Polymer-modified asphalt composition and process for the preparation thereof

摘要: A polymer-modified asphalt composition containing (a) about 80 to 99.7 weight percent of a polymer-asphalt reaction product prepared by reacting (i) 100 parts an having initial viscosity at 60° C. from 20,000 poise, with (ii) 0.5 11 glycidyl-containing ethylene copolymer 0.1 20 glycidyl moieties and weight-average molecular 10,000 1,000,000; (b) 0.3 styrene/conjugated-diene block 100,000 1,000,000.