Commercially available 10-undecenoic acid was esterified with 2,5-dimethylp
henol. After the supply of ester was properly complexed, it was polymerized
in quantities and in high yield to high molcular polymers. The polymeric e
sters were hydrolyzed with base to the acid salt, which were converted to t
he acids. Reactions with 1,1'-carbonyldiimidazole gave polyethylene-based p
olymeric imidazolids.