Modified asphalt binders and asphalt paving compositions
US8124677B2 · kind B2 · utility
1Cited by
53References
22Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Sep 14, 2010 |
| Grant date | Feb 28, 2012 |
| Priority date | — |
| Expiry date | Sep 14, 2030 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L53/02
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A modified asphalt binder composition prepared by combining asphalt binder, phosphorus pentasulfide, and less than 2.5 parts by weight unsaturated polymer, per 100 parts by weight asphalt binder, to thereby produce a modified asphalt binder composition characterized by an elongation recovery at 25° C., as determined according to AASHTO T301, of greater than 75%, where the phosphorus pentasulfide includes a blend of P4S10 and P4S9.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.