Additive compositions with a friction modifier and a dispersant

Patent metadata

Field	Value
Publication number	US-9249371-B2
Application number	US-201213725319-A
Country	US
Kind code	B2
Filing date	Dec 21, 2012
Priority date	Dec 21, 2012
Publication date	Feb 2, 2016
Grant date	Feb 2, 2016

Abstract

A lubricating composition comprising a major amount of base oil and a minor amount of an additive package, wherein the additive package comprises
(A) a friction modifier component selected from:
(a) one or more a reaction products of an alcohol with a compound of the formula IV:

wherein R is a linear or branched, saturated, unsaturated, or partially saturated hydrocarbyl group having about 8 to about 22 carbon atoms; and
(b) one or more compounds of the Formulae II-III:

wherein R is as defined above and R 2 and R 3 are independently selected from hydrogen, C 1 -C 18 hydrocarbyl groups, and C 1 -C 18 hydrocarbyl groups containing one or more heteroatoms; and

wherein R is as defined above; and X is an alkali metal, alkaline earth metal or ammonium cation and n is the valence of cation X; and
(B) at least one dispersant.

First claim

What is claimed is:

1. An engine oil composition comprising a major amount of a base oil having at least 90% saturates and being selected from a Group II, Group III, Group IV and Group V base oil and mixtures thereof, and a minor amount of an additive package, wherein the additive package comprises:
(A) a friction modifier component selected from one or more compounds of the Formulae I-III:

wherein R is a linear or branched, saturated, unsaturated, or partially saturated hydrocarbyl having about 8 to about 22 carbon atoms and R 1 is a hydrocarbyl having from about 1 to about 8 carbon atoms, or a C 1 -C 8 hydrocarbyl group containing one or more heteroatoms;

wherein R is a linear or branched, saturated, unsaturated, or partially saturated hydrocarbyl having about 8 to about 22 carbon atoms and R 2 and R 3 are independently selected from hydrogen, C 1 -C 18 hydrocarbyl groups, and C 1 -C 18 hydrocarbyl groups containing one or more heteroatoms; and

wherein R is a linear or branched, saturated, unsaturated, or partially saturated hydrocarbyl having about 8 to about 22 carbon atoms; and X is an alkali metal, alkaline earth metal, or ammonium cation and n is the valence of cation X; and
(B) at least one dispersant selected from the group consisting of succinimide dispersants made from a polyamine, Mannich dispersants and mixtures thereof; and
wherein the composition is adapted for use as an engine oil, the engine oil composition has a phosphorus content of 50-1000 ppm, the engine oil composition contains from 0.1 to 2.0 wt. % of the friction modifier component (A), and when the friction modifier component is a compound of the formula (III), the engine oil composition comprises a major amount of a base oil having at least 90% saturates and being selected from a Group II, Group III and Group IV base oil and mixtures thereof.

2. The engine oil composition of claim 1 , wherein the additive package comprises at least one compound of the formula I.

3. The engine oil composition of claim 1 , wherein the additive package comprises at least one compound of the formula II.

4. The engine oil composition of claim 1 , wherein the additive package comprises at least one salt of the formula III.

5. The engine oil composition of claim 1 , wherein the additive package comprises at least two different compounds independently selected from compounds of the formulae I-III.

6. The engine oil composition of claim 1 , wherein R has from about 10 to about 20 carbon atoms.

7. The engine oil composition of claim 1 , wherein R has from about 12 to about 18 carbon atoms.

8. The engine oil composition of claim 1 , wherein R 1 is hydrocarbyl group having from about 1 to about 8 carbon atoms.

9. The engine oil composition of claim 3 , wherein R 2 and R 3 are independently selected from hydrogen, C 1 -C 18 hydrocarbyl groups, and C 1 -C 18 hydrocarbyl groups containing one or more heteroatoms.

10. The engine oil composition of claim 3 , wherein R 2 and R 3 are independently selected from hydrogen and C 4 -C 8 hydrocarbyl groups.

11. The engine oil composition of claim 4 , wherein the one or more compounds of the formula III are salts of one or more cations selected from sodium, lithium, potassium, calcium, magnesium, and an amine.

12. The engine oil composition of claim 1 , wherein the additive package further comprises at least one additive selected from the group consisting of antioxidants, antifoam agents, molybdenum-containing compounds, titanium-containing compounds, phosphorus-containing compounds, viscosity index improvers, pour point depressants, and diluent oils.

13. The engine oil composition of claim 1 , wherein the at least one dispersant comprises a polyalkylene succinimide.

14. The engine oil composition of claim 1 , wherein the at least one dispersant comprises a polyisobutylene succinimide prepared from a polyisobutylene having a number average molecular weight of greater than 900.

15. The engine oil composition of claim 1 , wherein the at least one dispersant comprises a polyisobutylene succinimide prepared from a polyisobutylene having a number average molecular weight of from about 1200 to about 5000.

16. The engine oil composition of claim 13 , wherein the at least one polyalkylene succinimide is post-treated with one or more compounds selected from boron compounds, anhydrides, aldehydes, ketones, phosphorus compounds, epoxides, and carboxylic acids.

17. The engine oil composition of claim 16 , wherein the at least one polyisobutylene succinimide is post-treated with a boron compound and wherein the boron content of the engine oil is from about 200 to 500 ppm boron.

18. The engine oil composition of claim 1 , wherein the at least one dispersant comprises a polyisobutylene succinimide prepared from a polyisobutylene having greater than 50% terminal vinylidene.

19. The engine oil composition of claim 1 , wherein the at least one polyisobutylene succinimide dispersant is derived from an amine selected from trialkyleneaminetetramine and tetralkylene pentamine.

20. The engine oil composition of claim 1 , wherein a total amount of dispersant is less than about 20 wt. % of a total weight of the engine oil.

21. The engine oil composition of claim 20 , wherein the total amount of dispersant is in a range of from 0.1 wt. % to 15 wt. % of a total weight of the engine oil.

22. An engine oil composition comprising a major amount of base oil having at least 90% saturates and being selected from a Group II, Group III, Group IV and Group V base oil and mixtures thereof, and a minor amount of an additive package, wherein the additive package comprises:
(A) one or more amide reaction products of a compound of the formula IV:

wherein R is a linear or branched, saturated, unsaturated, or partially saturated hydrocarbyl group having about 8 to about 22 carbon atoms, and an amine of the formula V:

wherein R 2 , R 3 , and R 4 are independently selected from hydrogen, C 1 -C 18 hydrocarbyl groups and hydrocarbons containing C 3 -C 12 hydrocarbyl groups and one or more heteroatoms; and
(B) at least one dispersant selected from the group consisting of succinimide dispersants made from a polyamine, Mannich dispersants and mixtures thereof; and
wherein the composition is adapted for use as an engine oil and the engine oil composition has a phosphorus content of 50-1000 ppm and the engine oil composition contains 0.1 to 2 wt. % of the friction modifier component (A).

23. An engine oil composition comprising a major amount of a base oil having at least 90% saturates and being selected from a Group II, Group III, Group IV and Group V base oil and mixtures thereof, and a minor amount of an additive package, wherein the additive package comprises:
(A) one or more salts that are reaction products of one or more compounds of the formula IV:

Assignees

• Afton Chemical Corp

Inventors

• Loper John T
• Styer Jeremy P

Classifications

• C10N2040/25

  Internal-combustion engines · CPC title

• C10N2040/02

  Bearings · CPC title

• C10N2030/56

  Boundary lubrication or thin film lubrication · CPC title

• C10N2010/02

  Groups 1 or 11 · CPC title

• C10N2030/06

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