Process for preparing bituminous compositions

Details Process for preparing bituminous compositions Process for preparing bituminous compositions

C - Chemistry, Metallurgy

08

L

400/1611

C08L 95/00 (2006.01)

Patent

CA 2027692

T4719FE ABSTRACT PROCESS FOR PREPARING BITUMINOUS COMPOSITIONS The invention provides a process for preparing a bitumen composition, which process comprises the steps of: a) blending a carbon black composition comprising carbon black and containing O to 10% by weight of bitumen based on the carbon black composition with a block copolymer composition, the block copolymer composition comprising a block copolymer and containing O to 10% by weight of bitumen based on the block copolymer composition, the block copolymer being selected Prom the group consisting of hydrogenated and unhydrogenated block copolymers, the block copolymers, before hydrogenation, comprising at least two blocks A, the block A comprising predominantly polymerised vinyl arene monomer units, and at lea t one block B, the block B comprising predominantly polymerized conjugated diolefin monomer units; and: b) combining the carbon black composition block copolymer blend with a bitumen to form the bitumen composition.

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