Selective Polymerization of 2-Isopropenyl-2-oxazoline and Cross-linking Reaction of the Polymers

Abstract

The selective polymerization of 2-isopropenyl-2-oxazoline possessing two polymerizable sites in molecule was studied. Due to a marked difference in .polymeriz-ability between the isopropenyl and oxazoline groups, this monomer provided soluble linear polymers by radical and cationic polymerization. The former was poly(2-isopro-penyl-2-oxazoline) with the oxazoline group as a side chain, and the latter N-meth-acryloyl polyethylenimine. The cross-linking reactions of reactive pendant groups in both polymers, which resulted from the radical and cationic polymerizations, gave cross-linked, insoluble products.