Abstract: The present invention relates to the use of quaternized alkylamine nitrogen compounds as a fuel additive and lubricant additive, such as, more particularly, as a detergent additive; for reduction or prevention of deposits in the injection systems of direct injection diesel engines, especially in common rail injection systems, for reduction of the fuel consumption of direct injection diesel engines, especially of diesel engines with common rail injection systems, and for minimization of power loss in direct injection diesel engines, especially in diesel engines with common rail injection systems; and as an additive for gasoline fuels, especially for operation of DISI engines.

Abstract: The present invention relates to the use of additives with detergent action selected from: (i) compounds with moieties derived from succinic anhydride and having hydroxyl and/or amino and/or amido and/or imido groups; (ii) nitrogen compounds quaternized in an acid-free manner, obtainable by addition of a compound comprising an oxygen- or nitrogen-containing group reactive with an anhydride and additionally a quaternizable amino group onto a polycarboxylic anhydride compound and subsequent quaternization; (iii) polytetrahydrobenzoxazines and bistetrahydrobenzoxazines for further increasing the cetane number of fuel oils which comprise cetane number improvers; furthermore, it relates to a fuel additive concentrate consisting of additives (i) to (iii), cetane number improvers, organic diluents or solvents and possibly customary co-additives.

Abstract: The present invention relates to novel quaternized polyetheramines and to the preparation thereof. The present invention further relates to the use of these compounds as a fuel and lubricant additive. More particularly, the invention relates to the use of these quaternized nitrogen compounds as a fuel additive for reducing or preventing deposits in the injection systems of direct injection diesel engines, especially in common rail injection systems, for reducing the fuel consumption of direct injection diesel engines, especially of diesel engines with common rail injection systems, and for minimizing power loss in direct injection diesel engines, especially in diesel engines with common rail injection systems. The invention also provides additive packages comprising these polyetheramines; and fuels and lubricants additized therewith.

Abstract: The use of imidazolium salts (I) where R1 and R3 are each independently an organic radical having 1 to 3000 carbon atoms, R2, R4 and R5 are each independently hydrogen or an organic radical having 1 to 3000 carbon atoms, X is an anion and n is the number 1, 2 or 3 as additives for fuels, especially as detergent additives for diesel fuels, as wax antisettling additives for middle distillate fuels and as lubricity improvers, and for improving the use properties of mineral and synthetic nonaqueous industrial fluids.

Abstract: The present invention relates to novel quaternized nitrogen compounds, to the preparation thereof and to the use thereof as a fuel and lubricant additive, more particularly as a detergent additive; to additive packages which comprise these compounds; and to fuels and lubricants thus additized. The present invention further relates to the use of these quaternized nitrogen compounds as a fuel additive for reducing or preventing deposits in the injection systems of direct-injection diesel engines, especially in common-rail injection systems, for reducing the fuel consumption of direct-injection diesel engines, especially of diesel engines with common-rail injection systems, and for minimizing power loss in direct-injection diesel engines, especially in diesel engines with common-rail injection systems.

Abstract: C5- to C15-alkanols are suitable for improving the defoamer action of a silicon-containing anti-foam in fuel oils, especially in biofuel oils, which comprise at least one additive with detergent action. Such alkanols are used in additive concentrates which also comprise aromatic hydrocarbons or hydrocarbon mixtures having a boiling point of 100 to 250° C. or C5- to C12-alkyl nitrates, and also silicon-containing antifoams, additives with detergent action and optionally commercial dehazers.

Abstract: The use of mixtures of (A) aliphatic saturated or unsaturated monocarboxylic acids having 12 to 24 carbon atoms or the dimerization or trimerization products thereof, which may be present in the form of free carboxylic acids and/or in the form of ammonium salts, amides, esters and/or nitriles, and (B) polycyclic hydrocarbon compounds which are obtainable from distillation residues of natural oils, which have been extracted from tree resins, for increasing the cetane number of fuel oils which comprise at least one additive with detergent action and at least one cetane number improver, the mixtures of components (A) and (B) being used in a concentration of 10 to 500 ppm by weight, based on the total amount of the fuel oil.

