Title: Lithium salts of hydrocarbon substituted amic acid as low ash rust inhibitors

Abstract: The lithium salt of a reaction product of a hydrocarbon-substituted amic acid in which the hydrocarbon substituent contains about 12 to 20 carbon atoms and an amine or ammonia, is effective as rust and corrosion inhibitors in lubricating oil compositions.

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Inventors: Brewster, Philip W. (Wyoming, CA, US)

Application Number: 548615
Filing Date: 1975-02-10
Publication_date: 1977-03-15
Assignee: Exxon Research & Engineering Co. (Linden, NJ)
Primary Class(es): 508/508
Other Classes:
US Patent Ref:

2640812	Jun, 1953	Bryant	252/33.
3042614	Jul, 1962	Halter et al.	252/33.
3121057	Feb, 1964	Gee et al.	252/33.
3163603	Dec, 1964	LeSuer	252/33.
3180830	Apr, 1965	Siegart et al.	252/33.
3192160	Jun, 1965	Gee et al.	252/33.
3247110	Apr, 1966	Gee et al.	252/33.
3347791	Oct, 1967	Thompson et al.	252/33.
3634240	Jan, 1972	O'Halloran	252/33.

Other Refs:
Primary Examiner: Gantz, Delbert E.
Assistant Examiner: Metz, Andrew H.
Attorney: Johmann; Frank T.