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US 10,858,608 B2Granted
Use of a hydrocarbyl-substituted dicarboxylic acid for improving or boosting the separation of water from fuel oils and gasoline fuels
AssigneeBASF SE
InventorsHarald Boehnke, Ludwig Voelkel, Marc Walter
Life of this patent
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Abstract
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.
Claims12
A method of improving separation of water from a fuel oil or a gasoline fuel, the method comprising:
- contacting (A) a polyisobutenylsuccinic acid having a polyisobutenyl substituent comprising 32 to 100 carbon atoms with a fuel oil or a gasoline fuel comprising
- (B) at least one nitrogen compound quaternized in the presence of an acid or in an acid-free manner, obtained by addition of a compound comprising at least one oxygen- or nitrogen-containing group reactive with an anhydride and additionally at least one quatemizable amino group onto a polycarboxylic anhydride compound and by subsequent quaternization, as an additive with a detergent action, and
- (C) as an additive component, an alkoxylation copolymer comprising at least one oxide selected from the group consisting of ethylene oxide, propylene oxide, butylene oxide, and styrene oxide, as a dehazer.
A fuel additive concentrate for a fuel oil, comprising:
- (A) 0.01 to 40% by weight of a polyisobutenylsuccinic acid having a polyisobutenyl substituent comprising 20 to 200 carbon atoms;
- (B) 5 to 40% by weight of at least one additive with detergent action, wherein the at least one additive is selected from the group consisting of
- (i) a compound comprising a moiety derived from succinic anhydride and having a hydroxyl group, amino group, amido, imido group, or a combination thereof;
- (ii) a nitrogen compound quaternized in the presence of an acid or in an acid-free manner, obtained by addition of a compound comprising at least one oxygen- or nitrogen-containing group reactive with an anhydride and additionally at least one quaternizable amino group onto a polycarboxylic anhydride compound and by subsequent quaternization;
- and
- (iii) a polytetrahydrobenzoxazine or a bistetrahydrobenzoxazine;
- (C) 0.01 to 5% by weight of an alkoxylation copolymer comprising at least one oxide selected from the group consisting of ethylene oxide, propylene oxide, butylene oxide, and styrene oxide, as a dehazer;
- (D) 0 to 75% by weight of at least one cetane number improver;
- and
- (E) 0 to 50% by weight of at least one solvent or diluent.
7 more elements
Dependencies are inferred from the claim text.