The a-diolefins 1, 6-heptadiene, 1, 5-hexadiene and 2, 5-dimethyl-1, 5-hexadiene have been polymerized by metal alkyl coordination catalysts to yield soluble polymers which are believed to contain carbocyclic rings in the polymer chaiu. Poly-1, 6-heptadiene has been dehydrogenated to yield a polymer which shows aromatic and ineta substitution absorption in the infrared region and absorption for a benzene nucleiis ill the ultraviulet regioii. h new ...
