Environmentally friendly demulsifiers for crude oil emulsions
US8802740B2 · kind B2 · utility
2Cited by
13References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 22, 2009 |
| Grant date | Aug 12, 2014 |
| Priority date | — |
| Expiry date | Jun 25, 2030 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L71/02
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The present invention provides environmentally friendly demulsifiers for the breakdown of petroleum oil applications. The demulsification formulations of the present invention are biodegradable and are low in toxicity. The demulsifiers include a poly(tetramethylene glycol) and an alkylene glycol copolymer linked to the poly(tetramethylene glycol) by a difunctional coupling agent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.