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US 12,435,183 B2Granted
Polyester demulsifier
AssigneeNouryon Chemicals International B.V.
InventorHanamanthsa Shankarsa Bevinakatti
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Abstract
A demulsifier includes the reaction product of a) alkoxylated castor oil, b) an acid having at least two carboxyl groups, a full or partial ester thereof, an anhydride thereof and combinations thereof, and optionally c) a fatty acid, a fatty acid ester and combinations thereof. A method of demulsifying a water-in-oil or oil-in-water emulsion includes adding the demulsifier to the emulsion and separating the emulsion into an oil phase and a water phase.
Claims8
A demulsifier comprising the reaction product of:
- a) alkoxylated castor oil;
- b) an acid having at least two carboxyl groups;
- and
- c) optionally, a fatty acid;
- wherein the alkoxylated castor oil comprises from 5 to 200 moles of alkoxy units per mole of castor oil and wherein the demulsifier has the structure:
- wherein R′ is —H or —CO—R, R is a hydrocarbon having from 7 to 21 carbon atoms, and X is a hydrocarbon having from 4 to 34 carbon atoms.
3 more elements
Dependencies are inferred from the claim text.