FIELD: chemistry.
SUBSTANCE: disclosed is a block-copolymer consisting of four blocks arranged as B-S-B-S. Two B polymer blocks contain a link of conjugated diene monomer and two S polymer blocks contain a link of vinylaromatic hydrocarbon monomer. Block B contains an amine in form of a B-amine structure, where block B is linked to only one S block. The invention also relates to a thermoplastic elastomer composition for modifying asphalt, which contains the block copolymer described above, to a method for synthesis of a tetra-block copolymer in accordance with the invention, as well as asphalt compositions containing such a block copolymer.
EFFECT: obtaining asphalt composition modifiers and the compositions themselves.
7 cl, 4 dwg, 1 tbl, 1 ex
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