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US 5,180,483 AGranted
Dewaxing process
AssigneeShell Oil Company
InventorsJohannes F. H. Braams, Marinus J. Reynhout
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AssigneeShell Oil Company
InventorsJohannes F. H. Braams, Marinus J. Reynhout
Estimating the term…
This invention relates to a process of dewaxing a hydrocarbon oil involving the steps of separating and precipitating the wax component of the hydrocarbon oil. This process is facilitated by incorporating into the oil a linear polymer of carbon monoxide with one or more olefins comprising .alpha.-olefins with at least 10 carbon atoms per molecule (C.sub.10+ .alpha.-olefins) wherein in this polymer monomer units of carbon monoxide and olefins are present in a substantially alternating arrangement. Optionally, the process may also involve the use of a polymer of one or more olefinically unsaturated compound comprising of alkyl acrylates or alkyl methacrylates with at least 8 carbon atoms in the alkyl group (C.sub.8+ alkyl esters). The process may be practiced using the single-stage or multi-stage dilution method.
A process for dewaxing a wax-containing hydrocarbon oil comprising the steps of precipitating and separating the wax from said hydrocarbon oil, wherein said precipitating step is conducted in the presence of a linear polymer of carbon monoxide with one or more olefins comprising .alpha.-olefins with at least 10 carbon atoms per molecule (C.sub.10+ .alpha.-olefins), wherein in said polymer, monomer units of carbon monoxide and olefins are present in a substantially alternating arrangement.
Dependencies are inferred from the claim text.