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.
Abstract:
An additive composition for use in a diesel fuel formulation, comprising a cetane improver in an inclusion complex with a modified cyclodextrin of formula (I): wherein n is an integer from 6 to 20, and R1, R2 and R3 are each independently selected from hydrogen, optionally substituted alkyl, optionally substituted aryl and carbonyl, provided that R1, R2 and R3 are not all hydrogen. Also provided is a diesel fuel formulation comprising the additive composition, and the use of a modified cyclodextrin (I) as a vehicle for a cetane improver in an additive composition or diesel fuel formulation.
Abstract:
Additives may be used to decrease the viscosity of heavy residual hydrocarbons. The additives are prepared using a formulation comprising: a first component selected from the group consisting of (alkoxylated)-(di or tri)-alkyl phenol-aldehyde (amine) resins; α-Olefin-maleic anhydride co-polymers and grafted polymers including half ester/amide and full ester/amide derivatives; and combinations thereof; and a second component which is a synergist and selected from the group consisting of polyamines, amidoamines, imidazolines, and combinations thereof.
Abstract:
A hydrocarbon fuel antioxidant comprises a compound having a following molecular structure R1-(CnHm)-R2, a precursor or a derivative of the compound: wherein n and m are positive integers; —(CnHm)— group is a straight chain molecule segment formed by covalent linkage of carbon atoms which are more than or equal to 3 and less than or equal to 50; ,R1 and R2 comprise an aromatic ring or carboxylic acid or hydroxyl radical or alkyl group; the aromatic ring group may either be a single ring or polycyclic, and may also be a heterocycle containing oxygen or nitrogen, which may be provided with or not provided with a substituent group; the antioxidant contains more than one linear chain or ring conjugated bond formed by conjugated double bonds; the ring conjugated double bonds are located on the aromatic ring at the end part; the linear chain conjugated double bonds are located on a carbon chain in the middle; and the antioxidant has a prominent absorption peak in a 250-400 nm ultraviolet wavelength range. The hydrocarbon fuel antioxidant comprises carotinoid, vitamin A or vitamin E. The invention further provides applications and a method of application of the antioxidant. The antioxidant can promote the ultraviolet light stabilization effect of the fuels, but also can promote the oxygen stabilization effect of the fuels, and particularly can promote the combustion efficiency of the fuels and reduce the emission of contaminants when the antioxidant is together used with such additives as cetane number improver and octane number improver.
Abstract translation:烃燃料抗氧化剂包含具有以下分子结构R1-(CnHm)-R2的化合物,化合物的前体或衍生物:其中n和m是正整数; - (C n H m) - 基团是通过大于或等于3并且小于或等于50的碳原子的共价连接形成的直链分子链段; ,R 1和R 2包含芳环或羧酸或羟基或烷基; 芳环基可以是单环或多环,并且也可以是含有氧或氮的杂环,其可以具有或不具有取代基; 抗氧化剂含有多于一个由共轭双键形成的直链或环共轭键; 环共轭双键位于端部的芳环上; 线性链共轭双键位于中间的碳链上; 并且抗氧化剂在250-400nm紫外线波长范围内具有显着的吸收峰。 烃类燃料抗氧化剂包括类胡萝卜素,维生素A或维生素E.本发明还提供了抗氧化剂的应用和应用的方法。 抗氧化剂可以促进燃料的紫外光稳定作用,而且可以促进燃料的氧稳定化作用,特别是可以提高燃料的燃烧效率,并且当抗氧化剂与这种添加剂一起使用时减少污染物的排放 作为十六烷值改进剂和辛烷值改进剂。
Abstract:
A diesel fuel additive composition, a fuel containing the fuel additive, a method for improving diesel engine performance using the additive. The diesel fuel additive includes a reaction product of (a) a hydrocarbyl-substituted acylating agent and (b) a reactant selected from the group consisting of a nitrogen-containing compound, a hydroxyl-containing compound, and water that provides a reaction product selected from the group consisting (1) a mono-amide/mono-acid or metal free mono-acid salt thereof, (2) a diacid or metal free diacid salt thereof, and (3) mono-ester/mono-acid or metal free mono-acid salt thereof. The reaction product includes at least about 10 molar percent acid groups based on total moles of the reaction product.
Abstract:
Certain UV filter compounds improve the combustion properties of diesel fuel compositions, and in particular modify the ignition delay and/or modify the burn period and/or modify the peak pressure and/or increase the cetane number of the liquid fuel composition. A liquid fuel composition is provided containing: (a) a diesel base fuel suitable for use in an internal combustion engine; and (b) in the range of 10 ppmw to 2 wt %, by weight of the liquid fuel composition, of one or more organic UV filter compounds selected from imidazoles, triazines, triazones and triazoles, and mixtures thereof.
Abstract:
A liquid fuel composition comprising:(a) a gasoline base fuel suitable for use in an internal combustion engine; (b) one or more organic UV filter compounds selected from imidazoles, triazines, triazone and triazoles, and mixtures thereof. The liquid fuel composition provides benefits in terms of improved acceleration and/or power output of an internal combustion engine fuelled by said fuel as well as an increase in flame speed.
Abstract:
The present invention relates to the use of at least one heterocyclic compound of the formula (I) in which R is H or C1-C3-alkyl as a frictional wear-reducing additive in fuel compositions; to corresponding additized fuel compositions and their preparation; and to additive concentrates which comprise such compounds.
Abstract:
An additive composition for use in a diesel fuel formulation, comprising a cetane improver in an inclusion complex with a modified cyclodextrin of formula (I): wherein n is an integer from 6 to 20, and R1, R2 and R3 are each independently selected from hydrogen, optionally substituted alkyl, optionally substituted aryl and carbonyl, provided that R1, R2 and R3 are not all hydrogen. Also provided is a diesel fuel formulation comprising the additive composition, and the use of a modified cyclodextrin (I) as a vehicle for a cetane improver in an additive composition or diesel fuel formulation.
Abstract:
An additive composition improves the stability and the engine performances of gas oils, including gas oils of the non-road type in compliance with the decree of 10 Dec. 2010, including: (a) at least one metal deactivator or chelating agent, (b) at least one antioxidant of the hindered phenol type (alkylphenol), (c) at least one dispersant and/or detergent, (d) at least one metal passivator, where the compositions include improved properties, in particular relative to the oxidation resistance, storage stability, thermal stability, reduction in fouling of the injectors, reduction in loss of power, reduction in the tendency of the filters to clog.