Pyrrolidine-2,5-dione derivatives for use in friction modification
AssigneeAfton Chemical Corporation
InventorsRoger M. Sheets, Nubar Ozbalik
Life of this patent
Estimating the term…
Abstract
The present disclosure relates to a compound of the formula I or a tribologically acceptable salt, solvate, hydrate, or proadditive thereof, wherein R1, R2 and R4 are as defined herein. Such novel pyrrolidine, or succinimide, derivatives may be useful as friction modifiers in lubricant compositions. This disclosure also relates to a method of using such friction modifier compounds in lubricating fluid formulations to lubricate machine parts, including gear, axle, engine, and transmission parts, and to lubricant compositions containing such friction modifier compounds.
Claims4
A reaction product, or a tribologically acceptable salt or solvate thereof, obtained by:
- a. reacting a C10-C36 vinylidene olefin with maleic acid, anhydride, or ester to provide a hydrocarbon-substituted succinic acid, anhydride or ester;
- and
- b. aminating the said hydrocarbon-substituted succinic acid, anhydride or ester with an effective amount of a compound containing basic nitrogen,
- wherein said C10-C36 vinylidene olefin represents the following formula:
- wherein Rc and Rd are independently a (C3-C15) alkyl, cycloalkyl or cycloalkenyl.
Dependencies are inferred from the claim text.