Emulsion breaking process
Patent 7612117 Issued on November 3, 2009. Estimated Expiration Date: 
November 17, 2025. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
November 17, 2025. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 2106180 2163720 2250445 3280035 3779935 Drilling fluids containing polyethoxylated tetraalkyl acetylenic diols Solvent based dewatering system with demulsifier Process for treating used industrial oil Process for treating used motor oil and synthetic crude oil Breaking oil-in-water emulsions InventorsAssigneeApplicationNo. 11281532 filed on 11/17/2005US Classes:516/191The compound contains ether group (e.g., polyethylene oxide)ExaminersPrimary: Metzmaier, Daniel SAttorney, Agent or FirmForeign Patent References
International ClassesB01D 17/05C10G 33/00 C10G 17/00 AbstractThe invention pertains to the use of a class of acetylenic surfactants to resolve or break water and oil emulsions. The surfactants are of particular advantage in resolving crude oil emulsions of the type encountered in desalter and similar apparatus designed to extract brines from the crude as they partition to the aqueous phase in the desalter.Other References
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