Diesel detergent without a low molecular weight penalty

Patent metadata

Field	Value
Publication number	US-10669496-B2
Application number	US-201816223485-A
Country	US
Kind code	B2
Filing date	Dec 18, 2018
Priority date	Oct 23, 2012
Publication date	Jun 2, 2020
Grant date	Jun 2, 2020

Abstract

The composition of the present invention related to a quaternary ammonium salt detergent and the use of such quaternary ammonium salt detergents in a fuel composition to reduce diesel injector deposits and remove or clean up existing deposits on the diesel injectors.

First claim

What is claimed is:

1. A composition comprising a quaternary ammonium salt, wherein the quaternary ammonium salt comprises the reaction product of:
a) a compound comprising a non-quaternized amide and/or ester detergent having a number average molecular weight of from about 100 to about 500 and a compound having an oxygen or nitrogen atom capable of condensing with said acid where said compound contains a tertiary amino group and wherein the amide/ester group has the formula:

wherein: R 21 is a hydrocarbyl group containing from 1 to 3 carbon atoms; R 22 is a hydrocarbyl group containing from 1 to 3 carbon atoms; R 23 is a hydrocarbylene group containing from 1 to 3 carbon atoms; R 24 is a hydrocarbyl group containing from 7 to 36 carbon atoms; and Y is NH or O; and

b) a quaternizing agent suitable for converting the tertiary amino group of compound (a) to a quaternary nitrogen, said quaternizing agent comprising hydrocarbyl epoxides

and wherein a) and b) are reacted without a separate acid component.

2. The composition of claim 1 , wherein the non-quaternized amide and/or ester detergent is quaternized in the present of a protic solvent.

3. A diesel fuel comprising the composition of claim 1 .

4. The diesel fuel of claim 3 , wherein the diesel fuel is ultra-low sulfur diesel fuel.

5. The diesel fuel of claim 3 , wherein the quaternary ammonium salt is present from about 10 to about 500 ppm.

6. A method of minimizing creation of internal diesel injector deposits while additionally reducing the level of pre-existing internal diesel injector deposits comprising the step of supplying to a diesel engine a diesel fuel composition comprising (A) diesel fuel; and (B) a composition according to claim 1 .

7. The method of claim 6 wherein the diesel engine comprises common rail diesel injectors.

8. A gasoline fuel comprising the composition of claim 1 .

Assignees

• Lubrizol Corp

Inventors

• Bush James H
• Barbour Robert H
• Moreton David J
• Greenfield Hannah
• Stevenson Paul R
• Arters David C

Classifications

• C10L1/2222

  (cyclo)aliphatic amines; polyamines (no macromolecular substituent 30C); quaternair ammonium compounds; carbamates (C10L1/221 takes precedence) · CPC title

• C10L1/2225

  hydroxy containing (C10L1/221 takes precedence) · CPC title

• C10L1/221 Primary

  compounds of uncertain formula; reaction products where mixtures of compounds are obtained · CPC title

• C07D207/408

  Radicals containing only hydrogen and carbon atoms attached to ring carbon atoms · CPC title

• 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