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US 10,479,892 B2Granted
Functional group asphalt modifiers, methods of modifying asphalt, asphalt compositions and methods of making
AssigneeLehigh Technologies, Inc.
InventorsPremnathan Naidoo, Vernon Patrick Keating
Life of this patent
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Abstract
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.
Claims5
An asphalt comprising:
- ground tire rubber;
- 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 comprises polypropylene and polymers having glycidyl functionality;
- and,
- wherein the binder comprises polyethylene by-product waxes.
5 more elements
A method of treating a petroleum asphalt, the method comprising:
- contacting the petroleum asphalt with an additive to form a treated asphalt, wherein the additive comprises polypropylene, by-product wax, and polymers having glycidyl functionality, wherein the glycidyl functionality is selected from the group consisting of glycidyl alkylacrylate functionality, glycidyl methacrylate functionality, alkylene-alkyl acrylate-glycidyl alkylacrylate functionality, and ethylene-butyl acrylate-glycidyl methacrylate functionality;
- and
- adding ground tire rubber to the treated asphalt.
Dependencies are inferred from the claim text.