ISOPRENE COPOLYMER AND ITS PRODUCTION METHOD Russian patent published in 2016 - IPC C08F297/00 C08F297/06 C08F4/52 C08L53/00 C08L53/02 

FIELD: chemistry.

SUBSTANCE: invention relates to development of isoprene polymer. Disclosed is isoprene copolymer containing styrene block or butadiene unit in its end part, where styrene monomers are less than 5 mol. % of all monomers which form isoprene copolymer containing styrene block, butadiene monomers make 10 mol. % or less from all monomers which form isoprene copolymer containing butadiene unit and content of cis-1,4 bonds in part produced of isoprene, which is equal to total at least of 95 %. Invention also discloses method of producing isoprene copolymer (versions), rubber composition and tire.

EFFECT: development of a rubber composition and tire, having good resistance to tensile strength, resistance to abrasion, resistance to cracking, which characterises wear resistance.

14 cl, 2 tbl, 15 ex