6533b871fe1ef96bd12d220f

RESEARCH PRODUCT

Über die copolymerisation des acroleins und des methacroleins in homogener lösung. Polymere acroleine. 25. Mitt.

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Die Copolymerisation des Acroleins und des Methacroleins in Dimethylformamid sowie in Dioxan wird beschrieben. Die Parameter folgender Systeme wurden bestimmt: Acrolein/Acrylnitril (r1 = 1,60; r2 = 0,52); Acrolein/Acrylamid (r1 = 1,69; r2 = 0,21); Acrolein/Methacrylnitril (r1 = 0,72; r2 = 1,20); Acrolein/2-Vinylpyridin (r1 = 4; r2 = 0) und Methacrolein/Methacrylnitril (r1 = 1,78; r2 = 0,40). Die Berechnung der Q-und e-Werte bzw. der q- und ϵ-Werte ergab fur Acrolein: Q = 0,64; e = 0,61; q = -2,8 kcal/Mol; ϵ = 0,19 = 10−10 elektrostatische Einheiten und fur Methacrolein: Q = 1,59; e = 0,36; q = −3,4 kcal/Mol; ϵ = 0,11 = 10−10 elektrostatische Einheiten. The copolymerisation of acrolein and methacrolein in dimethylformamide or dioxane was investigated. The reactivity ratios of the following systems are determinated: acrolein/acrylonitril (r1 = 1.60; r2 = 0.52); acrolein/acrylamide (r1 = 1.69; r2 = 0.21); acrolein/methacrylonitril (r1 = 0.72; r2 = 1.20); acrolein/2-vinylpyridine (r1 ≈ 4; r2 ≈ 0) and methacrolein/methacrylonitril (r1 = 1.78; r2 = 0.40). Calculation of the Q- and e-values and of the q- and ϵ-values rsp. yields for acrolein: Q = 0.64; e = 0.61; q = −2.8 kcal/Mol; ϵ = 0.19 = 10−10 e.s.u. and for methacrolein: Q = 1.59; e = 0.36; q = −3.4 kcal/Mol; ϵ = 0.11 = 10−10 e.s.u.