Compositions, concentrates, lubricant compositions, fuel compositions and methods for improving fuel economy of internal combustion engines
AssigneeThe Lubrizol Corporation
InventorReed H. Walsh
Life of this patent
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Abstract
Succinimide derivatives represented by the formula: ##STR1## wherein X is selected from the group consisting of M, ##STR2## wherein R is a hydrocarbon-based group containing from about 8 up to about 35 carbon atoms, R.sub.1 and R.sub.2 are each independently hydrogen or an alkyl group containing up to 8 carbon atoms; R.sub.4 is a hydrocarbon-based group containing up to about 28 carbon atoms; R.sub.4 and R.sub.5 are each independently hydrogen or a hydrocarbon-based group containing up to about 25 carbon atoms; and M is a metal cation.
Claims8
A substituted succinimide derivative prepared by reacting in the presence of a catalytic amount of base:
- (A) one or more substituted succinimides represented by the formula:
- ##STR20## wherein R is a hydrocarbon-based group containing from about 8 up to about 35 carbon atoms with
- (B) one or more carbonyl compounds represented by the formula:
- ##STR21## wherein R.sub.1 and R.sub.2 are each independently hydrogen or an alkyl radical containing up to 8 carbon atoms.
Dependencies are inferred from the claim text.