Fuel additive compositions containing polyisobutenyl succinimides
AssigneeChevron Research and Technology Company
InventorRichard E. Cherpeck
Life of this patent
Estimating the term…
Abstract
A fuel additive composition comprising (a) a polyisobutenyl succinimide derived from ethylenediamine or diethylenetriamine, wherein the polyisobutenyl group has an average molecular weight of about 1200 to 1500 and (b) a nonvolatile paraffinic or naphthenic carrier oil, or a mixture thereof.
Claims18
A fuel additive consisting essentially of comprising:
- (a) a polyisobutenyl succinimide of the formula ##STR3## wherein R is a polyisobutenyl group having a number average molecular weight in the range of about 1200 to 1500, and x is 1 or 2;
- and
- (b) a nonvolatile paraffinic or naphthenic carrier oil, or a mixture thereof, containing no more than about 10% of aromatic material.
A fuel composition consisting essentially of a major amount of hydrocarbons boiling in the gasoline or diesel range and an effective detergent amount of an additive composition comprising:
- (a) a polyisobutenyl succinimide having the formula ##STR4## wherein R is a polyisobutenyl group having a number average molecular weight in the range of about 1200 to 1500, and x is 1 or 2;
- and
- (b) a nonvolatile paraffinic or naphthenic carrier oil, or a mixture thereof, containing no more than about 10% of aromatic material.
A fuel concentrate consisting essentially of an inert stable oleophilic organic solvent boiling in the range of from about 150.degree. F. to 400.degree. F. and from about 10 to 50 weight percent of an additive composition comprising:
- (a) a polyisobutenyl succinimide having the formula ##STR5## wherein R is a polyisobutenyl group having a number average molecular weight in the range of about 1200 to 1500, and x is 1 or 2;
- and
- (b) a nonvolatile paraffinic or naphthenic carrier oil, or a mixture thereof, containing no more than about 10% of aromatic material.
Dependencies are inferred from the claim text.