The copolymerization of 2‐substituted tetrahydrofurans with some cyclic ethers was investigated using BF3 · (C2H5)2O as initiator. 2‐Methyltetrahydrofuran (MTHF), which homopolymerizes only with great difficulty, was found to copolymerize with such monomers as epichlorohydrin and 3,3‐bis(chloromethyl) oxacyclobutane (BCMO). Also, 2‐chloromethyltetrahydrofuran was found to copolymerize with 1,2‐oxides but scarcely copolymerized with BCMO. The monomer reactivity ratios were evaluated; the order of polymerizability of MTHF is discussed.
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Ishigaki et al. (1964) studied this question.
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