Polymerized fatty acid amine derivatives useful as friction and wear-reducing additives

• US 4,250,045 A
• Filed: 06/22/1979
• Issued: 02/10/1981
• Est. Priority Date: 06/22/1979
• Status: Expired due to Term

• Current Assignee: Exxon Research and Engineering Company (Exxon Mobil Corporation)
• Original Assignee: Exxon Research and Engineering Company (Exxon Mobil Corporation)
• Inventors: Coupland, Keith, Smith, Clinton R.
• Primary Examiner(s): Metz, Andrew
• Application Number:
  US06/051,040
• Time in Patent Office: 599 Days
• Field of Search: 252/32.7 E, 252/50
• US Class Current: 508/375
• CPC Class Codes: C07C 255/00 Carboxylic acid nitriles cyanogen or compounds thereof C01C3/00
• CPC Class Codes: C10M 133/06 having amino groups bound to acyclic or cycloaliphatic carbon atoms
• CPC Class Codes: C10M 133/24 Nitriles
• CPC Class Codes: C10M 2215/04 having amino groups bound to acyclic or cycloaliphatic carbon atoms
• CPC Class Codes: C10M 2215/16 Nitriles
• CPC Class Codes: C10M 2215/26 Amines
• CPC Class Codes: C10M 2217/046 Polyamines, i.e. macromoleculars obtained by condensation of more than eleven amine monomers
• CPC Class Codes: C10M 2217/06 Macromolecular compounds obtained by functionalisation op polymers with a nitrogen containing compound
• CPC Class Codes: C10M 2219/044 Sulfonic acids, Derivatives thereof, e.g. neutral salts
• CPC Class Codes: C10M 2223/045 Metal containing thio derivatives
• CPC Class Codes: C10N 2010/04 Groups 2 or 12
• CPC Class Codes: C10N 2040/02 Bearings
• CPC Class Codes: C10N 2040/08 Hydraulic fluids, e.g. brake-fluids
• CPC Class Codes: C10N 2040/25 Internal-combustion engines
• CPC Class Codes: C10N 2040/251 Alcohol fueled engines
• CPC Class Codes: C10N 2040/252 Diesel engines
• CPC Class Codes: C10N 2040/253 Small diesel engines
• CPC Class Codes: C10N 2040/255 Gasoline engines
• CPC Class Codes: C10N 2040/26 Two-strokes or two-cycle engines
• CPC Class Codes: C10N 2040/28 Rotary engines
• CPC Class Codes: C10N 2050/10 : Semi-solids; greasy

Abstract

A hydrocarbon composition having a major portion of a hydrocarbon preferably a lubricating oil such as mineral oil and at least a friction-reducing amount usually 0.01 to 10 weight percent of an amine or amine derivative of a hydrocarbon-soluble polymerized fatty acid e.g. a dimeramine derived from a dicarboxylic acid containing at least 12 carbon atoms such as 9(10)-carboxy stearic acid has improved antifriction and fuel economy properties.

Claims

1. A liquid hydrocarbon lubricating oil composition comprising a major proportion of a liquid hydrocarbon lubricating oil and from about 0.01 to 10 wt. % of a friction-reducing additive, said additive being a hydrocarbon soluble diprimary diamine of a dimerized C₁₉ -C₆₀ fatty acid or derivative thereof, said derivative being a cyanoethylated or amine propylamine derivative.

2. A composition according to claim 1 wherein said hydrocarbon lubricating oil is mineral oil and contains further at least a sludge-dispersing amount of an oil-soluble dispersant and at least a wear-reducing amount of an antiwear additive.

3. A composition according to claim 1 wherein said additive is a dimeramine of a dimerized natural fatty acid and said composition further comprising metal dialkyl dithiophosphate antiwear additive.

4. A composition according to claim 3 wherein said diprimary dimeramine is di-N-(2-cyanoethyl) dimeramine.

5. A composition according to claim 3 wherein said diprimary dimeramine is di-N-aminopropyl diprimary amine.

6. A composition according to claim 3 wherein said natural fatty acids are derived from tall-oil, soybean oil or linseed oil.