Ground tire rubber density modification using elastomeric polymers
US11242459B2 · kind B2 · utility
2Cited by
1References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 19, 2019 |
| Grant date | Feb 8, 2022 |
| Priority date | — |
| Expiry date | Dec 13, 2039 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2555/84
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention relates to an asphalt product that comprises an asphalt component and a plurality of pellets comprising a mixture of a ground tire rubber and an elastomeric polymer, where the density difference between the asphalt component and the plurality of pellets is less than 10%. The present invention further relates to a pellet comprising a ground tire rubber (“GTR”) and an elastomeric polymer mixed with the GTR, where the GTR has a density of less than 1.12 g/cm3. Also disclosed are methods of producing improved asphalt and paving a surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.