Abstract: Polytetrahydrobenzoxazines and bistetrahydrobenzoxazines, obtainable by (A) reacting at least one diamine of the formula H2N-A-NH2 with a C1- to C12-aldehyde and a C1- to C8-alkanol at 20 to 80° C. with elimination and removal of water, (B) reacting the condensation product from (A) with a phenol which bears a long-chain substituent at 30 to 120° C., and optionally (C) heating the reaction product from (B) to 125 to 280° C. The resulting polytetrahydrobenzoxazines and bistetrahydrobenzoxazines are suitable as fuel or lubricant additives, especially as detergent additives for diesel fuels.

Abstract: The use of the reaction product formed from a hydrocarbyl-substituted dicarboxylic acid or anhydride thereof and a nitrogen compound I or a salt thereof as an additive in a fuel for reducing fuel consumption in gasoline engines.

Abstract: The present invention relates to novel acid-free quaternized nitrogen compounds, to the preparation thereof and to the use thereof as a fuel and lubricant additive, more particularly as a detergent additive, as a wax antisettling additive (WASA) or as an additive for reducing internal diesel injector deposits (IDID); to additive packages which comprise these compounds; and to fuels and lubricants thus additized. The present invention further relates to the use of these acid-free quaternized nitrogen compounds as a fuel additive for reducing or preventing deposits in the injection systems of direct-injection diesel engines, especially in common-rail injection systems, for reducing the fuel consumption of direct-injection diesel engines, especially of diesel engines with common-rail injection systems, and for minimizing power loss in direct-injection diesel engines, especially in diesel engines with common-rail injection systems.

Abstract: A quaternized copolymer obtainable by: (A) copolymerization of straight-chain, branched or cyclic, ethylenically unsaturated C2 to C100 hydrocarbons, which may bear oxygen- or nitrogen-functional substituents which cannot be reacted with amines to give amides or imides or with alcohols to give esters, with ethylenically unsaturated C3- to C12-mono- or dicarboxylic acids or acid derivatives, which can be reacted with amines to give amides or imides or with alcohols to give esters, to give a copolymer with a number-average molecular weight of 500 to 20 000; (B) partial or full amidation or imidation or esterification of the carboxylic acid functions by reacting them with oligoamines having 2 to 6 nitrogen atoms or alcoholamines, each of which comprises primary or secondary nitrogen atom or a hydroxyl group and a quaternizable tertiary nitrogen atom; (C) partial or full quaternization of the tertiary nitrogen atom with a quaternizing agent.

Abstract: Quaternized terpolymer formed from (A) ethylene, (B) C2-C14-alkenyl esters of one or more aliphatic C1-C20-monocarboxylic acids or C1-C24-alkyl esters of acrylic acid or of methacrylic acid and (Cq) ethylenically unsaturated monomers which comprise at least one tertiary nitrogen atom which is partly or fully in quaternized form. The quaternized terpolymer is suitable as a fuel additive for reducing or preventing deposits, for reducing fuel consumption and for minimizing power loss in direct-injection diesel engines, especially in diesel engines with common-rail injection systems.

Abstract: The present invention relates to a process for preparing aqueous formulations (A) comprising at least one polyaromatic compound bearing acid groups, in particular a sulfonated polyaromatic compound, and also aqueous formulations (A) which have been prepared by the process of the invention. Furthermore, the present invention relates to a process for preparing dried formulations (B) by removing the water from the aqueous formulations (A) and also the dried formulations (B) themselves. The present invention further provides a formulation (C) comprising the dried formulation (B) of the invention and water or the formulation A of the invention and a water-comprising formulation (D) comprising the aqueous formulation (A) or the formulation (C) of the invention and additionally at least 2% by weight of an organic solvent. Furthermore, the present invention relates to dry formulations (E) which are obtained by removing water and solvent from the water-comprising formulations (D) of the invention.