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US 2023/0139145 A1Published application
Blends of ethylene vinyl acetate copolymer and alpha olefin maleic anhydride copolymer as heavy pour point depressants
AssigneeEcolab USA Inc.
InventorAlexander Coleman PEARSON
Life of this patent
Estimating the term…
Abstract
A composition is provided that includes about 2 wt. % to about 25 wt. % of a copolymer including ethylene and vinyl acetate; about 2 wt. % to about 20 wt. % of a copolymer including an α-olefin and maleic anhydride; and about 55 wt. % to about 96 wt. % of a solvent. The composition can be used to decrease the pour point of a hydrocarbon, such as crude oil.
Claims20
A composition, comprising:
- about 2 wt % to about 25 wt % of a copolymer comprising ethylene and vinyl acetate;
- about 2 wt % to about 20 wt % of a copolymer comprising an α-olefin and maleic anhydride;
- and
- about 55 wt % to about 96 wt % of a solvent, wherein the α-olefin and maleic anhydride copolymer is about 5% to about 100% esterified.
1 more element
A composition, comprising:
- a hydrocarbon;
- a copolymer of ethylene and vinyl acetate;
- a copolymer of an α-olefin and maleic anhydride;
- and
- a solvent,
- wherein the composition comprises a greater weight percentage of the α-olefin and maleic anhydride copolymer than the copolymer of ethylene and vinyl acetate, and
- wherein the hydrocarbon is selected from the group consisting of topped crude oil, crude oil, vacuum gas oil, a heavy distillate refiner product, slop oil, a fuel oil, and any combination thereof.
4 more elements
A method of decreasing the pour point of a hydrocarbon, comprising:
- adding a composition to the hydrocarbon, wherein the composition comprises about 2 wt % to about 25 wt % of a copolymer comprising ethylene and vinyl acetate, about 2 wt % to about 20 wt % of a copolymer comprising an α-olefin and maleic anhydride, and about 55 wt % to about 96 wt % of a solvent,
- wherein the α-olefin and maleic anhydride copolymer is about 50% to about 100% amidated, and
- wherein the hydrocarbon has an API gravity of about 15 to about 55 and is not diesel, gasoline, or kerosene.
Dependencies are inferred from the claim text.