Polycarbonate and molded article

US11306180B2 · kind B2 · utility

Assignee

• Mitsubishi Gas Chemical Company, Inc. · JP

Inventors

• Munenori Shiratake · Tokyo, JP
• Kentaro Ishihara · Tokyo, JP
• Koji Hirose · Tokyo, JP
• Shinya Ikeda · Tokyo, JP
• Noriyuki Kato · Nara, JP
• Mitsuteru Kondo · Tokyo, JP
• Shoko SUZUKI · Tokyo, JP
• Kensuke Oshima · Tokyo, JP
• Shuya Nagayama · Nagasaki, JP
• Masahiro Kanda · Shizuoka, JP

Key dates

• Filing date: Mar 8, 2019
• Grant date: Apr 19, 2022
• Expiry date: Mar 28, 2039

Classification

• Technology area (CPC G): Physics
• CPC primary: G02B1/041
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

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.