| 摘要 |
The present invention provides a bituminous composition comprising a bituminous component and a block copolymer composition comprising at least a conjugated diene block, and at least an aromatic monovinyl hydrocarbon block, characterized in that the block copolymer composition has a vinyl content of at least 25 percent by weight, based on total diene content, and a diblock content of 25 percent by weight or less, and any diblock copolymer present has an apparent molecular weight of about 100,000 to 170,000; and the block copolymer composition itself. |
