Additive for a bitumen and bituminous product
US9029439B2 · kind B2 · utility
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21Claims
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Key dates
| Filing date | Jan 28, 2011 |
| Grant date | May 12, 2015 |
| Priority date | — |
| Expiry date | Jan 28, 2031 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2555/54
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
An additive for a bitumen or polymer modified bitumen product, which is prepared by mixing together a sulphur-based product, a vulcanized rubber, for example, a waste vulcanized rubber, preferably a fatty acid, and a bitumen, is described. The use of this additive for preparing, with very limited gaseous emissions, elastomer-containing bituminous product is also described. Such use may be especially suitable for making bituminous coated material including, for example, asphalt concrete.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.