POLYOLEFIN ASPHALT MODIFIERS, METHODS OF MODIFYING ASPHALT, ASPHALT COMPOSITIONS AND METHODS OF MAKING

摘要

An asphalt additive comprising a primary rheology modifying component and a secondary rheology modifying component, and asphalt compositions and products having such additive incorporated therein. The primary rheology modifying component is generally a polymer, and the secondary rheology modifying component may comprise a petroleum micro-wax.

主权项

1. An asphalt comprising:
a first component comprising a petroleum asphalt; and, a second component comprising particles formed from a melted mixture of a resin and a binder; wherein, the second component is dispersed within the first component; wherein the resin is selected from the group consisting of at least one polymer alpha olefin selected from the group consisting of polyethylene homopolymer, homopolymers formed from α-olefins having more than 3 carbon atoms, and copolymers formed from 2 or more different α-olefins having 2 or more carbon atoms; and, wherein the binder is selected from the group consisting of polyethylene by-product waxes, petroleum micro waxes, Fischer-Tropsch hard wax, Trinidad Lake asphalt (TLA), gilsonite, terpolymer, and montan waxes.