Asphalt improvement
US5580376A · kind A · utility
12Cited by
22References
34Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 26, 1995 |
| Grant date | Dec 3, 1996 |
| Priority date | — |
| Expiry date | Apr 26, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T409/300448
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Novel compositions comprising asphalt, having improved durability, are disclosed, the compositions comprising or containing (a) from about 0.1 percent to about 5.0 percent of a metal hydrocarbyldithiophosphate, or mixture thereof, and (b) from about 0.1 percent to about 5.0 percent of an antioxidant butylated phenol, or mixture thereof, the ratio of (a) to (b) being from about 0.75:1 to about 4.0:1. A process of making such improved compositions is also described, as well as methods of utilizing such compositions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.