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US 8,802,740 B2Granted
Environmentally friendly demulsifiers for crude oil emulsions
AssigneeNalco Energy Services, L.P.
InventorsSteven P. Newman, Carl Hahn, Robert D. McClain
Life of this patent
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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.
Claims4
A demulsifier comprising a poly(tetramethylene glycol) homopolymer and an alkylene glycol copolymer linked thereto by a difunctional coupling agent, wherein the demulsifier comprises the following formula:
- wherein f ranges from about 1 to about 100, m ranges from 1 to about 100, n ranges from 1 to about 100, x ranges from 1 to about 150, y ranges from 0 to about 150, and z ranges from 0 to about 150.
Dependencies are inferred from the claim text.