number, and comprehensively excelling in heat resistance, total light transmittance, and hue, and a molded article thereof. The polycarbonate includes a constituent unit represented by Formula [I] and a constituent unit having a hydrocarbon group containing a cyclic structure. In Formula [I], R1 and R2 each independently denote a hydrocarbon group, and each R3 independently denotes a hydrogen atom, a heteroatom-containing group, a halogen atom-containing group, a linear alkyl group having from 1 to 6 carbon atoms, a branched alkyl group having from 3 to 6 carbon atoms, or a group including an aryl group and having from 6 to 12 carbon atoms.
Public/Granted literature
- US20210054143A1 POLYCARBONATE AND MOLDED ARTICLE Public/Granted day:2021-02-25
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