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US 8,147,567 B2Granted
Enhanced biodiesel fuel having improved low-temperature properties and methods of making same
AssigneeChevron U.S.A. Inc.
InventorsGuangci Zhou, Curt Munson, Saleh A. Elomari, Stephen H. Roby
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Abstract
The present invention is generally directed to novel biodiesel fuel compositions having enhanced low-temperature properties. The present invention is additionally directed to methods (i.e., processes) for making such enhanced biodiesel fuels by improving the low-temperature properties of ester-based biodiesel fuels via in situ enhancement and/or additive enhancement.
Claims5
An enhanced biodiesel fuel composition comprising:
- a) an ester-based biodiesel component;
- and
- b) a functionalized ester component comprising functionalized ester species having the general formula:
- wherein R1 is selected from the group consisting of C1 to C3 alkyl moieties;
- wherein R2 and R3 are independently selected from the group consisting of C1 to C10 alkyl moieties, C1 to C10 alkenyl moieties, and combinations thereof;
- wherein R4 is selected from the group consisting of C2 to C20 alkyl moieties and C2 to C20 alkenyl moieties;
- wherein R5 is selected from the group consisting of —H, hydroxyl, and C2 to C20 ester-forming carboxylate functional moieties;
- and wherein the functionalized ester species amount to at least about 0.1 weight percent of the enhanced biodiesel fuel.
5 more elements
Dependencies are inferred from the claim text.