Method for the preparation of bitumens modified by polymers

Details Method for the preparation of bitumens modified by polymers Method for the preparation of bitumens modified by polymers

1979-02-15

1980-12-02

Marquis, Melvyn I.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 237H, 260 285B, 260 285D, C08L 9100

Patent

active

042370523

ABSTRACT:
A process for the preparation of bitumen-polymer compositions, characterized by the fact that the bitumens are modified by grafting of a dihalopolybutadiene polymer that serves as a receptive structure to block polymers and to elastomers co-vulcanizable with the grafted bitumen.
The elastomers are selected from the group that includes linear polybutadiene-polystyrene block copolymers, a polystyrene-polybutadiene block copolymer, and a vulcanizable polynorbornene rubber. They are used as road and industrial bitumens.

REFERENCES:
patent: 3853800 (1974-12-01), Haberl
patent: 3992340 (1976-11-01), Bonitz
patent: 4011184 (1977-03-01), Van Reijendam et al.

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