FIELD: chemistry.
SUBSTANCE: copolymer of butadiene and styrene is provided, containing at the beginning of the polymer chains tertiary amino groups of the formula (Ia) or (Ib), where R1, R2 are the same or different and are alkyl radicals, and also contain silane-containing carbinol groups of the formula (III) at the ends of the polymer chains or their metal salts or salts of semimetals, where R3, R4, R5 and R6 are the same or different and are hydrogen or an alkyl, alkaryl and aralkyl radical, A is a divalent organic radical, which may contain, in addition to carbon and hydrogen atoms, heteroatoms such as oxygen, nitrogen, sulfur and/or silicon. A method of producing these copolymers and variants for their use, including for the production of tires and various shaped articles, are also provided.
EFFECT: copolymer according to the invention is well-developed and allows the production of tires and moulded articles with the improved performance characteristics.
22 cl, 2 tbl, 3 ex
