Plastomer-modified asphalt binders meeting MSCR specifications, asphalt paving materials with such asphalt binders, and methods for fabricating such asphalt binders
US9969649B2 · kind B2 · utility
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18Claims
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Key dates
| Filing date | Aug 24, 2017 |
| Grant date | May 15, 2018 |
| Priority date | — |
| Expiry date | Aug 24, 2037 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2555/86
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Plastomer-modified asphalt binders meeting MSCR specifications, asphalt paving materials with such asphalt binders, and methods for fabricating such asphalt binders are provided. The asphalt binder contains a base asphalt and a plastomer. If the plastomer has a drop point no greater than about 139° C., the asphalt binder further contains sulfur; sulfur-containing compounds, such as hydrocarbyl polysulfides and thiuram disulfides; phenolic resins; metal oxides; or a combination thereof. The asphalt binder is substantially free of elastomer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.