Detergent and corrosion inhibitor and motor fuel composition containing same
AssigneeTexaco Inc.
InventorsBenjamin J. Kaufman, Harry Chafetz
Life of this patent
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Abstract
As a detergent and corrosion inhibiting fuel additive, the product resulting from the condensation reaction of a C.sub.9 to C.sub.30 alkenylsuccinic anhydride in the presence of a base to form an intermediate spirodilactone followed by the reaction of the intermediate spirodilactone with diethylenetriamine and a fuel composition containing same.
Claims12
A motor fuel composition comprising a base mixture of hydrocarbons boiling in the gasoline boiling range and an effective amount of a detergent and corrosion inhibiting reaction product which is obtained by condensing in the presence of a basic catalyst at temperatures ranging from about 180.degree. C. to about 270.degree. C. an alkenyl succinic anhydride of the formula:
- ##STR4## wherein R' is an alkenyl radical having from about 9 to about 30 carbon atoms, to form a spirodilactone intermediate followed by the reaction of the spirodilactone intermediate with diethylenetriamine at from about 80.degree. C. to about 140.degree. C. in which the ratio of diethylenetriamine to spirodilactone intermediate ranges from about 12:1 to about 2:1.
A motor fuel composition comprising a base of about 90% of a mixture of hydrocarbons boiling in the gasoline boiling range, about 10% ethyl alcohol, and an effective amount of a detergent and corrosion inhibiting reaction product which is obtained by condensing in the presence of a basic catalyst at temperatures ranging from about 180.degree. to about 270.degree. C. an alkenylsuccinic anhydride of the formula:
- ##STR5## wherein R' is an alkenyl radical having from about 9 to about 30 carbon atoms, to form an intermediate spirodilactone followed by reacting the intermediate spirodilactone with diethylenetriamine at from about 80.degree. C. to about 140.degree. C. where the ratio of spirodilactone to diethylenetriamine ranges from about 12:1 to about 2:1.
Dependencies are inferred from the claim text.