Novel demulsifiers
AssigneeCroda International PLC
InventorsHanamanthsa Shankarsa Bevinakatti, Neil Grainger, Tracey Joanne Wardell
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Abstract
The invention relates to novel demulsifiers for use in the demulsification of oils from water and vice versa, including the demulsification of crude oil from sea water or brine. In particular, the present invention relates to novel demulsifiers which are environmentally friendly, or ‘green’, and which can be used without restriction on-site in offshore oil drilling fields, for example in the North Sea. The novel demulsifiers are based on the reaction product of alkoxylated polyols or polyol esters with dicarboxylic acids.
Claims17
A demulsifier comprising the reaction product of:
- a) an alkoxylated polyol or ester thereof;
- and
- b) a dicarboxylic acid.
(canceled)
A demulsification formulation comprising a demulsifier which is the reaction product of:
- a) an alkoxylated sorbitol or sorbitan ester;
- b) a dicarboxylic acid;
- and
- c) optionally, an end-cap.
A method of demulsifying an oil-in-water or water-in-oil emulsion, the method comprising adding a reaction product of:
- a) an alkoxylated sorbitol or sorbitan ester;
- b) a dicarboxylic acid;
- and
- c) optionally, an end-cap to the emulsion.
(canceled)
A method for obtaining a demulsifier, comprising reacting:
- a) an alkoxylated polyol or ester thereof;
- with
- b) a dicarboxylic acid.
Dependencies are inferred from the claim text.