Abstract
The influence of the parameters of the suspension process for the production of synthetic ethylene-propylene rubbers EPDM has been studied: pressure, temperature, ratio of reagents, and ratio of components of post-metallocene catalytic system. The process provides the production of rubbers with a yield of more than 10 kg of rubber per g of vanadium and physicochemical properties corresponding to the most demanded EPDM rubber grades. Ethylene and propylene were used as monomers. ENB or DCPD was used as the third diene monomer. It is shown that carrying out the suspension process in the presence of a catalytic system vanadium {2,4-di-tert- butyl-6-[(tert-butylimino)-methyl]phenolate}oxodichloride-ETCA-DEAC provides the production of EPDM rubbers with a yieldof 10,000-23,000 g/g V. The obtained highly demanded grades of EPDM rubbers can be used in the automotive and construction industries, in the production of rubberous products, sealants, adhesives and additives to technological fluids.
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