The present invention relates to a fuel composition comprising a liquid fuel and a compound of dimer amide quaternary ammonium type. The invention also relates to the use of the compound of dimer amide quaternary ammonium type as a detergent additive in a liquid fuel for internal combustion engine.

The present invention relates to a fuel composition comprising a liquid fuel and a compound of dimer amide quaternary ammonium type. The invention also relates to the use of the compound of dimer amide quaternary ammonium type as a detergent Q additive in a liquid fuel for internal combustion engine.

Disclosed are organomodified polysiloxanes, compositions, in particular fuel compositions, that include these organomodified polysiloxanes, and the use of the organomodified polysiloxanes for the defoaming of fuels.

Disclosed are organomodified polysiloxanes, compositions, in particular fuel compositions, that include these organomodified polysiloxanes, and the use of the organomodified polysiloxanes for the defoaming of fuels.

Described herein are fuel performance additives, fuels including such additive, methods of improving the demulsiliblity of fuels using fuel performance additives, and the use of a fuel performance additive to improve the demulsiliblity of fuel where such fuels are gasoline or diesel and further include a quaternary ammonium salt obtained from at least the reaction of a nitrogen containing compound having at least a tertiary amino group and a quaternizing agent.

Disclosed are cloud point depressants and methods of making and using them. The disclosed cloud point depressants comprise copolymers of a maleic moiety polymerized with alpha olefins and then contacted with an aliphatic tertiary amine to provide a cloud depressant reaction product. When the disclosed reactions products are added to middle distillate fuels or blends of middle distillate fuels with biodiesel, the cloud point depressants inhibit the precipitation of waxes and/or biowaxes in the fuels and the fuels exhibit reduced precipitation, gelling, and/or crystallization when subjected to low or cold temperatures.

Described herein are fuel performance additives, fuels including such additive, methods of improving the demulsibility of fuels using fuel performance additives, and the use of a fuel performance additive to improve the demulsibility of fuel where such fuels are gasoline or diesel and further include a quaternary ammonium salt obtained from at least the reaction of a nitrogen containing compound having at least a tertiary amino group and a quaternizing agent.

Use of a hydrocarbyl-substituted dicarboxylic acid for improving or boosting the separation of water from fuel oils and gasoline fuels which comprise additives with detergent action. A Fuel additive concentrate comprising the said hydrocarbyl-substituted dicarboxylic acid, certain additives with detergent action and optionally other customary additives and solvents or diluents.

The invention relates to a copolymer comprising: at least one motif of the following formula (I), and motifs of the following formula (II), between 5 and 95 mol % of the groups R of the motifs of formula (II) comprising at least one quaternary amino group. The invention also relates to the production of such a copolymer, and to the use thereof as a detergent additive and/or demulsifying additive in a liquid fuel for an internal combustion engine.

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The invention relates to a composition of additives for fuel, comprising: (a) one or more copolymer(s) comprising the following units of formulae (I) and units of formula (IIa): R representing a hydrocarbon-based chain substituted with at least one amino group comprising at least one quaternary ammonium or iminium function, and (b) one or more copolymer(s) comprising units of formulae (I) and units of formula (IIb): R representing a hydrocarbon-based chain substituted with at least one amino group comprising at least one primary, secondary or tertiary amine function or imine function. The invention also relates to the use of such a composition as a detergent additive and/or demulsifying additive in a liquid fuel for an internal combustion engine.

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