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Polymerizability of methyl α-substituted acrylates containing methoxycarbonyl groups

✍ Scribed by Masaki Kudoh; Fumihiko Akutsu; Yoshiyuki Odagawa; Kiyoshi Naruchi; Masatoshi Miura

Publisher
John Wiley and Sons
Year
1994
Tongue
English
Weight
266 KB
Volume
195
Category
Article
ISSN
1022-1352

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✦ Synopsis

Abstract

Dimethyl 4‐methyl‐1‐pentene‐2,4‐dicarboxylate (3) and trimethyl 4‐methyl‐1‐octene‐2,4,7‐tricarboxylate (4) are not radically homopolymerizable. Dimethyl 1‐hexene‐2,4‐dicarboxylate (5) polymerizes slowly to yield a small amount of oligomers. Homopolymerization of dimethyl 1‐butene‐2,4‐dicarboxylate (6) affords a high‐molecular‐weight polymer. Radical copolymerization of these methyl α‐substituted acrylates (M~2~) with styrene (M~1~) was carried out at 60°C using AIBN, and the following monomer reactivity ratios were obtained; 3: r~1~ = 0,983, r~2~ = 0,000; 4: r~1~ = 0,938, r~2~ = 0,000; 5: r~1~ = 0,672, r~2~ = 0,119; 6: r~1~ = 0,566, r~2~ = 0,195. The polymerizability of these methyl acrylate derivatives is influenced by the steric effect of the α‐substituents.

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