1. A process for preparing a modified asphalt composition, the process comprising:
introducing to a molten asphalt composition from about 0.1 to about 10 parts by weight, per 100 parts by weight of the modified
asphalt composition, of a linear diene end-capped copolymer defined by the formula:
where each D is independently a polydiene block, each V is independently a vinyl aromatic block, each d is a polydiene end
cap, ? is a coupling moiety, and x is 2;
where ? is the residue of a coupling agent defined by the formula R1nM1X4-n, where each R1 is a hydrocarbyl group, M1 is silicon, X is a halogen atom, and n is 2.