This invention provides a wax inhibitor composition comprising A) the reaction product obtainable by reaction of i) a carboxylic acid containing an optionally substituted cycloaliphatic hydrocarbyl residue with ii) an alkylene polyamine, B) a polymeric wax inhibitor, and C) an organic solvent.

A composition for scavenging hydrogen sulphide and/or mercaptans in hydrocarbon streams includes a H2S scavenger selected from oxazolidine compounds, triazine and metal-based carboxylate compounds, and a synergistic additive allowing boosting the effect of the H2S scavenger compound.

A quaternary ammonium salt of formula wherein each of R.sup.1, R.sup.2, R.sup.3 and R.sup.4 is independently selected from an optionally substituted alkyl, alkenyl or aryl group having less than 8 carbon atoms and R.sup.5 is hydrogen or an optionally substituted hydrocarbyl group.

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A fuel additive composition has a base fuel; colloidal nanocarbon particles, and a dispersion stabilizer that aids in stably suspending the colloidal nanocarbon particles in the base fuel. This abstract is not to be considered limiting, since other embodiments may deviate from the features described in this abstract.

The disclosure relates to fuel compositions comprising a base fuel, a lubricity modifier, and optional additives, and methods for using same. The base fuel is a middle distillate having a sulfur content of <500 ppm. The lubricity modifier comprises a plant-derived liquid decarboxylated rosin acid and optionally at least one of a fatty acid, a fatty acid derivative, and mixtures thereof. The decarboxylated rosin acid has a flash point of 95-180? C., a density of 0.9 to 1.0 g/cm3 at 20? C., a viscosity of 15 to 60 cSt at 40? C., and an acid value of <50 mg KOH/g. The fuel compositions have desired tribological properties, such as wear scar diameter, coefficient of friction, and percent film, as well as cloud point performance.

This invention provides a wax inhibitor composition comprising A) the reaction product obtainable by reaction of i) a carboxylic acid containing an optionally substituted cycloaliphatic hydrocarbyl residue with ii) an alkylene polyamine, B) a polymeric wax inhibitor, and C) an organic solvent.

The disclosure relates to fuel compositions comprising a base fuel, a lubricity modifier, and optional additives, and methods for using same. The base fuel is a middle distillate having a sulfur content of <500 ppm. The lubricity modifier comprises a plant-derived liquid decarboxylated rosin acid and optionally at least one of a fatty acid, a fatty acid derivative, and mixtures thereof. The decarboxylated rosin acid has a flash point of 95-180 C., a density of 0.9 to 1.0 g/cm3 at 20 C., a viscosity of 15 to 60 cSt at 40 C., and an acid value of <50 mg KOH/g. The fuel compositions have desired tribological properties, such as wear scar diameter, coefficient of friction, and percent film, as well as cloud point performance.

This invention generally refers to a new generation of fuel additives which can provide catalytic action to improve the combustion process of fossil fuels and to a catalyst among others containing an iron compound combined with an over-based magnesium compound with molecular size particles inside the combustion chamber. Such fuel additive catalysts are particularly useful for fuel oil combustion, natural gas combustion, stationary gas turbines, natural gas-fired reciprocating engines, diesel engines, gasoline engines and all stationary dual-fuel engines.

The present disclosure is directed to fuel compositions comprising a polar based continuous phase comprising a liquid ammonia with a concentration greater than about 81% by v/v of total polar phase; and a non-polar based discontinuous phase comprising one or more of a frozen hydrocarbon, a viscous liquid hydrocarbon, and a liquefied volatile hydrocarbon, wherein the fuel composition has a droplet size ranging from about 100 nm to about 250 m. Further, the disclosure provides for systems and methods for using the fuel compositions.