Bitumen solid at ambient temperature
US11459460B2 · kind B2 · utility
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19Claims
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Key dates
| Filing date | May 22, 2017 |
| Grant date | Oct 4, 2022 |
| Priority date | — |
| Expiry date | Feb 2, 2040 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2555/34
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Bitumen that is solid at ambient temperature in the form of granules that include a core made of a first bituminous material and a coating made of a second bituminous material, the second bituminous material having a total content of asphaltenes, extracted using n-alkane, of 30% to 50% by weight in relation to the total weight of the bitumen in the coating.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.