| 摘要 |
A bituminous composition which comprises a bituminous component and a block copolymer of a conjugated diene and a monovinylaromatic hydrocarbon, wherein the block copolymer 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, whereas the diblock has an apparent molecular weight which is in the range of from 100,000 to 170,000, is of use particularly in roofing applications. |
