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1953年Simpson等最早提出了某些非共轭双烯聚合时有环化现象。Marvel等曾对2,6-取代庚二烯-1,6的聚合进行研究,指出庚二烯-1,6在游离基引发下不易聚合,而2,6-取代庚二烯-1,6则可进行聚合,生成线型可溶的聚合体,鏈节中含有六元环结构。但是关于4-取代庚二烯—1,6的聚合研究,文献上从无报导。我们合成了二丙烯基丙二酸二乙酯(Ⅰ)、二丙烯基丙二酸二甲酯(Ⅱ)、二丙烯基氰基醋酸乙酯(Ⅲ)、二丙烯基醋酸乙酯(Ⅳ)及α,α′二氯代丙烯基丙二酸二乙酯(Ⅴ),并作了在过氧化苯甲酰(BPO)引发下的聚合研究。
In 1953, Simpson et al. First proposed the cyclization phenomenon in some non-conjugated diene polymerization. Marvel et al. Have studied the polymerization of 2,6-substituted heptadiene-1,6, indicating that heptadiene-1,6 is not easily polymerizable by free-radical initiation whereas 2,6-substituted heptadiene-1,6 The polymerization can be carried out to form a linear soluble polymer which contains a six-membered ring structure. However, no literature has been reported on the polymerization of 4-substituted heptadiene-1,6. We synthesized diethyl diacrylate (Ⅰ), dimethyl diacrylate (Ⅱ), ethyl diacrylate (Ⅲ), ethyl diacrylate (Ⅳ) And α, α ’dichloro-propenylmalonate (Ⅴ) were synthesized and polymerized under benzoylperoxide (BPO).