| 摘要 |
The present invention provides a bituminous composition which comprises a bituminous component and a block copolymer composition comprising at least one block of a conjugated diene and at least one block of a monovinylaromatic hydrocarbon, wherein the block copolymer composition has a vinyl content of at least 25% by weight based on the total diene content and a diblock content of 25 wt% or less, and any diblock copolymer present has an apparent molecular weight which is in the range of from 100,000 to 170,000; and the block copolymer composition per se. |
