Abstract
ω-Alkenonic acids, methyl ω-alkenoates, and methyl ω-epoxyalkanoates of 3 to 11 carbon atoms with –(–CH2–)– spacer groups between the epoxy ring and the carboxyl group have been synthesized and are being characterized. The compounds which have 1, 2, 5 and 8 –(–CH2–)– groups were selected for more extensive studies including polymerization and copolymerization studies. With an aluminumalkyl–water initiator modified with acetylacetone (AlEt3–H2O–AcAc, 1:0.5:1), methyl ω-epoxyalkanoates have been polymerized to polymers of moderate to high molecular weight (for n=8, Mn=2.5×105, and copolymerized with such cyclic ethers as ethylene oxide, propylene oxide, and n-hexene oxide. Investigations of the copolymerizations of ω-epoxyalkanoates with other cyclic ethers and the use of other modified aluminumalkyl–water systems as initiators are now underway. Classical cationic initiators for ω-epoxyalkanoate polymerizations have not resulted in the formation of high polymers although the epoxides were not present after several days of reaction.
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Vogl, O., Muggee, J. & Bansleben, D. Poly(alkylene oxide) Ionomers. V. Polymers and Copolymers of Cyclic Ethers with Pendant Carboxylate Groups. Polym J 12, 677–686 (1980). https://doi.org/10.1295/polymj.12.677
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DOI: https://doi.org/10.1295/polymj.12.677