FIELD: chemistry.
SUBSTANCE: invention relates to a process for obtaining a branched polybutadiene with a high content of 1,4-cis-links. The method comprises polymerization of butadiene in the presence of an organic solvent, a catalyst system and at least one organic ester having at least one halogen atom. The catalyst system comprises at least one (a 1) neodymium carboxylate, (a 2) alkyl aluminum compound, (a 3) alkyl compound of aluminum containing at least one halogen atom. Curable elastomeric composition and final product are also described.
EFFECT: invention provides obtaining of a branched polybutadiene with a high content of 1,4-cis links with varying degrees of branching, and expanding the range of polymers with specific characteristics.
16 cl, 1 ex
