| abstract |
FIELD: chemistry. n SUBSTANCE: described is a method of producing butadiene-styrene statistical polymers via copolymerisation of monomers in the medium of a hydrocarbon solvent in the presence of an organolithium compound and a modifier, characterised by that the modifier used is a mixed alcoholate of sodium and calcium in molar ratio sodium: calcium equal to 1:0.1-2.5 respectively, in molar ratio of organolithium compound: mixed alcoholate of sodium and calcium equal to 1:0.5-2.5, respectively, with consumption of active metal equal to 2-12 mol per ton of monomers. n EFFECT: obtaining butadiene-styrene statistical polymers with high content of vinyl links and high content of 1,4-trans links. n 3 cl, 3 tbl, 9 ex |