BLOCK COPOLYMER COMPOSITIONS FOR POLYMER-BITUMEN MIXTURES Russian patent published in 2025 - IPC C08L95/00 C08L53/02 C08F297/04 D06N5/00 

FIELD: chemistry.

SUBSTANCE: invention relates to block copolymer compositions for polymer-bitumen mixtures. Disclosed are a butadiene-styrene block-copolymer composition for polymer-bitumen mixtures, containing, wt.%: 0-5.0 free homopolystyrene, 65.0-75.0 diblock copolymer, of which 25.0-74.95 wt.% diblock copolymer of formula A-(A/B), and 0.05-40.0 wt.% of a functionalised diblock copolymer of formula A-(A/B)-Fn, and 20-35 cross-linked triblock copolymer (A-A/B)₂X, where A is a polystyrene block, A/B is a random copolymer block of styrene and 1,3-butadiene, Fn is a functional group selected from a group of vinylsilanes containing alkoxy or amino groups, X is the remainder of the double-beam cross-linking agent; method of producing disclosed butadiene-styrene block-copolymer composition for polymer-bitumen mixtures, polymer-bitumen mixture for roof, containing disclosed butadiene-styrene block-copolymer composition, and the use of the disclosed polymer-bitumen mixture in the manufacture of roofing materials.

EFFECT: improving adhesion properties of the polymer-bitumen mixture and achieving good processability of the polymer-bitumen compositions while maintaining a balance between adhesion and cohesion properties.

12 cl, 2 tbl, 16 ex