Pyrrolidine-2,5-dione derivatives for use in friction modification
AssigneeAfton Chemical Corporation
InventorsRoger M. SHEETS, Nubar Ozbalik
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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.
Claims25
1-12. (canceled)
A lubricant additive comprising a reaction product obtained by the process of:
- a) combining a tri-substituted internal olefin, wherein each olefin comprises from about 12 to about 36 carbon atoms, and maleic anhydride at a sufficient elevated temperature for a sufficient amount of time to provide a maleated product;
- and
- (b) aminating and neutralizing the maleated product with an effective amount of a compound containing basic nitrogen at an elevated temperature.
16-29. (canceled)
A method of making a lubricant additive, comprising:
- a) combining a tri-substituted internal olefin, wherein each olefin comprises from about 12 to about 36 carbon atoms, and maleic anhydride at a sufficient elevated temperature for a sufficient amount of time to provide a maleated product;
- and
- (b) aminating and neutralizing the maleated product with an effective amount of a compound containing basic nitrogen at an elevated temperature.
31-38. (canceled)
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.
A lubricant additive comprising a reaction product obtained by the process of:
- a. reacting a C10-C36 vinylidene olefin with maleic acid, anhydride, or ester to provide a hydrocarbon-substituted succinic acid, anhydride or ester;
- b. aminating the said hydrocarbon-substituted succinic acid, anhydride or ester with an effective amount of a compound containing basic nitrogen.
51-62. (canceled)
A method of making a lubricant additive, comprising:
- 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.
A lubricant composition comprising a mixture of:
- (a) a major amount of a lubricating oil;
- and
- (b) a Brookfield viscosity improving effective amount of a reaction product obtained by:
- i) reacting a C10-C36 vinylidene olefin with maleic acid, anhydride, or ester to provide a hydrocarbon-substituted succinic acid, anhydride or ester;
- and
- ii) aminating the said hydrocarbon-substituted succinic acid, anhydride or ester with an effective amount of a compound containing basic nitrogen;
- or a tribologically acceptable salt, solvate, hydrate, or proadditive thereof.
Dependencies are inferred from the claim text.