METHOD OF PRODUCING BUTADIENE POLYMERS AND COPOLYMERS OF BUTADIENE WITH STYRENE Russian patent published in 2018 - IPC C08F236/06 C08F212/08 C07F1/02 

FIELD: technological processes.

SUBSTANCE: invention relates to production of rubbers by method of solution anionic polymerization of butadiene-styrene functionalized rubbers. Method for the preparation of functionalized copolymers of butadiene with styrene by copolymerization of said monomers in a hydrocarbon solvent medium using, as the initiating system an amino-containing organolithium compound obtained in the "in situ" in the presence of comonomers by the reaction of alkyllithium and a modifier, a mixed sodium-zinc alcoholate of an aromatic amine containing a group > NH, tetrahydrofurfuryl alcohol (THF) and an electron donor selected from the group: tetrahydrofuran (THF) or 2,2-ditetrahydrofuryl propane (DTHPP), or dimethyl ether of diethylene glycol (diglyme) at a molar ratio of alkyl lithium: mixed sodium-zinc alkoxide: electron donor, equal to 1.0:(0.1-1.0):(0-20.0). Method for the preparation of an organolithium compound modifier is also provided. Fuchsionalized copolymers of butadiene with styrene are intended for use in the composition of protective rubber compounds with silicic acid filler.

EFFECT: proposed method makes it possible to obtain functionalized copolymers of butadiene with styrene with improved elastic-hysteresis properties at a reduced consumption of electron donor and increased by the absence of sludge productivity equipment.

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