Abstract
AbstractDi‐tert‐butyl maleate (DtBM) did not polymerize with 2,2′‐azobis(isobutyronitrile) as a radical initiator, but DtBM easily homopolymerized via a monomer‐isomerization radical polymerization mechanism to give a high molecular weight polymer when morpholine was added into the polymerization system as an isomerization catalyst. The feature of the monomer‐isomerization polymerization of DtBM was investigated in detail. The polymer obtained was confirmed to consist of a poly(tert‐butoxycarbonylmethylene) structure similar to that from di‐tert‐butyl fumarate. Subsequent pyrolysis of the resulting polymer at 180°C is a useful route to synthesis of a high molecular weight poly(fumaric acid). © 1993 John Wiley & Sons, Inc.
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