Oil soluble molybdenum compositions

• US 6,528,463 B1
• Filed: 03/23/2000
• Issued: 03/04/2003
• Est. Priority Date: 03/23/2000
• Status: Expired due to Term

• Current Assignee: Afton Chemical Corporation
• Original Assignee: Ethyl Corporation (Newmarket Corporation)
• Inventors: Gatto, Vincent James, Mike, Carl A., Loper, John T.
• Primary Examiner(s): McAvoy, Ellen M.
• Application Number:
  US09/533,229
• Time in Patent Office: 1,076 Days
• Field of Search: 508/367, 554/38, 554/71, 556/57
• US Class Current: 508/367
• CPC Class Codes: C07F 11/005 compounds without a metal-carbon linkage
• CPC Class Codes: C10M 159/18 Complexes with metals

Abstract

Organic molybdenum complexes comprising the reaction products of a long-chain mono carboxylic acid, a mono-alkylated alkylene diamine, glycerides, and a molybdenum source and their use as multifunctional additives for lubricating compositions.

Claims

1. An organic molybdenum complex comprising the reaction product of:

(i) at least one long-chain monocarboxylic acid;

(ii) at least one mono-alkylated alkylene diamine;

(iii) glyceride(s); and

(iv) an oxygen-containing molybdenum compound;

wherein said complex is substantially free of carbon disulfide.

2. The molybdenum complex of claim 1 wherein the long-chain monocarboxylic acid comprises a monocarboxylic acid containing at least 8 carbon atoms.

3. The molybdenum complex of claim 2 wherein the long-chain monocarboxylic acid comprises a monocarboxylic acid containing at least 12 carbon atoms.

4. The molybdenum complex of claim 2 wherein the long-chain monocarboxylic acid comprises a mixture of monocarboxylic acids.

5. The molybdenum complex of claim 3 wherein the long-chain monocarboxylic acid comprises oleic acid.

6. The molybdenum complex of claim 1 wherein the glyceride(s) comprises a mixture of mono-, di and triglycerides.

7. The molybdenum complex of claim 1 wherein the glyceride(s) comprises the reaction products of glycerol and oleic acid.

8. The molybdenum complex of claim 1 wherein from 30 to 70% of the available sites on the glycerides contain hydroxyl groups prior to forming said reaction product.

9. The molybdenum complex of claim 1 wherein the mono-alkylated alkylene diamine comprises a mono-alkylated alkylene diamine derived from a fatty acid.

10. The molybdenum complex of claim 9 wherein the mono-alkylated alkylene diamine derived from a fatty acid comprises at least one member selected from the group consisting of N-coco alkyl-1,3-propanediamine, N-tall oil alkyl-1,3-propanediamine and N-oleyl-1,3-propanediamine.

11. The molybdenum complex of claim 1 wherein the molybdenum source comprises at least one member selected from the group consisting of ammonium molybdate, sodium molybdate and molybdenum oxides.

12. The molybdenum complex of claim 1 obtained by reacting (i) and (ii) to form a reaction product prior to the addition of components (iii) and (iv).

13. The molybdenum complex of claim 12 wherein the reaction product comprises at least one member selected from the group consisting of aminoamides, ammonium carboxylate and mixtures thereof.

14. The molybdenum complex of claim 1 obtained by combining (i), (ii), (iii) and (iv) prior to heating.

15. The molybdenum complex of claim 1 wherein the reaction product has a ratio (wt/wt) of nitrogen to molybdenum (N/Mo) of ≦

0.6.

17. The molybdenum complex of claim 15 wherein the reaction product has a N/Mo of ≦

0.4.

19. The molybdenum complex of claim 17 wherein the reaction product has a N/Mo of ≦

0.3.

21. The molybdenum complex of claim 1 wherein the reaction product is substantially free of reactive sulfur.

23. A lubricating oil composition comprising a major amount of an oil of lubricating viscosity and the molybdenum complex of claim 1.

24. The lubricating oil composition of claim 23 wherein the molybdenum complex is present in an amount sufficient to provide at least about 50 ppm of molybdenum to the finished lubricant.

25. A method of improving the oxidation stability of a lubricating oil comprising adding to said lubricating oil an oxidation stability improving amount of the molybdenum complex of claim 1, wherein said oxidation stability improving amount of said molybdenum complex is sufficient to improve the oxidative stability of the lubricating oil, as compared to the same lubricating oil except that it is devoid of said molybdenum complex.

26. The method of claim 25 wherein the molybdenum complex is present in the lubricating oil in an amount sufficient to provide at least 50 ppm of molybdenum to the finished lubricating oil.

27. A method of improving the fuel economy of an internal combustion engine comprising using as the crankcase lubricating oil for said internal combustion engine the lubricating oil of claim 23, wherein said molybdenum complex is present in an amount effective to improve the fuel economy of the internal combustion engine using said crankcase lubricating oil, as compared to said engine operated in the same manner and using the same crankcase lubricating oil except that the oil is devoid of said molybdenum complex.

