Rubber-containing bituminous mixtures and methods for making and using same
US9018279B1 · kind B1 · utility
1Cited by
30References
40Claims
0Family size
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Key dates
| Filing date | Dec 5, 2012 |
| Grant date | Apr 28, 2015 |
| Priority date | — |
| Expiry date | Mar 8, 2033 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2555/34
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Disclosed are methods for producing rubber-containing bituminous mixtures by pressurizing mixtures of bituminous materials, crumb rubber, and one or more suspension agents with a gas, and then reducing the pressure, creating bubbles of the gas in the mixture. Also disclosed are methods of introducing gas into such mixture by rapid mixing. Mixtures produced by the disclosed methods, such as rubber-containing asphalt mixtures and paving compositions thereof, and their use are also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.