MULTIFUNCTIONAL LUBRICATING OIL ADDITIVE

• US 3,865,740 A
• Filed: 02/14/1973
• Issued: 02/11/1975
• Est. Priority Date: 05/22/1972
• Status: Expired due to Term

• Current Assignee: Alfred Goldschmidt
• Original Assignee: Alfred Goldschmidt
• Inventors: Goldschmidt, Alfred
• Primary Examiner(s): Garvin, Patrick P.
• Assistant Examiner(s): Metz, Andrew H.
• Application Number:
  US05/332,864
• Time in Patent Office: 727 Days
• Field of Search: 252/46.7 260/326.5F
• US Class Current: 508/289
• CPC Class Codes: C07F 9/1651 with hydroxyalkyl compounds with further substituents on alkyl
• CPC Class Codes: C10M 137/105 not containing metal
• CPC Class Codes: C10M 2205/00 Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions
• CPC Class Codes: C10M 2205/02 containing acyclic monomers
• CPC Class Codes: C10M 2205/024 Propene
• CPC Class Codes: C10M 2205/026 Butene
• CPC Class Codes: C10M 2205/028 containing aliphatic monomers having more than four carbon atoms
• CPC Class Codes: C10M 2207/04 Ethers; Acetals; Ortho-esters; Ortho-carbonates
• CPC Class Codes: C10M 2207/282 of (cyclo)aliphatic oolycarboxylic acids
• CPC Class Codes: C10M 2207/283 of polyhydroxy compounds
• CPC Class Codes: C10M 2207/34 Esters having a hydrocarbon substituent of thirty or more carbon atoms, e.g. substituted succinic acid derivatives
• CPC Class Codes: C10M 2209/103 Polyethers, i.e. containing di- or higher polyoxyalkylene groups
• CPC Class Codes: C10M 2209/104 of alkylene oxides containing two carbon atoms only
• CPC Class Codes: C10M 2209/105 of alkylene oxides containing three carbon atoms only
• CPC Class Codes: C10M 2209/108 etherified
• CPC Class Codes: C10M 2223/00 Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions
• CPC Class Codes: C10M 2223/047 Thioderivatives not containing metallic elements
• CPC Class Codes: C10M 2223/063 Ammonium or amine salts
• CPC Class Codes: C10M 2223/08 having phosphorus-to-nitrogen bonds
• CPC Class Codes: C10M 2229/02 Unspecified siloxanes; Silicones
• CPC Class Codes: C10M 2229/05 : containing atoms other than silicon, hydrogen, oxygen or carbon
• CPC Class Codes: C10N 2050/10 : Semi-solids; greasy

Abstract

The N-substituted, S-aminomethyl dithiophosphates, wherein said substituent is selected from the group consisting of hydrocarbyl, hydrocarbyl-substituted amines, and hydrocarbyl-substituted succinimides, are found to function as extreme pressure agents, oxidation inhibitors and ashless dispersants in lubricating oils.

Claims

1. A lubricating composition comprising an oil of lubricating viscosity and from 0.1 to 10 percent by weight of an N-substituted, S-aminomethyl dithiophosphate, wherein said substituent is a hydrocarbyl-subtituted succinimide of a hydrocarbyl polyamine, and wherein said hydrocarbyl substituent contains at least 40 carbon atoms.

2. A lubricating oil composition according to claim 1, wherein said hydrocarbyl-substituted succinimide is an imidE of alkylene polyamine.

3. A lubricating oil composition according to claim 2, wherein said hydrocarbyl group is a polypropenyl or polybutenyl substituent containing from 40 to about 300 carbon atoms, and said alkylene polyamine is ethylene or propylene polyamine.

4. A lubricating oil composition according to claim 3 wherein said hydrocarbyl substituent is a polyisobutenyl group containing from 40 to about 100 carbon atoms.

5. A LUBRICATING OIL COMPOSITION CONTAINING AN OIL OF LUBRICATING VISCOSITY AND FROM 0.1 TO 10 PERCENT BY WEIGHT OF A LUBRICATING OIL ADDITIVE OF THE GENERAL FORMULA