Environmentally friendly demulsifiers for crude oil emulsions
US7566744B2 · kind B2 · utility
8Cited by
8References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 20, 2004 |
| Grant date | Jul 28, 2009 |
| Priority date | — |
| Expiry date | Aug 4, 2025 |
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 break down 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.