Performance modifiers for bitumen comprising straight and branched chain fatty amide waxes
US9493633B2 · kind B2 · utility
8Cited by
0References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 11, 2014 |
| Grant date | Nov 15, 2016 |
| Priority date | — |
| Expiry date | Mar 11, 2034 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02A30/30
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention generally relates to the discovery that a blend of linear and branched amide wax additives can be used to enhance the performance of asphalt binders and asphalt emulsion residues. In particular, high temperature properties of asphalt pavement can be improved while maintaining or improving low temperature properties. The additives also improve workability and lower processing temperatures for asphalt paving (e.g. warm mix) or for roofing. These amide wax additives can reduce the tracking of tack coats, by decreasing binder penetration and forming a non-tacky surface layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.