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AssigneeFirestone Polymers, LLC & Heritage Research Group
InventorsWilliam L. Hergenrother, Peter W. Boerner, Daniel F. Graves, Christine Rademacher, Timothy P. Reece, Herbert L. Wissel
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A method for forming a modified asphalt binder composition, the method comprising preparing a phosphorus pentasulfide-binder concentrate by introducing and mixing phosphorus pentasulfide and asphalt binder, where the phosphorus pentasulfide-binder concentrate includes greater than 0.5 parts by weight phosphorus pentasulfide per 100 parts by weight asphalt, preparing a polymer-binder concentrate by introducing and mixing polymer and asphalt binder, where the polymer-binder concentrate includes greater than 5 parts by weight polymer per 100 parts by weight asphalt, and introducing and mixing the phosphorus pentasulfide-binder concentrate with the polymer-binder concentrate to form a modified asphalt binder composition, where the phosphorus pentasulfide includes a blend of P4S10 and P4S9.
A method for forming a modified asphalt binder composition, the method comprising:
A modified asphalt binder composition comprising the combination or the reaction product of:
An asphalt composition which comprises the reaction product of an asphalt, an unsaturated polymer, a source of phosphorus and a source of sulfur, wherein the source of phosphorus and the source of sulfur form reactive crosslinks between components of the asphalt and the unsaturated polymer, wherein the source of phosphorus and the source of sulfur comprises phosphorus pentasulfide, and where the phosphorus pentasulfide includes a blend of P4S10 and P4S9.
Dependencies are inferred from the claim text.