Asphalt binder blend and method of rejuvenating and softening asphalt cement with brown grease
US9416274B2 · kind B2 · utility
23Cited by
3References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 13, 2014 |
| Grant date | Aug 16, 2016 |
| Priority date | — |
| Expiry date | Sep 7, 2034 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2555/64
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
An asphalt binder blend includes a mixture of new and/or recycled asphalt cement and brown grease, wherein the brown grease has a free fatty acid (FFA) level greater than about 40% w/w, preferably greater than about 75% w/w. A volatile fraction of the brown grease may be removed, and the brown grease may be polymerized. An asphalt pavement material and a method of preparation thereof, wherein the asphalt pavement material includes a mixture of new and/or recycled aggregate and the asphalt binder blend including brown grease.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.