Settling aids for solids in hydrocarbons
Patent 5476988 Issued on December 19, 1995. Estimated Expiration Date: 
May 25, 2014. 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.
May 25, 2014. 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 3363021 3539653 Process for the removal of catalyst residues from olefin polymerization products Patent #: 5196630 InventorsAssigneeApplicationNo. 248927 filed on 05/25/1994US Classes:585/860, N-containing208/180, With added organic material208/289, With nitrogen containing compound585/4, And N containing585/833By addition of extraneous agent, e.g., solvent, etc.ExaminersPrimary: Achutamurthy, P.Attorney, Agent or FirmForeign Patent References
International ClassesC07C 007/00C10G 029/00 AbstractA method for accelerating the settling of finely divided solids in hydrocarbon fluids comprising adding to the hydrocarbon a sufficient settling amount of quaternary fatty ammonium compound. Preferably, the hydrocarbon is a fluid catalytic cracker slurry containing spent catalyst fines. |
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