Modified asphalt binder material using crumb rubber and methods of manufacturing a modified asphalt binder
US8664303B2 · kind B2 · utility
5Cited by
14References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 29, 2008 |
| Grant date | Mar 4, 2014 |
| Priority date | — |
| Expiry date | Sep 12, 2030 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2555/86
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
In a first aspect, bituminous asphalt binder materials which are modified by the addition of crumb rubber or ground tire rubber are described. In a second aspect, the present invention is directed to methods of producing a modified asphalt binder containing crumb rubber or ground tire rubber. The modified asphalt binders comprise neat asphalt, crumb rubber, one or more synthetic polymers, and one or more acids. The crumb rubber may be obtained from recycled truck and/or automobile tires.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.