Hydrogen sulfide scavengers for asphalt
US11981817B2 · kind B2 · utility
0Cited by
19References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 26, 2020 |
| Grant date | May 14, 2024 |
| Priority date | — |
| Expiry date | Jan 16, 2042 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2555/60
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Scavenging compounds and compositions useful in reducing sulfide emissions from asphalt, such as polymer-treated asphalt, are disclosed. The scavenger compositions may include sulfide-scavenging agents. The scavenger compositions also include a metal-containing compound and optionally a solvent. Any of the compositions, sulfide-scavenging agents and metal-containing compounds may be anhydrous. Methods of using the compositions to reduce hydrogen sulfide emissions from asphalt are also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.