Under certain conditions, epoxy-methyl fatty acid ester can realize the active quantitative polymerization without termination

Under certain conditions, epoxy-methyl fatty acid ester can realize non-terminating active quantitative polymerization, that is, all active centers in the reaction system start chain growth simultaneously, without chain termination, chain transfer and other reactions, and the active centers remain active for a long time, which is an obvious advantage of epoxy-methyl fatty acid ester over other conventional polymerization. Epoxy fatty acid methyl ester is currently is the effective means to realize design synthetic polymer materials, such as extremely narrow molecular weight distribution of polymers can be obtained. In theory, with electron-withdrawing substituent of monomer for epoxy fatty acid methyl ester, but at present the main is some conjugate olefine hydrocarbon can design the polymer was achieved by epoxy fatty acid methyl ester synthesis. The initiator of epoxy fatty acid methyl ester is mainly Lewis base, such as organic alkali metal compound. Epoxy fatty acid methyl ester mostly adopts solution polymerization, the solvent is alkanes, aromatics commonly. Because the active center is easy to react with live hydrogen, the reaction components are required to be highly mechanized, completely isolated and remove air, water and other impurities, and the active center exists in the form of a variety of ion balance, so there are many influencing factors and the process is complex.