CONJUGATED DIENE BASED POLYMER, METHOD FOR OBTAINING THEREOF, POLYMER COMPOSITION BASED ON CONJUGATED DIENE AND RUBBER COMPOSITION Russian patent published in 2024 - IPC C08F236/10 C08L9/00 C08F2/38 

FIELD: chemistry.

SUBSTANCE: invention relates to a polymer based on a conjugated diene. Disclosed is a polymer based on a conjugated diene for producing tires, having a number of branches of 7 or more and 84 or less, amount of bound aromatic vinyl is 1 wt.% or more and 30 wt.% or less, and content of vinyl bond in bound diene with conjugated double bonds is equal to 11 mol.% or more and 35 mol.% or less, where the conjugated diene based polymer is a copolymer of at least one conjugated diene compound and at least one aromatic vinyl compound, where the conjugated diene is at least one diene selected from the group consisting of 1,3-butadiene, isoprene, 2,3-dimethyl-1,3-butadiene, 1,3-pentadiene, 3-methyl-1, 3-pentadiene, 1,3-hexadiene and 1,3-heptadiene, and the aromatic vinyl compound is at least one compound selected from the group consisting of styrene, p-methylstyrene, alpha-methylstyrene, vinyl ethylbenzene, vinylxylene, vinylnaphthalene and diphenylethylene; method of producing the disclosed polymer, a polymer composition based on the disclosed conjugated diene for a rubber composition and a rubber composition for tires.

EFFECT: achieving excellent abrasion resistance and low hysteresis losses of the vulcanisate obtained from the disclosed polymer having excellent processability.

17 cl, 7 tbl, 24 ex