Additives for lubricants and fuels

• US 7,863,228 B2
• Filed: 03/17/2008
• Issued: 01/04/2011
• Est. Priority Date: 03/10/2004
• Status: Active Grant

• Current Assignee: Afton Chemical Corporation
• Original Assignee: Afton Chemical Corporation
• Inventors: Dittmeier, Robert T., Hutchison, David A., Griffin, Paul G., Loper, John T.
• Primary Examiner(s): Caldarola; Glenn
• Assistant Examiner(s): GOLOBOY, JAMES C
• Application Number:
  US12/076,303
• Publication Number:
  US 20080171678A1
• Time in Patent Office: 1,023 Days
• Field of Search: 508/232, 508/291
• US Class Current: 508/291
• CPC Class Codes: C10L 1/221 compounds of uncertain formula; reaction products where mixtures of compounds are obtained
• CPC Class Codes: C10M 133/26 containing a nitrogen-to-nitrogen double bond
• CPC Class Codes: C10M 2215/28 Amides; Imides

Abstract

A multi-functional composition for use as an additive for fuels and lubricants. The composition includes an amination product of a hydrocarbyl substituted succinic acylating agent and a mixture containing an aliphatic polyamine and an aromatic polyamine. The molar ratio of aliphatic polyamine to aromatic polyamine in the mixture ranges from about 10:0.1 to about 0.1:10. The amination product contains at least about 0.1 molar equivalent of the polyamine mixture to 1 molar equivalent of the hydrocarbyl substituted succinic acylating agent.

Claims

1. A multi-functional composition for use as an additive for fuels and lubricants comprising an amination product of a hydrocarbyl substituted succinic acylating agent and a mixture comprising an aliphatic polyamine and an aromatic polyamine, wherein the molar ratio of aliphatic polyamine to aromatic polyamine in the mixture ranges from about 10:

0.1 to about 0.1;

10, and wherein the amination product contains at least about 0.1 molar equivalent of the polyamine mixture to 1 molar equivalent of the hydrocarbyl substituted succinic acylating agent, the composition comprising a bis-succinimide-amide of the structure;

2. The composition of claim 1, wherein the aliphatic polyamine comprises a substantially linear aliphatic polyamine.

3. The composition of claim 1, wherein the hydrocarbyl substituted succinic acylating agent comprises a compound of the structure:

4. The composition of claim 3, wherein R comprises polyisobutylene (PIB).

5. The composition of claim 1, wherein a molar ratio of acylating agent to amino groups in the mixture ranges from about 1:

1 to about 6;

1.

6. The composition of claim 1, wherein the aromatic polyamine comprises a compound selected from the group consisting of N-phenyl-phenylenediamine, N-naphthyl-phenylene diamine, and substituted aromatic polyamines of the structure:

7. A lubricant composition comprising an oil of lubricating viscosity and from about 0.1 to 10 wt. %, based on the total weight of the lubricant composition, of the amination product of claim 1.

8. A vehicle having moving parts and containing a lubricant for lubricating the moving parts, the lubricant comprising an oil of lubricating viscosity and from about 0.1 to 10 wt. %, based on the total weight of the lubricant composition, of the amination product of claim 1.

10. A fuel composition comprising a hydrocarbyl fuel and from about 0.1 to about 15.0 weight percent based on the total weight of the fuel composition, of the multifunctional composition of claim 1.

9. A method for making an amination product for use as an additive for fuels and lubricants, the amination product having combined dispersant and antioxidant functionality, the method comprising the steps of:

providing a hydrocarbyl substituted succinic acylating agent to a reaction vessel;

heating the acylating agent to an elevated temperature above room temperature;

contacting an aromatic polyamine with an aliphatic polyamine to provide a polyamine mixture, wherein the molar ratio of aliphatic polyamine to aromatic polyamine in the mixture ranges from about 10;

0.1 to about 0.1;

10; and

reacting the amine mixture with the heated acylating agent under an inert atmosphere to provide the novel amination product, wherein the amination product contains at least about 0.1 molar equivalent of the polyamine mixture to 1 molar equivalent of the hydrocarbyl substituted succinic acylating agent, wherein the composition further comprises a bis-succinimide-amide of the structure;

11. A lubricant additive comprising an amination product of a hydrocarbyl substituted succinic acylating agent and a mixture comprising at least one aliphatic polyamine and at least one aromatic polyamine, wherein the molar ratio of aliphatic polyamine to aromatic polyamine in the mixture ranges from about 10:

0.1 to about 0.1;

10, and wherein the amination product contains at least about 0.1 molar equivalent of the aromatic polyamine to 1 molar equivalent of the hydrocarbyl substituted succinic acylating agent, wherein the composition further comprises a bis-succinimide-amide of the structure;

12. The lubricant additive of claim 11, wherein the aliphatic polyamine comprises a substantially linear aliphatic amine.

13. The lubricant additive of claim 11, wherein the hydrocarbyl substituted succinic acylating agent comprises a compound of the structure:

14. The lubricant additive of claim 13, wherein R comprises polyisobutylene (PIB).

15. The lubricant additive of claim 11, wherein a molar ratio of acylating agent to amino groups in the mixture ranges from about 1:

1 to about 6;

1.

16. The lubricant additive of claim 11, wherein the aromatic polyamine comprises a compound selected from the group consisting of N-phenyl-phenylenediamine, N-naphthyl-phenylene diamine, and substituted aromatic polyamines of the structure:

17. A lubricant composition comprising an oil of lubricating viscosity and from about 0.1 to 10 wt. %, based on the total weight of the lubricant composition, of the lubricant additive of claim 11.

18. An oil-soluble composition comprising a compound of the formula:

19. A multi-functional composition for use as an additive for fuels and lubricants comprising a reaction product of a polyamine mixture and a hydrocarbyl substituted succinic acylating agent, said reaction product comprising a bis-succinimide of the structure:

20. The composition of claim 19, wherein the aliphatic polyamine comprises a substantially linear aliphatic polyamine.

21. The composition of claim 19, wherein a molar ratio of bis-succinimide to amino groups in the mixture ranges from about 1:

1 to about 6;

1.

22. A multi-functional composition for use as an additive for fuels and lubricants comprising a reaction product of a polyamine mixture and hydrocarbyl-substituted succinic acylating agent, said reaction product a compound of the structure:

23. The composition of claim 22, wherein the aliphatic polyamine comprises a substantially linear aliphatic polyamine.

24. The composition of claim 22, wherein a molar ratio of the compound to the amino groups in the mixture ranges from about 1:

1 to about 6;

1.

25. An oil-soluble composition comprising a bis-succinimide-amide of the structure:

26. A lubricant additive containing the composition of claim 25.

27. A fuel additive containing the composition of claim 25.

28. A fuel containing the fuel additive of claim 27.