28. The method of claim 27 wherein the molybdenum complex is present in said crankcase lubricating oil in an amount sufficient to provide at least 200 ppm of molybdenum to the finished lubricating oil.

29. A method of reducing deposits in an internal combustion engine comprising using as the crankcase lubricating oil for said internal combustion engine the lubricating oil of claim 23, wherein said molybdenum complex is present in an amount sufficient to reduce the weight of deposits in an internal combustion engine operated using said crankcase lubricating oil, as compared to the weight of deposits in said engine operated in the same manner and using the same crankcase lubricating oil except that the oil is devoid of said molybdenum complex.

30. The method of claim 29 wherein the molybdenum complex is present in said crankcase lubricating oil in an amount sufficient to provide at least 50 ppm of molybdenum to the finished lubricating oil.

31. A method of reducing wear in an internal combustion engine comprising using as the crankcase lubricating oil for said internal combustion engine the lubricating oil of claim 23, wherein said molybdenum complex is present in an amount sufficient to reduce the wear in an internal combustion engine operated using said crankcase lubricating oil, as compared to the wear in said engine operated in the same manner and using the same crankcase lubricating oil except that the oil is devoid of said molybdenum complex.

32. The method of claim 31 wherein the molybdenum complex is present in said crankcase lubricating oil in an amount sufficient to provide at least 50 ppm of molybdenum to the finished lubricating oil.

16. An organic molybdenum complex comprising the reaction product of:

(i) at least one long-chain monocarboxylic acid;

(ii) at least mono-alkylated alkylene diamine;

(iii) glyceride(s); and

(iv) a molybdenum source,

wherein the reaction product is substantially free of reactive sulfur.

18. A molybdenum complex of claim 16 wherein said reaction product has a ratio (wt/wt) of nitrogen to molybdenum (N/Mo) of ≦

0.4.

20. A molybdenum complex of claim 18 wherein said reaction product has a N/Mo of ≦

0.3.

22. The molybdenum complex of claim 16 wherein said reaction product contains less than 0.05 weight percent of sulfur.

33. A process for preparing an organic molybdenum complex, said process comprises reacting:

(i) at least one long-chain monocarboxylic acid;

(ii) at least one mono-alkylated alkylene diamine;

(iii) glyceride(s); and

(iv) an oxygen-containing molybdenum compound;

wherein said complex is substantially free of carbon disulfide.

34. The process of claim 33 wherein the long-chain monocarboxylic acid comprises a monocarboxylic acid containing at least 8 carbon atoms.

35. The process of claim 34 wherein the long-chain monocarboxylic acid comprises a monocarboxylic acid containing at least 12 carbon atoms.

36. The process of claim 33 wherein the long-chain monocarboxylic acid comprises a mixture of monocarboxylic acids.

37. The process of claim 33 wherein the mono-alkylated alkylene diamine (component ii) is present in an amount of from 0.8 to 1.2 moles per mole of acid (component i).

38. The process of claim 33 wherein the glyceride(s) comprises a mixture of mono-, di and triglycerides.

39. The process of claim 33 wherein the glyceride(s) comprises the reaction products of glycerol and oleic acid.

40. The process of claim 33 wherein from 30 to 70% of the available sites on the glycerides contain hydroxyl groups prior to forming the molybdenum complex.

41. The process of claim 33 wherein the glyceride(s) (component iii) are present in an amount of from 0.25 to 0.75 mole per mole of acid (component i).

42. The process of claim 33 wherein the molybdenum source comprises at least one member selected from the group consisting of ammonium molybdate, sodium molybdate and molybdenum oxides.

43. The process of claim 33 wherein the molybdenum source (component iv) is present in an amount of from 0.5 to 1.5 moles per mole of acid (component i).

44. The process of claim 33 wherein components (i) and (ii) are reacted to form a reaction product prior to the addition of components (iii) and (iv).

45. The process of claim 44 wherein the reaction product comprises at least one member selected from the group consisting of aminoamides, ammonium carboxylate and mixtures thereof.

46. The process of claim 44 wherein water is added to the reaction mixture after the reaction of (i) and (ii).

47. The process of claim 46 wherein from 1 to 100 moles of water per mole of acid (component i) are added.

48. The process of claim 33 wherein components (i), (ii), (iii) and (iv) are combined prior to heating.

49. The process of claim 48 wherein from 1 to 100 moles of water per mole of acid (component i) are added to the reaction mixture of components (i), (ii), (iii) and (iv).

50. A process for preparing an organic molybdenum complex, said process comprises reacting:

(i) at least one long-chain monocarboxylic acid;

(ii) at least one mono-alkylated alkylene diamine;

(iii) glyceride(s); and

(iv) a molybdenum source;

wherein said reaction product is substantially free of reactive sulfur.