Process of preparing molybdenum complexes, the complexes so-produced and lubricants containing same

• US 4,272,387 A
• Filed: 06/28/1979
• Issued: 06/09/1981
• Est. Priority Date: 06/28/1979
• Status: Expired due to Term

• Current Assignee: Chevron Research Company (Chevron Corp.)
• Original Assignee: Chevron Research Company (Chevron Corp.)
• Inventors: King, John M., de Vries, Louis
• Primary Examiner(s): Metz, Andrew
• Application Number:
  US06/052,699
• Time in Patent Office: 712 Days
• Field of Search: 252/34.7, 252/46.4, 252/49.7, 252/51, 252/25, 252/400 R, 252/400 A, 260/125, 260/128, 260/137
• US Class Current: 508/226
• CPC Class Codes: C07F 11/005 compounds without a metal-carbon linkage
• CPC Class Codes: C10M 159/18 Complexes with metals
• CPC Class Codes: C10M 2217/00 Organic macromolecular compounds containing nitrogen as ingredients in lubricant compositions
• CPC Class Codes: C10M 2217/02 Macromolecular compounds obtained from nitrogen containing monomers by reactions only involving carbon-to-carbon unsaturated bonds
• CPC Class Codes: C10M 2217/04 Macromolecular compounds from nitrogen-containing monomers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
• CPC Class Codes: C10M 2219/02 Sulfur-containing compounds obtained by sulfurisation with sulfur or sulfur-containing compounds
• CPC Class Codes: C10M 2219/046 Overbasedsulfonic acid salts
• CPC Class Codes: C10M 2227/06 Organic compounds derived from inorganic acids or metal salts
• CPC Class Codes: C10N 2010/12 Groups 6 or 16
• CPC Class Codes: C10N 2070/02 Concentrating of additives

Abstract

Antioxidant additives for lubricating oil are prepared by combining an acidic molybdenum compound, a basic nitrogen compound complex and a sulfur source to form a sulfur- and molybdenum-containing composition.

Claims

1. A process for preparing a sulfurized molybdenum-containing composition which comprises (1) reacting an acidic molybdenum compound and a basic nitrogen compound selected from the group consisting of a succinimide, carboxylic acid amide, Mannich base, phosphonamide, thiophosphonamide, phosphoramide, dispersant viscosity index improvers, or mixtures thereof, to form a molybdenum complex wherein from 0.01 to 2 atoms of molybdenum are present per basic nitrogen atom;

and (2) reacting said complex with a sulfur containing compound, in an amount to provide 0.1 to 4.0 atoms of sulfur per atom of molybdenum, to form a sulfur- and molybdenum-containing composition.

2. The process of claim 1 wherein the sulfur source is sulfur, hydrogen sulfide, phosphorus pentasulfide, R₂ S_x where R is hydrocarbyl, and x is at least 2, inorganic sulfides, inorganic polysulfides, thioacetamide, thiourea, mercaptan of the formula RSH where R is hydrocarbyl, or a sulfur-containing antioxidant.

3. The process of claim 2 wherein the sulfur source is sulfur, hydrogen sulfide, phosphorus pentasulfide, R₂ S_x where R is C_1-40 hydrocarbyl, and x is at least 3, an inorganic sulfide, or inorganic polysulfide, thioacetamide, thiourea or RSH where R is C_1-40 alkyl, and the acidic molybdenum compound is molybdic acid, ammonium molybdate, or an alkali metal molybdate.

4. The process of claim 3 wherein said sulfur source is sulfur, hydrogen sulfide, RSH where R is C_1-10 alkyl, phosphorus pentasulfide, or (NH₄)₂ S_x'"'"', where x'"'"' is at least 1, said acidic molybdenum compound is molybdic acid or ammonium molybdate, and said basic nitrogen compound is a succinimide, carboxylic acid amide, or Mannich base.

5. The process of claim 4 wherein said basic nitrogen compound is a C_24-350 hydrocarbyl suffinimide, carboxylic acid amide, or a Mannich base prepared from a C_9-200 alkylphenol, formaldehyde, and an amine.

6. The process of claim 5 wherein said basic nitrogen compound is a polyisobutenyl succinimide prepared from polyisobutenyl succinic anhydride and tetraethylene pentaamine or triethylene tetraamine.

7. The process of claim 5 wherein said basic nitrogen compound is a carboxylic acid amide prepared from one or more carboxylic acids of the formula R² COOH, or a derivative thereof which upon reaction with an amine yields a carboxylic acid amide, wherein R² is C_12-350 alkyl or C_12-350 alkenyl and a hydrocarbyl polyamine.

8. The process of claim 7 wherein R² is C_12-20 alkyl or C_12-20 alkenyl and the hydrocarbyl polyamine is tetraethylene pentaamine or triethylene tetraamine.

9. The process of claim 6 wherein said basic nitrogen compound is a Mannich base prepared from dodecylphenol, formaldehyde, and methylamine.

10. The process of claim 6 wherein said basic nitrogen compound is a Mannich base prepared from C_80-100 alkylphenol, formaldehyde and triethylene tetraamine, tetraethylene pentaamine, or mixtures thereof.

11. The product prepared by the process of claim 1, 2, 3, 4, 5, 6, 7, 8, 9, or 10.

12. A lubricating oil composition comprising an oil of lubricating viscosity and from 0.05 to 15% by weight of the product of claim 11.

13. A concentrate comprising an oil of lubricating viscosity and from 0.25 to 90% by weight of the product of claim 11.