Abstract: Provided herein is a polymeric composition, comprising a random copolymer comprising three or more distinct monomers, wherein a first monomer is a biorenewable oil and at least one monomer has been polymerized into a thermoplastic polymer. Also provided herein is a modified asphalt for use in several asphalt end-use applications, comprising an asphalt binder in an amount ranging from about 60-99.9 wt %, an asphalt modifier in an amount ranging from about 0.1-40 wt %, wherein the asphalt modifier comprises about 1-75 wt % of a thermoplastic polymer and a remaining balance of biorenewable oil.