No-sulfur fuel lubricity additive
AssigneeBaker Hughes Incorporated
InventorsViet Q. Hoang, Philip L. Leung, Gordon T. Rivers
Life of this patent
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Abstract
Reacting an alkylene carbonate, such as ethylene carbonate, with dimer acid in the presence of a catalyst, such as a tertiary amine catalyst, gives a dimer acid diester having essentially no sulfur, and thus may be added to ultra-low sulfur diesel fuel downstream of a refinery. The diester enhances the lubricity properties of hydrocarbon fuels, increases their service life and fuel efficiency. The manufacturing process time may be decreased significantly compared with a process using ethylene glycol instead of ethylene carbonate, and much less ethylene glycol by-product results.
Claims5
A method for producing a fuel lubricity additive comprising reacting an alkylene carbonate with a dimer acid reactant in the presence of a catalyst selected from the group consisting of tertiary amines, metal oxides, metal hydroxides, and combinations thereof, where the metal in the metal oxides and metal hydroxides are selected from the group consisting of alkaline earth metals, transition metals, lanthanide metals and combinations thereof.
Dependencies are inferred from the claim text.