FIELD: chemistry.
SUBSTANCE: invention relates to a method of producing polydienes. The method of producing polydiene comprises the following steps: (i) obtaining an active catalyst by combining a lanthanide-containing compound, an alkylating agent and a halogen source, substantially in the absence of an amine, and (ii) polymerising a conjugated diene monomer in the presence of the active catalyst and an amine, where the amine is added before 5% of the conjugated diene monomer is polymerised. The invention includes an alternative version of the method.
EFFECT: method is carried out at industrial rates without significant risk of uncontrolled polymerisation and reactor clogging; the method enables to obtain a polymer with high content of cis-1,4-bonds and high functionality.
17 cl, 9 ex
