Liquid composition
AssigneeShell Oil Company
InventorMark Lawrence Brewer
Life of this patent
Estimating the term…
Abstract
A liquid fuel composition comprising a base fuel suitable for use in an internal combustion engine; one or more organic UV filter compounds; and one or more ester co-additive compounds provides improvements in terms of stability properties in an additive blend containing said one or more organic UV filter compounds and said one or more ester co-additive compounds, particularly at low temperatures, such as temperatures of 5° C. or lower.
Claims13
A liquid fuel composition comprising:
- (a) a base fuel suitable for use in an internal combustion engine;
- (b) in the range of from 10 ppmw to 2 wt %, by weight of the liquid fuel composition, of one or more organic UV filter compounds;
- and
- (c) in the range of from 0.001 wt % to 0.5 wt %, by weight of the liquid fuel composition, of one or more ester co-additive compounds selected from esters of monoalcohols and monocarboxylic acids prepared by the reaction of a C4-C18 branched or straight-chain monocarboxylic acid with a C4-C18 branched or straight chain monoalcohol, and esters of monoalcohols and dicarboxylic acids prepared by the reaction of a C4-C12 branched or straight chain dicarboxylic acid with a C3-C18 branched or straight chain monoalcohol.
An additive blend suitable for use in a liquid fuel composition wherein the additive blend comprises (i) one or more organic UV filter compounds;
- (ii) one or more ester co-additive compounds selected from esters of monoalcohols and monocarboxylic acids prepared by the reaction of a C4-C18 branched or straight-chain monocarboxylic acid with a C4-C18 branched or straight chain monoalcohol, and esters of monoalcohols and dicarboxylic acids prepared by the reaction of a C4-C12 branched or straight chain dicarboxylic acid with a C3-C18 branched or straight chain monoalcohol, and mixtures thereof;
- and one or more detergents.
A method of increasing the solubility of one or more organic UV filter compounds in a liquid fuel composition, comprising:
- providing a liquid fuel composition comprising:
- (a) a base fuel suitable for use in an internal combustion engine;
- (b) one or more organic UV filter compounds in the range of from 10 ppmw to 2 wt %, by weight of the liquid fuel composition;
- and
- (c) in the range of from 0.001 wt % to 0.5 wt %, by weight of the liquid fuel composition, of one or more ester co-additive compounds selected from esters of monoalcohols and monocarboxylic acids prepared by the reaction of a C4-C18 branched or straight-chain monocarboxylic acid with a C4-C18 branched or straight chain monoalcohol, and esters of monoalcohols and dicarboxylic acids prepared by the reaction of a C4-C12 branched or straight chain dicarboxylic acid with a C3-C18 branched or straight chain monoalcohol.
Dependencies are inferred from the claim text.