Use of a complex ester to reduce fuel consumption

Patent metadata

Field	Value
Publication number	US-10465138-B2
Application number	US-201816017149-A
Country	US
Kind code	B2
Filing date	Jun 25, 2018
Priority date	Oct 24, 2013
Publication date	Nov 5, 2019
Grant date	Nov 5, 2019

Abstract

The use of a complex ester obtainable by esterification reaction between aliphatic linear or branched C 2 - to C 12 -dicarboxylic acids, aliphatic linear or branched polyhydroxy alcohols with 3 to 6 hydroxyl groups, and, as chain stopping agents, aliphatic linear or branched C 1 - to C 30 -monocarboxylic acids or aliphatic linear or branched monobasic C 1 - to C 30 -alcohols, as an additive in a fuel for minimization of power loss in the operation of an internal combustion engine with this fuel.

First claim

The invention claimed is:

1. A method of minimizing power loss in the operation of an internal combustion engine, consisting of:
adding to a fuel a complex ester obtained by an esterification reaction between
(A) at least one aliphatic linear or branched C 2 - to C 12 -dicarboxylic acid,
(B) at least one aliphatic linear or branched polyhydroxy alcohol with 3 to 6 hydroxyl groups, and
(C) as a chain stopping agent
(C1) at least one aliphatic linear or branched C 1 - to C 30 -monocarboxylic acid in case of an excess of component (B), or
(C2) at least one aliphatic linear or branched monobasic C 1 - to C 30 -alcohol in case of an excess of component (A).

2. The method of claim 1 , wherein component (A) is at least one member selected from the group consisting of aliphatic linear C 6 - to C 10 -dicarboxylic acids.

3. The method of claim 1 , wherein component (B) is at least one member selected from the group consisting of glycerin, trimethylolpropane and pentaerythritol.

4. The method of claim 1 , wherein component (C) is at least one member selected from the group consisting of (C1) aliphatic linear or branched C 8 - to C 18 -monocarboxylic acids, and (C2) linear or branched C 8 - to C 18 -alkanols.

5. The method of claim 1 , wherein the complex ester is composed of from 2 to 9 molecule units of component (A) and of from 3 to 10 molecule units of component (B), component (B) being in excess compared with component (A), with remaining free hydroxyl groups of (B) being completely or partly capped with a corresponding number of molecule units of component (C1).

6. The method of claim 1 , wherein the complex ester is composed of from 3 to 10 molecule units of component (A) and of from 2 to 9 molecule units of component (B), component (A) being in excess compared with component (B), with remaining free carboxyl groups of (A) being completely or partly capped with a corresponding number of molecule units of component (C2).

Assignees

• Basf Se

Inventors

• Walter Marc
• Rettemeyer Dirk
• Hansch Markus
• Voelkel Ludwig
• Hahn Bjoern Thomas
• Ecormier Muriel
• Hayden Thomas

Classifications

• C10N2070/00

  Specific manufacturing methods for lubricant compositions · CPC title

• C10N2030/06

  Oiliness; Film-strength; Anti-wear; Resistance to extreme pressure · CPC title

• C10L2270/02

  for internal combustion engines · CPC title

• C10L10/18

  use of detergents or dispersants for purposes not provided for in groups C10L10/02 - C10L10/16 · CPC title

• C10L2270/023

  for gasoline engines · CPC title