FIELD: chemistry.
SUBSTANCE: invention relates to a method of obtaining polydienes. The method of the polydienes obtaining includes a stage of polymerisation of a conjugated diene monomer in the presence of dihydrocarbyl ether with obtaining a polydiene with the content of cis-1,4-bonds higher than 99%, where the said stage of polymerisation is carried out in a polymerisation mixture, which contains less than 20 wt % of an organic solvent relative to the total weight of the polymerisation mixture, and where at the said stage of polymerisation applied is a catalytic system based on lanthanide, which includes a combination or a product of reaction of ingredients, which include (a) lanthanide compound, (b) aluminoxane, (c) organo-aluminium compound, different from aluminoxane, and (d) bromine containing compound, selected from the group, which consists of elementary bromine, bromine-containing mixed halogens and organic bromides.
EFFECT: obtaining the polymer with the content of cis-1,4-bonds higher than 99% and with low molecular-weight distribution, equal to less than 2.
12 cl, 5 tbl, 21 ex
