FIELD: chemistry.
SUBSTANCE: invention relates to production of synthetic rubbers, in particular diene (co)polymers, such as polybutadiene, polyisoprene and styrene-butadiene rubber (SBR), used in production of tyres and industrial rubber articles, in modifying bitumens, in electrical engineering and in other fields. Described is a method of producing (co)polymers which is carried out in two parallel reactors, in each of which dienes are polymerised or copolymerised with each other and/or with arylvinyl compounds. An organolithium initiator, an electron donor additive and a branching agent are fed into the first reactor, and an organolithium initiator, an electron donor additive and a functionalising agent are fed into the second reactor. The polymerised mixtures obtained in the first reactor and the second reactor are mixed with each other and a chain termination reaction is then carried out.
EFFECT: obtaining said branched compounds that are characterised by a statistical distribution of monomer units, high content of vinyl units, a narrow molecular mass distribution and a controlled content of branched and functionalised parts in the copolymer.
15 cl, 20 ex
