| 摘要 |
A bituminous binder composition is provided comprising: (a) 1 to 10 % by weight of a linear, radial or branched block copolymer comprising at least one monovinyl aromatic compound polymer block A and at least one conjugated diene polymer block B; and (b) 99 to 90 % by weight of a bituminous component having a penetration (25 DEG C, 0.1 mm) in the range of from 40 to 300 dmm and having a softening point in the range of from 30 to 70 DEG C, wherein the content of monovinyl aromatic compound of said block copolymer is in the range of from 30 to 50 % by weight based on the weight of total block copolymer and wherein each initially prepared combination AB of said polymer blocks A and B has an apparent molecular weight in the range of from 45,000 to 80,000. |
