Some low molecular weight polymers of <i>d</i>‐limonene and related terpenes obtained by Ziegler‐type catalysts

Abstract

Abstract d ‐Limonene has been polymerized by use of Ziegler‐type catalysts to give a low molecular weight polymer which is identical in structure with those prepared by cationic initiation. The evidence indicates that the polymer has more than one type of recurring unit, at least one of which is bicyclic. α‐ and β‐pinene have also been polymerized by these catalysts. Data on optical activity and NMR spectra for all of the polymers are reported.