Use of a hydrocarbyl-substituted dicarboxylic acid for improving or boosting the separation of water from fuel oils and gasoline fuels

Patent metadata

Field	Value
Publication number	US-10174269-B2
Application number	US-201414903095-A
Country	US
Kind code	B2
Filing date	Jul 2, 2014
Priority date	Jul 12, 2013
Publication date	Jan 8, 2019
Grant date	Jan 8, 2019

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.

First claim

The invention claimed is:

1. 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 quaternizable amino group onto a polycarboxylic anhydride compound and subsequent quaternization, as an additive with a detergent action, and
(C) as an additive component, an alkoxylated phenol formaldehyde resin, as a dehazer.

2. The method of claim 1 , wherein the fuel oil further comprises as an additive component (D) at least one cetane number improver.

3. The method of claim 1 , wherein the fuel oil consists of:
(a) 0.1 to 100% by weight of at least one biofuel oil based on one or more fatty acid esters, and
(b) 0 to 99.9% by weight of one or more middle distillates of fossil origin and/or of synthetic origin and/or of vegetable and/or animal origin, which are essentially hydrocarbon mixtures and are free of fatty acid esters.

4. The method of claim 1 , wherein the fuel oil consist of one or more middle distillates of fossil origin, synthetic origin, vegetable, and/or animal origin, which are essentially hydrocarbon mixtures and are free of fatty acid esters.

5. The method of claim 1 , wherein the fuel oil or gasoline fuel has at least one of the following properties:
(α) a sulfur content of less than 50 mg/kg;
(β) a maximum content of 8% by weight of polycyclic aromatic hydrocarbons; and
(γ) a 95% distillation point (vol/vol) at not more than 360° C.

6. 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
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 subsequent quaternization;

(C) 0 to 5% by weight of an alkoxylated phenol formaldehyde resin, 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.

Assignees

• Basf Se

Inventors

• Boehnke Harald
• Voelkel Ludwig
• Walter Marc

Classifications

• C10L1/2383

  Polyamines or polyimines, or derivatives thereof {(poly)amines and imines; derivatives thereof (substituted by a macromolecular group containing 30C) (C10L1/221 takes precedence)} · CPC title

• C10L1/1981

  Condensation polymers of aldehydes or ketones · CPC title

• C10L2230/082

  for anti-foaming · CPC title

• C10L1/143

  mixtures of organic macromolecular compounds with organic non-macromolecular compounds · CPC title

• C10L1/1985

  polyethers, e.g. di- polygylcols and derivatives; ethers - esters · CPC title