不飽和二塩基酸誘導体の合成と重合　ＸＸＩ　　Ｎ‐置換イソマレイミドのラジカル重合・共重合

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タイトル別名
  • Radical Homopolymerization and Copolymerization Behaviors of <I>N</I>-Substituted Isomaleimides
  • N チカン イソマレイミド ノ ラジカル ジュウゴウ キョウジュウゴウ フホウ

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The radical homopolymerization and copolymerization behaviors of eight N-substituted isomaleimides (RIMI) have been studied. The polymerizations of RIMI proceed slowly to yield low melecular weight polymers, and influence of N-substituents on over-all polymerization rate was observed. The copolymerizations of RIMI (M2) with styrene (M1), methyl acrylate (M1), and vinyl acetate (M1) were carried out at 70°C in dioxane. The relative reactivities (1/r1) of RIMI toward a polystyryl and a poly-(methyl acrylate) radical were correlated with the polar substituent constants (σ*) of alkyl groups in RIMI in Taft's equation; log (1/r1) =ρ*σ*+δEs, being independent of the steric substituent (δ=0). The ρ* values obtained for styrene-RIMI and methyl acrylate-RIMI systems were 0.9 and 0.4, respectively. The Q and e-values for RIMI obtained from its copolymerization with styrene were also correlated with Taft's σ* constants. The Q and e-values for RIMI increase with increasing σ* values. In the copolymerizations of RIMI with vinyl acetate, alternating copolymers of low molecular weights were obtained.

収録刊行物

  • 高分子論文集

    高分子論文集 34 (12), 857-865, 1977

    公益社団法人 高分子学会

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