Bulletin of the Chemical Society of Japan
Online ISSN : 1348-0634
Print ISSN : 0009-2673
ISSN-L : 0009-2673
The Copolymerization of the Vinyl Monomer with a Cyclic Compound. II. The Cationic Copolymerization of Some Vinyl Monomers with β-Propiolactone
Shuzo AokiYoshiyuki HaritaTakayuki OtsuMinoru Imoto
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1965 Volume 38 Issue 11 Pages 1928-1934

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Abstract

The copolymerization of several vinyl monomers, such as styrene (St), α-methylstyrene and isobutyl vinyl ether, with β-propiolactone (β-PL) as catalyzed by Lewis acids has been investigated in methylene chloride at 0°C. In the copolymerization of β-PL and St using boron trifluoride-diethyl etherate or stannic chloride as a catalyst, the copolymer was obtained. The apparent monomer reactivity ratios were estimated to be as follows:
r(β−PL)=0.2; r(St)=20
In the other copolymerization systems, the copolymer was not obtained. The mechanism of these copolymerizations has been discussed.

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