| 摘要 |
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 0 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 0 to 10% by weight of bitumen based on the block copolymer composition, the block copolymer being selected from the group consisting of hydrogenated and unhydrogenated block copolymers, the block copolymer, before hydrogenation, comprising at least two blocks A, the blocks A comprising predominantly polymerised vinyl arene monomer units, and at least one block B, the block B comprising predominantly polymerised conjugated diolefin monomer units; and b) combining the carbon black composition block copolymer blend with a bitumen to form the bitumen composition. ; |
