Investigation of the Technological Parameters of the Suspension Process for Production of Ethylene-Propylene Diene EPDM Rubbers in the Presence of a Post-Metallocene Catalytic System

The effect of the parameters of the suspension process for the production of EPDM synthetic ethylene-propylene rubbers, which leads to the production of rubbers with yields of more than 10 kg of rubber per 1 g of vanadium with physicochemical properties that correspond to the most popular grades of EPDM rubbers, was investigated. Ethylene, propylene, and ethylidenenorbornene or dicyclopentadiene were used as monomers. It was shown that realization of the suspension process in the presence of the catalytic system vanadium {2,4-ditertbutyl-6-[(tert-butylimino)methyl]phenolate}oxodichloride–ethyl trichloroacetate–diethylaluminum chloride leads to the production of EPDM rubbers with yields of 10000–23000 g/g of vanadium. The obtained grades of EPDM rubbers can be used in the automotive and construction industries, in the production of rubber products, sealants, adhesives, and as additives for technological fluids.