Fuel additives

Patent metadata

Field	Value
Publication number	US-11124720-B2
Application number	US-201816489855-A
Country	US
Kind code	B2
Filing date	Mar 5, 2018
Priority date	Mar 6, 2017
Publication date	Sep 21, 2021
Grant date	Sep 21, 2021

Abstract

Additive compositions comprising (a) a hydroxycarboxylic acid; and (b) a compound derived from a hydrocarbyl-substituted succinic acid or anhydride wherein the ratio of (a) to (b) in the additive composition ranges from 1:9 to 9:1. The additive compositions may be added to a fuel. Methods of reducing wear in an engine comprising operating the engine using a fuel composition have the additive composition therein. The use of an additive composition in a fuel composition to reduce the fuel composition's coefficient of friction or to reduce wear in an engine.

First claim

What is claimed is:

1. A fuel composition comprising gasoline, oxygenate, or mixtures thereof and an additive composition comprising:
(a) a hydroxycarboxylic acid; and
(b) a compound derived from a hydrocarbyl-substituted succinic acid or anhydride (“HSSA compound”),
wherein the ratio of (a) to (b) in said additive composition ranges from 1:9 to 9:1; and
wherein said additive composition is present in an amount of at least 0.1 ppm to 1000 ppm based on a total weight of said fuel composition.

2. The additive composition of claim 1 , wherein said additive composition further comprises (c) an organic solvent.

3. The additive composition of claim 2 , wherein said organic solvent comprises at least one of 2-ethylhexanol, naphtha, dimethylbenzene, or mixtures thereof.

4. The additive composition of claim 1 , wherein at least a portion of the HSSA compound has the formula (I):

wherein R 1 is a C 1 to C 50 linear or branched hydrocarbyl group; at least one of R 2 and R 3 is present and is a hydrocarbyl amine group or a C 1 to C 5 hydrocarbyl group, and the other of R 2 or R 3 , if present, is a hydrogen or a C 1 to C 5 hydrocarbyl group.

5. The additive composition of claim 1 , wherein at least a portion of the HSSA compound has the formula (II):

wherein R 1 is a C 1 to C 50 linear or branched hydrocarbyl group; R 4 is a C 1 to C 5 linear or branched hydrocarbyl group; and R 5 and R 6 are independently hydrogen or a C 1 to C 4 linear or branched hydrocarbyl group.

6. The additive composition of claim 1 , wherein at least a portion of the HSSA compound has the formula (III):

wherein R 1 is a C 1 to C 50 linear or branched hydrocarbyl group; and R 7 is a C 1 to C 5 hydrocarbyl group.

7. The additive composition of claim 1 , wherein at least a portion of said hydroxycarboxylic acid has the formula (IV):

wherein R 8 is hydrogen or a C 1 to C 20 hydrocarbyl group; R 9 is a C 1 to C 20 hydrocarbyl group; and n is a number from 1 to 8.

8. The additive composition of claim 1 , wherein said hydroxycarboxylic acid comprises at least one polyhydroxycarboxylic acid.

9. The additive composition of claim 1 , wherein said hydroxycarboxylic acid comprises at least one of 12-hydroxystearic acid, ricinoleic acid, or mixtures thereof.

10. The fuel composition of claim 1 , wherein said oxygenate is ethanol.

11. A method of reducing wear in and/or increasing the Fuel Economy Index (“FEI”) of an engine, said method comprising operating said engine on the fuel composition of claim 1 .

12. The method of claim 11 , wherein the FEI is increased by at least 0.8%, or at least 1%.

13. The method of claim 11 , wherein said engine is a gasoline direct injection (“GDI”) engine, a port fuel injection (“PFI”) engine, or a combination thereof.

Assignees

• Lubrizol Corp

Inventors

• Bartley Stuart L
• Stevenson Paul R

Classifications

• C10L1/1608

  Well defined compounds, e.g. hexane, benzene · CPC title

• C10L1/1881

  carboxylic group attached to an aliphatic carbon atom · CPC title

• C10L1/1905 Primary

  of di- or polycarboxylic acids · CPC title

• C10L10/06

  for facilitating soot removal · CPC title

• C10L10/08

  for improving lubricity; for reducing wear · CPC title