| abstract |
The present invention relates to a block copolymer, a method of preparing same, and an asphalt composition comprising same, wherein the block copolymer comprises an aromatic vinyl-based polymer block, a conjugated diene-based polymer block, and a coupling agent linker, wherein the conjugated diene-based polymer block contains hydroxyl groups, and the content of the hydroxyl groups is 0.5 mol% to 12.0 mol% with respect to the double bond content of a conjugated diene-based monomer unit. |