POLYCARBONATE RESIN, METHOD FOR PRODUCING THE SAME AND OPTICAL MOLDING

PROBLEM TO BE SOLVED: To provide a polycarbonate resin that can achieve an optical molding with a high refractive index and excellent transparency.SOLUTION: A polycarbonate resin contains a 9,9-bis(4-hydroxyphenyl) fluorene skeleton and a constitutional unit (B) represented by formula (B) (R-Rindepe...

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1. Verfasser: TOTANI YOSHIYUKI
Format: Patent
Sprache:eng ; jpn
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Zusammenfassung:PROBLEM TO BE SOLVED: To provide a polycarbonate resin that can achieve an optical molding with a high refractive index and excellent transparency.SOLUTION: A polycarbonate resin contains a 9,9-bis(4-hydroxyphenyl) fluorene skeleton and a constitutional unit (B) represented by formula (B) (R-Rindependently represent a halogen atom, a C6-20 aryl group, a C1-20 alkyl group or a C5-20 cycloalkyl group; Xs independently represent a C2-10 alkylene group; W is -S-, -SO- or -SO-; n and m independently represent an integer of 0-6, where, n+m≠0).SELECTED DRAWING: None 【課題】高屈折率で、かつ、透明性に優れた光学成形体を実現できるポリカーボネート樹脂を提供する。【解決手段】9,9−ビス(4−ヒドロキシフェニル)フルオレン骨格と式(B)で表される構成単位(B)とを有するポリカーボネート樹脂。(R5〜R12は夫々独立に、ハロゲン原子、C6〜20のアリール基、C1〜20のアルキル基又はC5〜20のシクロアルキル基;Xは夫々独立にC2〜10のアルキレン基;Wは−S−、−SO−又は−SO2−;n及びmは夫々独立に0〜6の整数、ただし、n+m≠0)【選択図】なし