Cyclic Imino Ethers, Polymerization

Abstract

Polymerized or copolymerized cyclic imino ether monomers are classified into monomers having the —NC—O— group in the ring (cyclic endo‐imino compounds) and cyclic monomers having an exo‐imino group. The polymerization of cyclic imino ethers is reviewed, as well as the chemistry of 2‐oxazolines and 5,6‐dihydro‐4 H ‐1,3‐oxazines.

Polymerization of methyl and phenyl oxazoline initiated with alkyl chloroformates

“…Methyl chloroformate reacts fast with oxazoline and yields, via an intermediate oxazolinium salt, the covalent chloride (2). This acts as the actual initiator of the polymerization, which proceeds through covalent mechanism.…”