Abstract

A method of improving the emulsification performance of nonionic alkoxylated surfactants, for example when used as fuel additives. The method involves a) providing a composition comprising at least one nonionic alkoxylated surfactant; and b) prior to the addition of said composition to an aircraft fuel, thermally cycling said composition by (i) chilling the composition from a first temperature to a second temperature that causes metal ions and/or associated ions contained therein to precipitate as ionic salts; (ii) filtering the chilled composition to remove the precipitated ionic salts; and (iii) heating the filtered composition to the first temperature.

IPC Classes  ?

• C10L 1/198 - Macromolecular compounds obtained otherwise than by reactions involving only carbon-to-carbon unsaturated bonds
• C10L 10/14 - Use of additives to fuels or fires for particular purposes for improving low temperature properties

Goods & Services

Chemicals for use in industry, namely chemical additives for fuels; chemical additives for lubricants.

Abstract

15-alkanol ethoxylates which have the highest share in weight in the mixture being at least 1.5 carbon numbers distant from each other, is useful for reducing or eliminating the formation in a liquid hydrocarbon fuel of ice particles having a weight average particle size greater than 1 μm when said liquid hydrocarbon fuel is cooled to temperatures in the range of from 0 to −50° C.

IPC Classes  ?

• C10L 1/32 - Liquid carbonaceous fuels consisting of coal-oil suspensions or aqueous emulsions
• C10L 1/18 - Organic compounds containing oxygen
• C10L 1/14 - Organic compounds
• C10L 1/182 - Organic compounds containing oxygen containing hydroxy groupsSalts thereof
• C10L 1/198 - Macromolecular compounds obtained otherwise than by reactions involving only carbon-to-carbon unsaturated bonds
• C10L 1/222 - Organic compounds containing nitrogen containing at least one carbon-to-nitrogen single bond

Abstract

A method of improving the emulsification performance of nonionic alkoxylated surfactants, for example when used as fuel additives. The method involves a) providing a composition comprising at least one nonionic alkoxylated surfactant; and b) prior to the addition of said composition to an aircraft fuel, thermally cycling said composition by (i) chilling the composition from a first temperature to a second temperature that causes metal ions and/or associated ions contained therein to precipitate as ionic salts; (ii) filtering the chilled composition to remove the precipitated ionic salts; and (iii) heating the filtered composition to the first temperature.

IPC Classes  ?

• C10L 1/198 - Macromolecular compounds obtained otherwise than by reactions involving only carbon-to-carbon unsaturated bonds
• C10L 10/14 - Use of additives to fuels or fires for particular purposes for improving low temperature properties
• C07C 41/34 - SeparationPurificationStabilisationUse of additives
• C07C 43/11 - Polyethers containing —O—(C—C—O—)n units with 2 ≤ n ≤ 10
• C08G 65/30 - Post-polymerisation treatment, e.g. recovery, purification, drying
• C11D 1/72 - Ethers of polyoxyalkylene glycols

Abstract

The formation in a liquid hydrocarbon fuel of ice particles having a weight average particle size greater than 1 μm when said liquid hydrocarbon fuel is cooled to temperatures in the range of from 0 to −50° C. can be reduced or eliminated by use of at least one surfactant that is capable of dispersing water in said liquid hydrocarbon fuel to provide a stable clear water-in-oil microemulsion wherein the droplet size of the dispersed water phase is no greater than 0.25 μm.

IPC Classes  ?

• C10L 1/32 - Liquid carbonaceous fuels consisting of coal-oil suspensions or aqueous emulsions
• C10L 1/14 - Organic compounds
• C10L 10/14 - Use of additives to fuels or fires for particular purposes for improving low temperature properties
• C10L 1/12 - Inorganic compounds
• C10L 1/182 - Organic compounds containing oxygen containing hydroxy groupsSalts thereof
• C10L 1/185 - EthersAcetalsKetalsAldehydesKetones
• C10L 1/198 - Macromolecular compounds obtained otherwise than by reactions involving only carbon-to-carbon unsaturated bonds
• C10L 1/224 - AmidesImides

Abstract

A liquid concentrate comprising essentially: (A) 0.1 to 10 wt.% of one or more amphoteric emulsifying agents; (B) 30 to 95 wt.% of one or more nonionic alkoxylated surfactants; (C) 0 to 20 wt.% of one or more glycol-based solubilizers; and (D) 0 to 65 wt.% of one or more organic solvents; wherein component (B) comprises a mixture of C6-C15 -alkanol ethoxylates with different carbon numbers for the alkanol unit species, the carbon numbers for the two C6-C15 -alkanol ethoxylates which have the highest share in weight in the mixture being at least 1.5 carbon numbers distant from each other, is useful for reducing or eliminating the formation in a liquid hydrocarbon fuel of ice particles having a weight average particle size greater than 1 µm when said liquid hydrocarbon fuel is cooled to temperatures in the range of from 0 to -50°C.

IPC Classes  ?

• C10L 1/14 - Organic compounds

Abstract

The formation in a liquid hydrocarbon fuel of ice particles having a weight average particle size greater than 1 μm when said liquid hydrocarbon fuel is cooled to temperatures in the range of from 0 to -50°C can be reduced or eliminated by use of at least one surfactant that is capable of dispersing water in said liquid hydrocarbon fuel to provide a stable clear water-in-oil microemulsion wherein the droplet size of the dispersed water phase is no greater than 0.25 μm.

IPC Classes  ?

• C10L 1/12 - Inorganic compounds
• C10L 1/14 - Organic compounds
• C10L 10/14 - Use of additives to fuels or fires for particular purposes for improving low temperature properties

Abstract

6)alkyl betaine, is useful as a fuel, coolant or lubricant. In another aspect the present invention provides one or more stable, clear, water-in-fuel microemulsion-forming surfactants may be used in a liquid fuel or oil which is immiscible with water to: a) scavenge free-water which exists in or is introduced into the liquid fuel or oil thereby to render or retain the liquid fuel or oil in a usable state; and/or b) inhibit the growth of aquatic micro-organisms in the liquid fuel or oil when the fuel or oil becomes contaminated with free-water thereby to retain the liquid fuel or oil in a usable state.

IPC Classes  ?

• C10M 133/06 - Amines, e.g. polyalkylene polyaminesQuaternary amines having amino groups bound to acyclic or cycloaliphatic carbon atoms
• C10M 173/00 - Lubricating compositions containing more than 10% water
• B01F 17/16 - Amines or polyamines
• C10L 1/32 - Liquid carbonaceous fuels consisting of coal-oil suspensions or aqueous emulsions

Abstract

b) inhibit the growth of aquatic micro-organisms in the liquid fuel or oil when the fuel or oil becomes contaminated with free-water thereby to retain the liquid fuel or oil in a usable state.

IPC Classes  ?

• C10L 1/18 - Organic compounds containing oxygen
• C10L 1/22 - Organic compounds containing nitrogen