Composition containing ester compounds and a method of lubricating an internal combustion engine

Patent metadata

Field	Value
Publication number	US-9765275-B2
Application number	US-201615277031-A
Country	US
Kind code	B2
Filing date	Sep 27, 2016
Priority date	Feb 18, 2009
Publication date	Sep 19, 2017
Grant date	Sep 19, 2017

Abstract

The invention provides a lubricating composition containing a β-amino compound. The invention further relates to a method of lubricating an internal combustion engine by lubricating the engine with the lubricating composition. The invention further relates to the use of the β-amino carbonyl compound as copper corrosion inhibitors, friction control agents, antiwear and/or extreme pressure agents.

First claim

What is claimed is:

1. A lubricating composition comprising an oil of lubricating viscosity and a β-amino carbonyl compound of formula:

wherein, independently, each variable
X is —HNR 6 or —N(R 6 ) 2 ;
R 1 and R 2 are hydrogen, or an unsubstituted or substituted hydrocarbyl group containing 1 to 30 carbon atoms, with the proviso that R 1 and R 2 are simultaneously not both hydrogen;
R 3 and R 4 are hydrogen, an unsubstituted or substituted hydrocarbyl group containing 1 to 30 carbon atoms, or —C(O)—(O)-Ak, with the proviso that the number of total number of carbon atoms on substituent groups R 1 , R 2 , R 3 , R 4 , R 5 , and R 6 is at least 8;
R 5 is hydrogen or an alkyl group containing 1 to 8 carbon atoms, or R 1 and R 5 are joined to form a cyclic structure;
Ak is an alk(en)yl group containing 1 to 30 carbon atoms; and
R 6 is an alk(en)yl chain containing 1 to 30 carbon atoms.

2. The lubricating composition of claim 1 , wherein one of R 1 or R 2 is hydrogen and the other of R 1 or R 2 is a hydrocarbyl group or substituted hydrocarbyl group selected from the group consisting of
(i) an acyl-substituted hydrocarbyl group with no primary amines,
(ii) an optionally substituted alk(en)yl chain containing 1 to 30 carbon atoms; and
(iii) an ether-substituted hydrocarbyl group containing 1 to 30 carbon atoms.

3. The lubricating composition of claim 1 , wherein each of R 1 are R 2 are a hydrocarbyl group or substituted hydrocarbyl group selected from the group consisting of
(i) an acyl-substituted hydrocarbyl group with no primary amines,
(ii) an optionally substituted alk(en)yl chain containing 1 to 30 carbon atoms; and
(iii) an ether-substituted hydrocarbyl group containing 1 to 30 carbon atoms.

4. The lubricating composition of claim 1 further comprising an amide, ester or imide derivative of a hydroxy-carboxylic acid, or mixtures thereof.

5. The lubricating composition of claim 4 , wherein the amide, ester or imide derivative of a hydroxy-carboxylic acid is a compound derived from tartaric acid or citric acid.

6. The lubricating composition of claim 4 , wherein the amide, ester or imide derivative of a hydroxy-carboxylic acid is a compound derived from tartaric acid.

7. The lubricating composition of claim 4 , wherein the β-amino carbonyl compound is present at 0.05 to 5 wt % of the lubricating composition, and (b) the amide, ester or imide derivative of a hydroxy-carboxylic acid is present at 0.05 to 5 wt % of the lubricating composition.

8. The lubricating composition of claim 4 , wherein the β-amino carbonyl compound is present at 0.075 to 0.3 wt % of the lubricating composition, and (b) the amide, ester or imide derivative of a hydroxy-carboxylic acid is present at 0.075 to 0.3 wt % of the lubricating composition.

9. The lubricating composition of claim 1 , wherein the lubricating composition is further characterised as having at least one of (i) a sulphur content of 0.8 wt % or less, (ii) a phosphorus content of 0.2 wt % or less, or (iii) a sulphated ash content of 2 wt % or less.

10. The lubricating composition of claim 1 , wherein the lubricating composition is characterised as having (i) a sulphur content of 0.5 wt % or less, (ii) a phosphorus content of 0.1 wt % or less, and (iii) a sulphated ash content of 1.5 wt % or less.

11. The lubricating composition of claim 1 further comprising at least one of a friction modifier, a viscosity modifier, an antioxidant, an overbased detergent, a succinimide dispersant, or mixtures thereof.

12. The lubricating composition of claim 11 , wherein the friction modifier is selected from the group consisting of long chain fatty acid derivatives of amines, esters, or epoxides; fatty imidazolines; amine salts of alkylphosphoric acids; fatty alkyl tartrates; fatty alkyl tartrimides; and fatty alkyl tartramides.

13. The lubricating composition of claim 1 further comprising a phosphorus-containing antiwear agent.

14. The lubricating composition of claim 1 further comprising a molybdenum compound.

15. The lubricating composition of claim 14 , wherein the molybdenum compound is selected from the group consisting of molybdenum dialkyldithiophosphates, molybdenum dithiocarbamates, amine salts of molybdenum compounds, and mixtures thereof.

16. The lubricating composition of claim 14 , wherein the molybdenum compound provides 5 ppm to 300 ppm of molybdenum.

17. The lubricating composition of claim 1 further comprising an overbased detergent, wherein the overbased detergent is selected from the group consisting of phenates, sulphur containing phenates, sulphonates, salixarates, salicylates, and mixtures thereof.

18. A method for lubricating an engine oil comprising supplying to the engine a lubricating composition of claim 1 .

Assignees

• Lubrizol Corp

Inventors

• Gieselman Matthew D
• Kocsis Jody A

Classifications

• C10N2040/25

  Internal-combustion engines · CPC title

• C10N2030/06

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

• C10M2223/045

  Metal containing thio derivatives · CPC title

• C10N2030/45

  Ash-less or low ash content · CPC title

• C10M2207/24

  Epoxidised acids; Ester derivatives thereof · CPC title