COPOLYCARBONATE

• Main Authors: MOTOYOSHI TETSUYA, YAMANAKA KATSUHIRO, IMAZATO KENTA
• Format: Patent
• Language: English; Japanese
• Published: 12.01.2017
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP

PROBLEM TO BE SOLVED: To provide a copolycarbonate having a low absorption coefficient and excellent heat resistance, low temperature characteristics and surface hardness.SOLUTION: There is provided a copolycarbonate (3) containing a unit (A) having a main recurring unit represented by isosorbide and a unit (B) represented by the following formula, the molar ratio of the unit (A) and a unit (B3), (A/B3) being 40/60 to 99/1. The unit (B3) is a single unit constituting a block.SELECTED DRAWING: None 【課題】吸水率が低く、耐熱性、低温特性、表面硬度に優れたコポリカーボネートの提供。【解決手段】主たる繰り返し単位がイソソルビドで代表される単位（Ａ）および下記式で表される単位（Ｂ３）を含み、単位（Ａ）と単位（Ｂ３ｎ＝１）とのモル比（Ａ／Ｂ３ｎ＝１）が４０／６０〜９９／１であるコポリカーボネート（３）である。但し、単位（Ｂ３ｎ＝１）はブロックを構成する１つの単位である。【選択図】なし