Safe sulfur slurry
US6153004A · kind A · utility
11Cited by
4References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 17, 1999 |
| Grant date | Nov 28, 2000 |
| Priority date | — |
| Expiry date | Dec 17, 2019 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09D195/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A sulfur in oil in asphalt blend is disclosed. A polymer-free slurry of solid, elemental, sulfur in liquid oil is used to add sulfur to asphalt. Addition of a slurry of solid sulfur in oil, or oil containing sulfur compounds, permits rapid and effective dispersion of the sulfur component in the asphalt. Uneven mixing, which can occur when sulfur is separately added as a solid, or in molten forms to the asphalt, is avoided. The method is safer because formation of explosive clouds of sulfur dust is avoided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.