FIELD: chemistry.
SUBSTANCE: invention relates to systems of polar modifiers for producing block copolymers of vinyl aromatic monomers and monomers of conjugated dienes via anionic polymerisation initiated with organolithium compounds. Invention also relates to block copolymers obtained using a polar modifier system, as well as to a method of producing block copolymers of vinyl aromatic monomers and monomers of conjugated dienes.
EFFECT: block copolymers obtained using systems of polar modifiers and methods according to the invention include very high levels of repeating units with side vinyl double bonds; moreover, the invention enables to obtain block copolymers of this type with high rate of polymerisation with narrow molecular weight distribution.
42 cl, 5 dwg, 23 tbl, 34 ex
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