METHOD FOR PRODUCING BUTADIENE POLYMERS OR BUTADIENE COPOLYMERS WITH STYRENE AND THEIR FUNCTIONALIZED ANALOGUES WITH A HIGH CONTENT OF 1,2-UNITS IN THE BUTADIENE PART Russian patent published in 2018 - IPC C08F136/06 C08F36/06 C08F236/10 C08F2/38 

FIELD: chemistry.

SUBSTANCE: invention relates to the production of butadiene, butadiene-styrene rubbers and their functionalized analogs with a high content of 1,2-units in the butadiene part. Method for producing butadiene polymers or butadiene copolymers with styrene and their functionalized analogs with a high content of 1,2-units in the butadiene part comprises the use of a highly active initiating system based on an organolithium compound and an aminoalkyl ether. As an aminoalkyl ester, a compound of formula

where R₁, R₂ – alkyl group or hydrogen, R₃, R₄, R₅, R₆, R₇ – alkyl group or hydrogen are used, wherein the molar ratio of aminoalkyl ether : organolithium compound is 0.1÷2.0:1.0, and the (co)polymerization process is carried out at a temperature of 30–50 °C.

EFFECT: high polymerization activity of the initiating system at low temperature of the (co)polymerization and low consumption of the modifier are achieved, butadiene polymers and butadiene copolymers with styrene and their functionalized analogs with a high content of 1,2-units in the butadiene part (more than 80 %) are produced.

1 cl, 1 tbl, 8 ex