METHOD OF PRODUCING DIENE POLYMERS OR STATISTICAL VINYLARENE-DIENE COPOLYMERS Russian patent published in 2015 - IPC C08F36/06 C08F136/06 C08F236/06 C08F4/48 

FIELD: chemistry.

SUBSTANCE: invention relates to a method of producing diene (co)polymers. A method of producing diene polymers or vinylarene-diene statistical copolymers includes anionic (co)polymerisation in hydrocarbon solvents, at least one conjugated diene monomer, optionally in the presence of a vinyl aryl monomer, and using a compound belonging to a group of alkyl lithium compounds as an initiator, the method being characterised by that the entire alkyl lithium initiator is modified onsite through a reaction with a compound of general formula (I): R_m-(X-H)_n (I), where R is (C₂-C₂₀)-(cyclo)alkyl or (C₆-C₂₀)-aromatic radical, X is a heteroatom belonging to the VIA group of the periodic table, n is an integer equal to or greater than 1, m is an integer ≥1, which depends on the valence of the heteroatom X.

EFFECT: high stability of the active end of the chain, enabling regulation of the macrostructure of (co)polymers with respect to reduction of polydispersity or reduction of branching.

12 cl, 5 tbl, 14 ex