Random copolymers of propylene with 1,5-hexadiene containing only cyclopentane units in main chain and tailoring structure and mechanical properties of the copolymers

The random copolymers of the PP/1,5-HD were obtained using dimethyl pyridylamidohafnium catalyst, containing absolutely methylene-1,3-cyclopentane in the polymer chain without pendent vinyl groups and crosslinking. The polymers contain variable amounts of comonomeric units, showing desired physical properties ranging from thermoplastic to elastoplastomeric to elastomeric.