聚碳酸酯
双功能
选择性
碳酸盐
碳酸二苯酯
反应性(心理学)
聚合
高分子化学
催化作用
碳酸二甲酯
化学
产量(工程)
材料科学
化学工程
有机化学
聚合物
酯交换
复合材料
医学
替代医学
病理
工程类
作者
Hiroyuki Matsukizono,Takeshi Endo
摘要
ABSTRACT The synthesis of six‐membered cyclic carbonates from diols utilizing less toxic and easily‐handled diphenyl carbonate (DPC) is carried out based on the reactivity and selectivity at different conditions. Commercially‐available neopentylglycol (NPG) or di(trimethylolproapane) (DTMP) react effectively with DPC at 140°C and converted to their corresponding monofunctional NPG‐carbonate (NPGC) or bifunctional DTMPC‐carboante (DTMPC), respectively. The selectivity of these carbonates changes depending on a feed ratio of DPC and these diols. After a NPG/DPC mixture with the DPC/NPG feed ratio of 4 was heated at 140°C for 48 h, the NPGC is isolated with a yield of 74%. A 1,8‐diazabicyclo[5.4.0]undec‐7‐ene (DBU)‐catalyzed ring‐opening polymerization (ROP) of NPGC with DTMPC can form effectively networked structures. By only drying of THF solutions containing NPGC, DTMPC, and a catalytic amount of DBU at 60°C for 12 h, the ROP efficiently proceeds and networked polycarbonate films with well transparency and flexibility are easily obtained. © 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015 , 132 , 41956.
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