Patent ID: 8679244

Claim:
A modified asphalt composition comprising: asphalt; a styrenic block copolymer represented by the chemical formula 1 or 2; and a palm wax with a melting temperature of approximately 60° C. or a hydrogenated palm wax with a melting temperature of approximately 55-65° C.; (A-B) n X (1) A-B-A (2) wherein A is a unit comprising an aromatic vinyl monomer having a weight-average molecular weight (M w ) of 3,000-30,000; B is a unit comprising a conjugated diene monomer or a unit comprising a conjugated diene monomer and an aromatic vinyl monomer, having a weight-average molecular weight (M w ) of 20,000-200,000; n is an integer of 2 to 6; and X is a residue of a coupling agent.