精密重合・精密合成高分子 II  ビナフチル構造を有する環状炭酸エステルの合成と重合

書誌事項

タイトル別名
  • Precision Polymerization and Polymers II. Synthesis and Polymerization of Cyclic Carbonates Containing a Binaphthyl Moiety.
  • ビナフチル コウゾウ オ ユウスル カンジョウ タンサン エステル ノ ゴウセ

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抄録

Synthesis and anionic ring-opening polymerization of aromatic cyclic carbonates were investigated. Detailed studies with 2, 2′-biphenol and 1, 1′-bi (2-naphthol) as diols showed that the synthesis with 2 mol of p-nitrophenyl chloroformate and 2 mol of a tertiary amine afforded the best results (yields of the corresponding cyclic carbonates 3 and 5 were ca. 80%). Preparation using phosgene dimer resulted in good yield of 3 but was not suitable for 5. Stability of 5 was low enough to react with methanol only by mixing to give an adduct readily. High ring-opening ability of 5 based on its strained ring was suggested from the structure simulation of 3 and 5. Anionic ring-opening polymerization of 5 initiated with t-BuOK and the related alkalis proceeded smoothly to give a polycarbonate quantitatively (Mnca. 15000). This polymer could also be obtained by polycondensation using 1, 1′-bi (2-naphthol) and bis (4-nitrophenyl) carbonate. Thermal analysis, powder X-ray analysis, and volume change on polymerization were studied.

収録刊行物

  • 高分子論文集

    高分子論文集 54 (12), 974-981, 1997

    公益社団法人 高分子学会

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